WO2025218182A1 - Display device, grayscale control method and apparatus, and storage medium - Google Patents

Abstract

Embodiments of the present application relate to the technical field of images, and particularly to a display device, a grayscale control method and apparatus, and a storage medium. The display device comprises a display panel and a processor; the processor is configured to determine, on the basis of the position of a gaze point of a target user in the display panel, a plurality of gaze areas corresponding to the display panel; the processor is further configured to control, for each gaze area among the plurality of gaze areas, a grayscale value of subpixels in the gaze area on the basis of a control strategy corresponding to the gaze area, wherein at least two gaze areas among the plurality of gaze areas correspond to different control strategies.

Description

Display device, grayscale control method, device and storage medium

This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on April 16, 2024, with application number PCT/CN2024/088125 and application name “Electronic device, grayscale compensation method, device and storage medium”, the entire contents of which are incorporated by reference into this application.

Technical Field

The present disclosure relates to the field of image technology, and in particular to a display device, a grayscale control method, an apparatus, and a storage medium.

Background Art

To reduce crosstalk, glasses-free 3D technology can optimize the design of prisms and other optical splitting components to improve their splitting effect. Traditional image arrangement algorithms in glasses-free 3D technology generally perform black or white interpolation on sub-pixels in transition areas to reduce crosstalk. However, this single black or white interpolation method currently used on sub-pixels can lead to image distortion and increased crosstalk. Therefore, reducing crosstalk has become a key technical issue that needs to be addressed in the field of glasses-free 3D displays.

Summary of the Invention

On the one hand, a display device, a grayscale control method, an apparatus and a storage medium are provided, which can effectively reduce the crosstalk rate and improve the naked-eye 3D viewing effect.

The display device includes: a display panel and a processor; the processor is configured to: determine multiple gaze areas corresponding to the display panel based on the position of the target user's gaze point within the display panel; the processor is further configured to: control the grayscale value of the sub-pixels in each gaze area of the multiple gaze areas based on the control strategy corresponding to the gaze area.

At least two of the multiple gaze areas correspond to different control strategies.

In some embodiments, the display panel corresponds to multiple gaze points, and each gaze point corresponds to one area, and the area corresponding to each gaze point includes a transition area and a non-transition area.

Among them, multiple gaze points are viewpoints from which the target user gazes at the display panel from different angles; the transition area is the area between the critical lines of the areas corresponding to any two gaze points, and the non-transition area is the area other than the transition area.

In some embodiments, the processor is further configured to: determine a target gaze point area based on the gaze point position; the target gaze point area is an area among multiple gaze point areas that affects the grayscale value of the sub-pixel; the target gaze point area includes a first gaze point area and a second gaze point area, and one of the first gaze point area and the second gaze point area is an area corresponding to the gaze point position, and the other is an adjacent area to the area corresponding to the gaze point position.

In some embodiments, the multiple gaze areas include a central area, which is the area at the center of the gaze point position; the processor is specifically configured to: for the multiple sub-pixels in the central area, reduce the grayscale value of the sub-pixels in the transition area among the multiple sub-pixels, and/or increase the grayscale value of the sub-pixels in the non-transition area among the multiple sub-pixels.

In some embodiments, the processor is specifically configured to: determine the grayscale coefficient of the first subpixel based on the position of the center point of the first subpixel in the target gaze point area and the width of the first area, and reduce the grayscale value of the first subpixel based on the grayscale coefficient of the first subpixel and the first image grayscale value of the first subpixel in the target gaze point area.

Among them, the first sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the central area; the first area is a partial area in the target gaze point area; the first image grayscale value is used to represent the grayscale value of the first sub-pixel in the first gaze point area, or to represent the grayscale value of the first sub-pixel in the second gaze point area.

In some embodiments, the processor is specifically configured to: perform black processing on the grayscale value of the first sub-pixel to reduce the grayscale value of the first sub-pixel.

The first sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the central area.

In some embodiments, the processor is further configured to increase the grayscale value of the second subpixel based on the position of the center point of the second subpixel in the target gaze point area and the width of the target gaze point area.

The second sub-pixel is any sub-pixel in the non-transition area among the multiple sub-pixels in the central area.

In some embodiments, the processor is specifically configured to: determine the grayscale coefficient of the second sub-pixel based on the position of the center point of the second sub-pixel in the target gaze point area and the width of the target gaze point area, and determine the grayscale value of the second sub-pixel based on the grayscale coefficient of the second sub-pixel and the image grayscale value of the second sub-pixel in the target gaze point area, and then use the minimum value between the grayscale value of the second sub-pixel and the grayscale threshold as the increased grayscale value of the second sub-pixel.

The second image grayscale value is used to represent the grayscale value of the second sub-pixel in the first gaze point area, or is used to represent the grayscale value of the second sub-pixel in the second gaze point area.

In some embodiments, the multiple gaze areas include an edge area, which is an area adjacent to the central area; the central area is an area at the center of the gaze point position; the processor is specifically configured to: for multiple sub-pixels in the edge area, reduce the grayscale value of the sub-pixels in the transition area among the multiple sub-pixels.

Based on the area ratio of the third sub-pixel and the third image grayscale value of the third sub-pixel, the grayscale value of the third sub-pixel is reduced; the third image grayscale value is used to represent the image grayscale value of the third sub-pixel in the first gaze point area, or to represent the image grayscale value of the third sub-pixel in the second gaze point area.

In some embodiments, the processor is further configured to determine an area proportion of the third sub-pixel based on a position of a center point of the third sub-pixel in the target gaze point area and a width of the third sub-pixel.

Among them, the third sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the edge area; the area proportion of the third sub-pixel is used to characterize the proportion of the third sub-pixel in the first gaze point area, or to characterize the proportion of the third sub-pixel in the second gaze point area.

In some embodiments, the processor is specifically configured to:

Based on the proportion of the third sub-pixel in the first gazing point area, the proportion of the third sub-pixel in the second gazing point area, and the grayscale value of the third sub-pixel in the first gazing point area, reducing the grayscale value of the third sub-pixel; or

Based on the proportion of the third sub-pixel in the first gaze point area, the proportion of the third sub-pixel in the second gaze point area, and the grayscale value of the third sub-pixel in the second gaze point area, the grayscale value of the third sub-pixel is reduced.

In some embodiments, the processor is specifically configured to:

Based on the first grayscale value of the third subpixel in the first gaze point area and the second grayscale value of the third subpixel in the second gaze point area, the grayscale value of the third subpixel is reduced.

Among them, the first grayscale value is determined based on the proportion of the third sub-pixel in the first gaze point area and the image grayscale value of the third sub-pixel in the first gaze point area; the second grayscale value is determined based on the proportion of the third sub-pixel in the second gaze point area and the image grayscale value of the third sub-pixel in the second gaze point area.

In some embodiments, the processor is further configured to: perform black processing on the grayscale value of the sub-pixel to reduce the grayscale value of the sub-pixel.

The sub-pixel is the first sub-pixel or the third sub-pixel, the first sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the central area; the third sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the edge area.

In some embodiments, the processor is further configured to: increase the coverage of the transition area, and/or decrease the coverage of the non-transition area.

In some embodiments, the position of the center point of the sub-pixel in the target gaze point area can be determined by: determining the target gaze point area based on the gaze point position; determining the position of the center point of the target sub-pixel in the target gaze point area based on the position of the central sub-pixel in the row where the target sub-pixel is located.

Among them, the target sub-pixel is any one of the first sub-pixel, the second sub-pixel, and the third sub-pixel; the first sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the central area; the second sub-pixel is any sub-pixel in the non-transition area among the multiple sub-pixels in the central area; and the third sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the edge area.

In some embodiments, the processor is specifically configured to: obtain the width of the target gaze point area, and based on the width of the target gaze point area and the position of the central sub-pixel, determine the width of the second area of the row where the target sub-pixel is located, and then determine the position of the center point of the target sub-pixel in the target gaze point area based on the width of the second area.

The second area is an incomplete area on the left side of the row where the target sub-pixel is located;

In some embodiments, the processor is further configured to: obtain the offset between the central sub-pixel of the row where the target sub-pixel is located and the center point of the display panel, and determine the position of the central sub-pixel of the row where the target sub-pixel is located based on the offset and the pixel width.

In some embodiments, the multiple gaze areas include a peripheral area, which is the area excluding the central area and the edge area; the central area is the area at the center of the gaze point position, and the edge area is the area adjacent to the central area; the processor is specifically configured to: not adjust and control the multiple sub-pixels in the peripheral area.

In some embodiments, the display device further includes a prism disposed above the display panel; the processor is further configured to determine a placement position of the prism based on device parameters of the display device.

In some embodiments, the device parameters of the display device include at least two of the following: the horizontal aperture of the prism; the arch height of the prism; the distance between the prism and the display panel; the number of sub-pixels of the display panel covered by the prism; and the width of the sub-pixels of the display panel.

On the other hand, a grayscale control method is provided, which is applied to a display device, the display device including a display panel and a processor; the method includes: based on the position of the target user's gaze point within the display panel, determining multiple gaze areas corresponding to the display panel, and for each gaze area in the multiple gaze areas, controlling the grayscale value of the sub-pixel in the gaze area based on the control strategy corresponding to the gaze area.

At least two of the multiple gaze areas correspond to different control strategies.

In some embodiments, the display panel corresponds to multiple gaze points, and each gaze point corresponds to one area, and the area corresponding to each gaze point includes a transition area and a non-transition area.

Among them, multiple gaze points are viewpoints from which the target user gazes at the display panel from different angles; the transition area is the area between the critical lines of the areas corresponding to any two gaze points, and the non-transition area is the area other than the transition area.

In some embodiments, a target gaze point area is determined based on the gaze point position; the target gaze point area is an area among multiple gaze point areas that affects the grayscale value of the sub-pixel; the target gaze point area includes a first gaze point area and a second gaze point area, one of the first gaze point area and the second gaze point area is an area corresponding to the gaze point position, and the other is an adjacent area to the area corresponding to the gaze point position.

In some embodiments, the multiple gaze areas include a central area, which is the area at the center of the gaze point position; for each of the multiple gaze areas, the grayscale values of the sub-pixels in the gaze area are controlled based on the control strategy corresponding to the gaze area, including: for the multiple sub-pixels in the central area, reducing the grayscale values of the sub-pixels in the transition area among the multiple sub-pixels, and/or increasing the grayscale values of the sub-pixels in the non-transition area among the multiple sub-pixels.

In some embodiments, for multiple sub-pixels in the central area, the grayscale values of the sub-pixels in the transition area among the multiple sub-pixels are reduced, including: determining the grayscale coefficient of the first sub-pixel based on the position of the center point of the first sub-pixel in the target gaze point area and the width of the first area, and reducing the grayscale value of the first sub-pixel based on the grayscale coefficient of the first sub-pixel and the first image grayscale value of the first sub-pixel in the target gaze point area.

Among them, the grayscale value of the first image is used to represent the grayscale value of the first sub-pixel in the first gaze point area, or to represent the grayscale value of the first sub-pixel in the second gaze point area; the first sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the central area; the first area is a partial area in the target gaze point area.

In some embodiments, for multiple sub-pixels in the central area, reducing the grayscale values of sub-pixels in the transition area among the multiple sub-pixels includes: performing black processing on the grayscale value of the first sub-pixel to reduce the grayscale value of the first sub-pixel.

The first sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the central area.

In some embodiments, for a plurality of sub-pixels in the central area, increasing the grayscale value of a sub-pixel in a non-transition area among the plurality of sub-pixels includes: increasing the grayscale value of the second sub-pixel based on a position of a center point of the second sub-pixel in the target gaze point area and a width of the target gaze point area;

The second sub-pixel is any sub-pixel in the non-transition area among the multiple sub-pixels in the central area.

In some embodiments, the grayscale value of the second subpixel is adjusted based on the position of the center point of the second subpixel in the target gaze point area and the width of the target gaze point area to increase the grayscale value of the second subpixel, including: determining the grayscale coefficient of the second subpixel based on the position of the center point of the second subpixel in the target gaze point area and the width of the target gaze point area; determining the grayscale value of the second subpixel based on the grayscale coefficient of the second subpixel and the second image grayscale value of the second subpixel in the target gaze point area; and using the minimum value of the grayscale value of the second subpixel and the grayscale thresholds of multiple subpixels as the increased grayscale value of the second subpixel.

The second image grayscale value is used to represent the grayscale value of the second sub-pixel in the first gaze point area, or is used to represent the grayscale value of the second sub-pixel in the second gaze point area;

In some embodiments, the multiple gaze areas include an edge area, which is an area adjacent to the central area; the central area is an area at the center of the gaze point position; for each of the multiple gaze areas, the grayscale values of the sub-pixels in the gaze area are controlled based on the control strategy corresponding to the gaze area, including: for the multiple sub-pixels in the edge area, reducing the grayscale values of the sub-pixels in the transition area among the multiple sub-pixels.

In some embodiments, for multiple sub-pixels in the edge area, the grayscale value of the sub-pixels in the transition area among the multiple sub-pixels is reduced, including: reducing the grayscale value of the third sub-pixel based on the area ratio of the third sub-pixel and the third image grayscale value of the third sub-pixel.

The third image grayscale value is used to represent the image grayscale value of the third sub-pixel in the first gaze point area, or is used to represent the image grayscale value of the third sub-pixel in the second gaze point area.

In some embodiments, the area proportion of the third sub-pixel is determined based on the position of the center point of the third sub-pixel in the target gaze point area and the width of the third sub-pixel.

Among them, the third sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the edge area; the area proportion of the third sub-pixel is used to characterize the proportion of the third sub-pixel in the first gaze point area, or to characterize the proportion of the third sub-pixel in the second gaze point area.

In some embodiments, determining the reduced grayscale value of the third subpixel based on the area proportion of the third subpixel and the image grayscale value of the third subpixel includes: reducing the grayscale value of the third subpixel based on the proportion of the third subpixel in the first gaze point area, the proportion of the third subpixel in the second gaze point area, and the grayscale value of the third subpixel in the first gaze point area; or

Based on the proportion of the third sub-pixel in the first gaze point area, the proportion of the third sub-pixel in the second gaze point area, and the grayscale value of the third sub-pixel in the second gaze point area, the grayscale value of the third sub-pixel is reduced.

In some embodiments, based on the area ratio of the third sub-pixel and the image grayscale value of the third sub-pixel, the grayscale value of the third sub-pixel after reduction is determined, including: reducing the grayscale value of the third sub-pixel based on the first grayscale value of the third sub-pixel in the first gaze point area and the second grayscale value of the third sub-pixel in the second gaze point area.

Among them, the first grayscale value is determined based on the proportion of the third sub-pixel in the first gaze point area and the image grayscale value of the third sub-pixel in the first gaze point area; the second grayscale value is determined based on the proportion of the third sub-pixel in the second gaze point area and the image grayscale value of the third sub-pixel in the second gaze point area.

In some embodiments, for multiple sub-pixels in the edge area, the grayscale value of the sub-pixels in the transition area among the multiple sub-pixels is reduced, including: performing black processing on the grayscale value of the third sub-pixel to reduce the grayscale value of the third sub-pixel; the third sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the edge area.

In some embodiments, the method further includes: increasing the coverage of the transition area, and/or decreasing the coverage of the non-transition area.

In some embodiments, the position of the center point of the sub-pixel in the target gaze point area can be determined by: determining the target gaze point area based on the gaze point position; determining the position of the center point of the target sub-pixel in the target gaze point area based on the position of the central sub-pixel in the row where the target sub-pixel is located.

Among them, the target sub-pixel is any one of the first sub-pixel, the second sub-pixel, and the third sub-pixel; the first sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the central area; the second sub-pixel is any sub-pixel in the non-transition area among the multiple sub-pixels in the central area; and the third sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the edge area.

In some embodiments, based on the position of the central sub-pixel in the row where the target sub-pixel is located, the position of the center point of the target sub-pixel in the target gaze point area is determined, including: obtaining the width of the target gaze point area, and determining the width of a second area in the row where the target sub-pixel is located based on the width of the target gaze point area and the position of the central sub-pixel; and then, determining the position of the center point of the target sub-pixel in the target gaze point area based on the width of the second area.

The second area is an incomplete area on the left side of the row where the target sub-pixel is located;

In some embodiments, the method further includes: obtaining an offset between the central sub-pixel of the row where the target sub-pixel is located and the center point of the display panel; and determining a position of the central sub-pixel of the row where the target sub-pixel is located based on the offset and the sub-pixel width.

In some embodiments, the multiple gaze areas include a peripheral area, which is the area excluding the central area and the edge area; the central area is the area at the center of the gaze point position, and the edge area is the area adjacent to the central area; for each of the multiple gaze areas, the grayscale value of the sub-pixel in the gaze area is controlled based on the control strategy corresponding to the gaze area, including: for multiple sub-pixels in the peripheral area, no adjustment control is performed.

In some embodiments, the display device further includes a prism disposed above the display panel; the method further includes: determining a placement position of the prism based on device parameters of the display device.

In some embodiments, the device parameters of the display device include at least two of the following: the horizontal aperture of the prism; the arch height of the prism; the distance between the prism and the display panel; the number of sub-pixels of the display panel covered by the prism; and the width of the sub-pixels of the display panel.

In another aspect, a grayscale control device is provided, comprising a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to execute a computer program or instruction to implement the grayscale control method of the first aspect or any embodiment of the first aspect.

In another aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer program instructions, which, when executed on a computer (eg, a receiving node), causes the computer to execute the grayscale control method according to any of the above embodiments.

In another aspect, a computer program product is provided, which includes computer program instructions, and when the computer program instructions are executed on a computer (eg, a receiving node), the computer program instructions cause the computer to execute the grayscale control method according to any of the above embodiments.

In another aspect, a computer program is provided. When the computer program is executed on a computer (eg, a receiving node), the computer program enables the computer to execute the grayscale control method according to any one of the above embodiments.

Based on the above technical solution, the processor in the display device can determine multiple different gaze areas corresponding to the display panel based on the target user's gaze point in real time, and flexibly adjust and control the grayscale values of sub-pixels in different gaze areas. In other words, different control strategies are adopted for different gaze areas, effectively solving the problem of limited visual range for naked-eye 3D viewers, while also reducing crosstalk to a certain extent and improving the 3D viewing effect. The different control strategies affect the overall effect of the picture, thereby improving the user's viewing experience.

BRIEF DESCRIPTION OF THE DRAWINGS

To more clearly illustrate the technical solutions of the present disclosure, the following briefly introduces the drawings required for use in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure, and those skilled in the art can also derive other drawings based on these drawings. Furthermore, the drawings described below are schematic diagrams and are not intended to limit the actual dimensions of the products, actual processes of the methods, actual timing of signals, and the like involved in the embodiments of the present disclosure.

FIG1 is a schematic diagram illustrating a 3D effect generation in a real scene according to some embodiments;

FIG2 is a schematic diagram showing a synthesis of a left view and a right view according to some embodiments;

FIG3 is a schematic diagram illustrating an image ghosting phenomenon according to some embodiments;

FIG4 is a structural diagram of a display device according to some embodiments;

FIG5 is a structural diagram of a display device according to some other embodiments;

FIG6 is a flow chart of a grayscale control method according to some embodiments;

FIG7 is a schematic diagram of multiple gaze areas according to some embodiments;

FIG8 is a schematic diagram of an area corresponding to a gaze point according to some embodiments;

FIG9 a is a schematic diagram illustrating a combination of multiple gaze areas and an area corresponding to a gaze point according to some embodiments;

FIG9 b is a schematic diagram illustrating a combination of multiple gaze areas and an area corresponding to a gaze point according to some other embodiments;

FIG10 is a schematic diagram of a target gaze area according to some embodiments;

FIG11 is a schematic diagram of grayscale coefficient curves according to some other embodiments;

FIG12 is a scene diagram of a grayscale control method according to some embodiments;

FIG13 is a scene diagram of a grayscale control method according to some other embodiments;

FIG14 is a scene diagram of a grayscale control method according to some other embodiments;

FIG15 is a schematic diagram of a target gaze point area according to some other embodiments;

FIG16 is a scene diagram of a grayscale control method according to some other embodiments;

FIG17 is a schematic diagram of a region according to some embodiments;

FIG18 is a schematic diagram of a target gaze point area according to some other embodiments;

FIG19 is a schematic diagram of a target gaze point area according to some other embodiments;

FIG20 is a scene diagram of a prism according to some embodiments;

FIG21 is a scene diagram of a layout algorithm according to some embodiments;

FIG22 is a schematic diagram of a target gaze point area according to some other embodiments;

FIG23 is a scene diagram of a prism according to some other embodiments;

FIG24 is a scene diagram of a prism according to some other embodiments;

FIG25 is a flow chart of a grayscale control method according to some other embodiments;

FIG26 is a structural diagram of a grayscale control device according to some embodiments;

FIG. 27 is a structural diagram of a grayscale control device according to some embodiments.

DETAILED DESCRIPTION

The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the embodiments described are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and its other forms, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open, inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to indicate that the specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

“At least one of A, B and C” has the same meaning as “at least one of A, B or C” and both include the following combinations of A, B and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B and C.

“A and/or B” includes the following three combinations: A only, B only, and a combination of A and B.

As used herein, the term "if" is optionally interpreted to mean "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined that" or "if [stated condition or event] is detected" are optionally interpreted to mean "upon determining" or "in response to determining" or "upon detecting [stated condition or event]" or "in response to detecting [stated condition or event]," depending on the context.

The use of "adapted to" or "configured to" herein is intended to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

Additionally, the use of “based on” is intended to be open and inclusive, as a process, step, calculation, or other action “based on” one or more conditions or values may, in practice, be based on additional conditions or beyond values.

As used herein, “about,” “substantially,” or “approximately” includes the stated value and an average value that is within an acceptable range of deviation from the particular value, where the acceptable range of deviation is determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

As used herein, "equal" includes the stated conditions and conditions similar to the stated conditions, where the range of the similar conditions is within an acceptable range of deviation, where the acceptable range of deviation is determined by one of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). "Equal" includes absolute equality and approximate equality, where the acceptable range of deviation for approximate equality can be, for example, that the difference between the two is less than or equal to 5% of either.

The following explains the terms involved in the embodiments of the present application to facilitate readers' understanding.

1. Glasses-free 3D technology aims to provide a display technology that achieves three-dimensional visual effects without the need for auxiliary equipment. With the continuous advancement and upgrading of technology, this glasses-free 3D technology can be widely used in the field of consumer electronics, especially mainstream devices such as smartphones and TVs, and promote further innovation and development in related professional fields.

This glasses-free 3D technology, by optimizing the display system's structure and algorithms, provides users with an unprecedented immersive experience. In movies, games, and virtual reality scenarios, this technology creates a more realistic three-dimensional visual effect, making viewers feel as if they are right in the story, greatly enhancing the interactivity and realism of the entertainment experience.

Furthermore, in the field of advertising, the present invention's glasses-free 3D technology can attract more attention and enhance the effectiveness and memorability of advertising. Furthermore, for professional training, this technology can simulate more realistic operational scenarios, helping trainees better master skills and knowledge, and improving training efficiency and quality.

However, glasses-free 3D technology still faces numerous technical challenges. Specifically, image processing capabilities need to be further optimized to ensure clear and stable three-dimensional images at varying viewing angles and distances, providing users with a more realistic glasses-free 3D effect and a more immersive user experience. This technology demonstrates significant market potential in entertainment, advertising, healthcare, and education.

2. The display principle of naked-eye 3D technology. The human eye has the ability to perceive depth, which is primarily dependent on binocular parallax. Binocular parallax refers to the fact that due to the different positions of the two eyes, they have different perspectives when observing the same object, resulting in slightly different images. These different images are fused and processed by the brain, allowing us to perceive the depth and three-dimensionality of objects in space. As shown in Figure 1, in naked-eye 3D display devices, most use the principle of light splitting using spectroscopic components such as prisms or gratings to transmit different images viewed by the left and right eyes to the corresponding eyes, thereby achieving the naked-eye 3D effect.

As shown in FIG2 , the current naked-eye 3D technology mainly utilizes slit-type liquid crystal gratings and cylindrical prisms.

(1) Slit-type liquid crystal gratings use a grating in front of the screen to block the screen light. When the image that the left eye sees is displayed on the LCD screen, the opaque stripes will block the right eye. Similarly, when the image that the right eye sees is displayed on the LCD screen, the opaque stripes will block the left eye. The 3D effect can then be produced by using binocular parallax. However, due to the blocking of the screen light, the screen brightness is only 1/4 of that of a 2D screen.

(2) Columnar prism uses the refraction principle of prism to project the pixels corresponding to the left and right eyes respectively into the left and right eyes to achieve image separation, so that the observer can see a 3D stereo image. Compared with the slit grating technology, the biggest advantage is that the prism does not block the light, so the brightness of the picture is basically not affected, and the 3D display effect is better.

3. Crosstalk problem. The crosstalk problem in naked-eye 3D display is mainly caused by reasons such as the image arrangement method, optical component design and manufacturing process capabilities. In actual applications, the prism is usually placed at an angle so that the arrangement of pixels on the 2D display device is consistent with the edge angle. In actual applications, it is impossible to fully achieve a 100% light-splitting effect by relying solely on prisms and other light-splitting components. At the same time, the arrangement of pixels in the image arrangement algorithm cannot ensure that all sub-pixels are completely divided into the left view or the right view. In other words, it is inevitable that part of the brightness of the image that originally entered the left eye will enter the right eye, resulting in crosstalk.

Crosstalk is a key indicator for evaluating the quality of naked-eye 3D effects, measuring the brightness crossover between the left and right eye images. When the crosstalk reaches a certain level, ghosting can be perceived. As shown in Figure 3, it's generally believed that ghosting begins to be noticeable when the crosstalk exceeds 2%, while over 10% leads to noticeable ghosting. This indicates that crosstalk can negatively impact the viewing experience of naked-eye 3D.

4. Multi-focal point technology uses specific optical devices or technical processing methods to split a single 3D image into multiple images with different perspectives, allowing viewers to experience a realistic 3D effect from different viewing positions and angles. Specifically, through optical devices or technical processing, such as a transparent prism (rodular prism), the 3D image is divided into multiple perspectives or focal points, each corresponding to a different viewing position and angle.

The above is a brief introduction to the related technologies of this application.

In order to reduce the crosstalk rate, naked-eye 3D technology can optimize the design of prisms and other spectroscopic components to improve their spectroscopic effect. At the same time, it can ensure the accuracy of human eye tracking to improve the viewing experience and reduce crosstalk.

Traditional image arrangement algorithms in glasses-free 3D technology typically interpolate black or white sub-pixels in transition areas to reduce crosstalk. However, this single black or white interpolation of sub-pixels can lead to image distortion and increased crosstalk. Therefore, reducing crosstalk has become a key technical issue that needs to be addressed in the field of glasses-free 3D displays.

In view of this, embodiments of the present application provide a display device in which a processor can determine, in real time, multiple different gaze areas corresponding to a target user's gaze point, and flexibly adjust and control the grayscale values of sub-pixels in different gaze areas. In other words, different control strategies are employed for different gaze areas, effectively addressing the limited visual range of naked-eye 3D viewers while also reducing crosstalk to a certain extent and enhancing the 3D viewing experience. Different control strategies influence the overall effect of the image, thereby improving the user's viewing experience.

The following will describe in detail the implementation of the embodiment of the present application in conjunction with the accompanying drawings.

As shown in Figure 4, Figure 4 is a structural diagram of a display device 400 provided in an embodiment of the present application. Display device 400 can be a terminal device with a display panel, such as a television. Display device 400 can include a display panel 401, at least one processor 402, a transceiver 403, and further include a memory 404. The processor 402, memory 404, and transceiver 403 can be connected via a communication line.

In an embodiment of the present application, the display panel 401 is used to display images. The display panel 401 corresponds to multiple cycles, one cycle includes multiple gaze points, and one gaze point corresponds to one area. The area corresponding to each gaze point includes a transition area and a non-transition area.

The transition area is the area between the critical lines of the areas corresponding to any two gaze points, and the non-transition area is the area other than the transition area.

In the embodiment of the present application, the processor 402 can be a chip. Chips can include five major categories: logic chips, memory chips, sensor chips, power chips, and communication chips. Among them, the processor category mainly undertakes specific computing and control tasks in the system, such as microcontroller units (MCUs), central processing units (CPUs), graphics processing units (GPUs), neural processing units (NPUs), etc. The storage category mainly undertakes data storage chips in the system, as well as some storage controller chips, such as dynamic random access memory (DRAM), static random access memory (SRAM), flash memory (EEPROM memory, Flash), etc. The sensor category mainly undertakes information collection, presentation, and interaction chips in the system, such as input and output devices, some signal processing chips, etc. Communication chips (wired and wireless) mainly undertake communication functions in the system, such as some Ethernet chips, switching chips, wide area and local area network, point-to-point and ad hoc network chips, as well as filtering, amplification, power and other devices that assist in communication. These chips include wireless fidelity (WiFi), Bluetooth, fifth-generation mobile communication technology (5G) baseband, global positioning system (GPS), narrowband internet of things (NB-IoT), network cards, switches, etc. that are commonly known to the public.

The communication line may include a channel for transmitting information between the above components.

The memory 404 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to include or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited to these.

In one possible design, the memory 404 can exist independently of the processor 402, that is, the memory 404 can be a memory external to the processor 402. In this case, the memory 404 can be connected to the processor 402 via a communication line to store execution instructions or application code, and the execution is controlled by the processor 402 to implement the network quality determination method provided in the following embodiment of this application. In another possible design, the memory 404 can also be integrated with the processor 402, that is, the memory 404 can be the internal memory of the processor 402. For example, the memory 404 is a cache that can be used to temporarily store some data and instruction information.

As an implementation manner, the processor 402 may include one or more CPUs.

As shown in Figure 5, Figure 5 is a structural diagram of another display device provided in an embodiment of the present application. The display device may include an eye tracking module 501, a data transmission module 502, a display control module 503, and a prism grating module 504. The eye tracking module 501, the data transmission module 502, and the display control module 503 are connected via a communication network.

The eye tracking module 501 is used to capture the gaze position of the target user on the display panel, calculate and determine the coordinates of the gaze position, and send the coordinates to the data transmission module 502 .

For example, the eye tracking module 501 includes, but is not limited to, a binocular camera, a red, green, and blue depth camera (RGB-D camera), an infrared eye tracking camera, etc. The eye tracking module 501 can be installed in the middle of the top or bottom of the display device to ensure that the target user's eye position and eye movement direction can be directly captured.

In an embodiment of the present application, the data transmission module 502 can achieve efficient and stable data transmission through various schemes such as SPI (serial peripheral interface), USB (universal serial bus) or PCIe (PCI Express, a high-speed serial computer expansion bus standard).

Specifically, the SPI interface, with its high real-time performance and high-speed data transmission capabilities, can meet application scenarios with extremely high requirements for data transmission timeliness; the USB interface, with its high bandwidth and flexible and convenient characteristics, has become an ideal choice for transmitting large amounts of data; and the PCIe interface, as the standard for internal high-speed device connections, has outstanding performance and shows significant advantages when extremely high data transmission rates are required.

Exemplarily, the data transmission module 502 can format the coordinates of the gaze position, i.e., the eye position coordinates (x, y, z), and encapsulate them into a standard data packet. Subsequently, a high-speed data bus (including but not limited to SPI, USB, PCIe, etc.) is used to establish a connection between the eye tracking module 501 and the data transmission module 502. The data transmission module 502 can send the eye position coordinates (x, y, z) of the target user to the display control module 503, which will perform subsequent processing. This design ensures low latency and high bandwidth during data transmission, thereby achieving precise synchronization control of the camera's real-time capture of the eye coordinate position and the display panel pixel arrangement.

Furthermore, through the collaborative work between the modules, the embodiments of the present application can acquire and transmit accurate eye coordinate information to the display panel in real time, thereby achieving synchronous adjustment of the display panel. This process not only improves the efficiency and accuracy of data transmission, but also ensures the stability and reliability of the entire human eye tracking and display device.

In an embodiment of the present application, the display control module 503 receives the eye position coordinates (x, y, z) of the target user sent by the data transmission module 502. The display control module 503 can dynamically adjust the grayscale value of the pixel on the display panel based on the eye position coordinates and the screen coordinate data of the gaze point through a transition processing method, thereby ensuring that the user can observe the best 3D visual effect at different positions.

Specifically, the display control module 503 receives the eye position coordinates (including but not limited to position information on the x, y, and z axes) and the calculated coordinate data of the gaze point on the display panel provided by the eye tracking module 501. Subsequently, the display control module 503 uses a transition processing method to accurately and smoothly adjust the grayscale values of corresponding pixels on the display panel based on the real-time changes in the eye position coordinates and the gaze point screen coordinates.

The display control module 503 not only considers the continuity and smoothness of eye movements, but also fully incorporates the visual perception characteristics of the human eye to ensure a natural and coherent visual effect when adjusting pixel grayscale values. In this way, the display control module 503 can dynamically optimize the image content on the display panel, allowing users to obtain the best 3D viewing experience even at different viewing positions.

Furthermore, the display control module 503 technical solution proposed in the embodiment of the present application is also highly flexible and scalable, and can adapt to different types of display panels and 3D display technologies, thereby being widely used in various 3D display devices and systems, providing users with a more realistic and immersive visual experience.

In the embodiment of the present application, the light splitting effect of the prism grating module 504 can enable the target user to view the optimal 3D image effect at any angle. In other words, the embodiment of the present application can adopt the 3D display technology of cylindrical prisms, aiming to provide the target user with a stereoscopic and high-quality 3D visual experience by precisely controlling the separation and guidance of light.

Specifically, this 3D display technology utilizes the unique optical properties of a cylindrical prism to separate light from the display panel into different directions. This process involves cleverly installing the cylindrical prism at the front of the display panel. Its internal lens structure precisely controls the light emitted by each pixel, ensuring it is directed at a predetermined angle. This allows the left and right eyes to receive specially processed, differentiated image information, creating a 3D effect in the brain.

To further enhance the 3D display effect, the present invention also proposes a cylindrical prism installation method. Specifically, the cylindrical prism is tilted at a certain angle relative to the display panel. This design not only compensates for the loss of image resolution in both horizontal and vertical directions caused by parallax, maintaining high clarity in all directions, but also effectively reduces moiré patterns, avoiding disruptive streaks in the image, further enhancing the user's visual experience.

It should be noted that the display device described in the embodiment of the present application is intended to more clearly illustrate the technical solution of the embodiment of the present application, and does not constitute a limitation on the technical solution provided in the embodiment of the present application. Ordinary technicians in this field can know that with the evolution of display devices and the emergence of other display devices, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

The methods in the following embodiments can all be implemented in the display device 400 having the above hardware structure. The methods in the embodiments of the present application are described below.

The grayscale control method provided by the embodiments of the present application is described in detail below with reference to the accompanying drawings.

The embodiment of the present application can control and adjust the grayscale value of the sub-pixel to avoid crosstalk problems. The following, in conjunction with the accompanying drawings, details a grayscale control method provided by the embodiment of the present application. As shown in FIG6 , the grayscale compensation method may include S601-S602. Among them, S601 can also be referred to as the "determining multiple gaze areas" process, and S602 can also be referred to as the "controlling the sub-pixels of the corresponding gaze areas according to different control strategies" process. S601-S602 are described in detail below.

S601: Determine a plurality of gaze areas corresponding to the display panel based on a gaze point position of a target user within the display panel.

In an embodiment of the present application, the display device can obtain the gaze point position (gaze point coordinates) of the target user in real time through the human eye tracking module, and then the display device can divide the display panel into multiple gaze areas according to the gaze point position and the preset distance.

For example, the multiple fixation areas include, but are not limited to, a central area, an edge area, and a peripheral area. The central area is the area at the center of the fixation point; the edge area is the area adjacent to the central area; the central area is the area at the center of the fixation point; and the peripheral area is the area excluding the central area and the edge area.

For example, as shown in Figure 7, with the target user's gaze point (point A) as the center, a certain preset distance (radius r1) is expanded to both sides to obtain a rectangular central area. Alternatively, with the gaze point (point A) as the center of the circle, a distance of radius r1 is expanded to the periphery to obtain a circular central area. This central area is an important area for the target user to gaze at. Since the fovea is the area with the most acute visual perception on the retina and is responsible for high-resolution image processing, the target user is also most sensitive to the visual effects in this central area. Accordingly, the display device has the highest requirements for visual processing in this central area.

Furthermore, the display device continues to expand a certain preset distance (radius r2) on both sides on the basis of the central area to obtain a rectangular edge area. Alternatively, with the gaze point position (point A) as the center of the circle, the radius r2 is expanded to the periphery to obtain a circular edge area. The edge area can also be understood as the area surrounding the central area, which can be defined as the area between the radius r1 and the radius r2. It should be understood that there are still higher visual requirements in this edge area, especially during the rapid eye movement of the target user.

Furthermore, the peripheral area may be an area outside the radius r2, which is usually not directly observed and has the lowest corresponding visual demand.

Specifically, the display device can dynamically adjust the grayscale values of sub-pixels in multiple viewing areas according to the actual size and resolution of the display panel, thereby applying differentiated transition processing solutions in different areas to optimize the naked-eye 3D display effect.

S602 : For each of the multiple gaze areas, control the grayscale values of sub-pixels in the gaze area based on a control strategy corresponding to the gaze area.

At least two of the multiple gaze areas correspond to different control strategies.

In an embodiment of the present application, the display panel corresponds to multiple cycles, one cycle includes multiple gaze points, and one gaze point corresponds to one area, and the area corresponding to each gaze point includes a transition area and a non-transition area.

The transition region is the region between the critical lines of the regions corresponding to any two gaze points. It is understood that when the center point of a sub-pixel is in the transition region between the critical lines of the regions corresponding to the two gaze points, the sub-pixel will appear to span the regions corresponding to the two gaze points.

In the embodiment of the present application, the non-transition area is the area other than the transition area, and is used to indicate that a sub-pixel is entirely within the area corresponding to the gaze point. In other words, the sub-pixel does not span the areas corresponding to two gaze points.

For example, as shown in FIG8 , the display panel corresponds to multiple cycles, and each cycle includes multiple gaze points, such as gaze point 1, gaze point 2, gaze point 3, gaze point 4, and gaze point 5. Each gaze point corresponds to an area, and the area corresponding to each gaze point includes a transition area and a non-transition area. For example, the transition area is the shaded area in FIG8 , and the non-transition area is the area not shaded in FIG8 .

At the same time, there will be transition areas and non-transition areas in the central area, edge area and peripheral area, that is to say, the central area, edge area and peripheral area all overlap with the area corresponding to the gaze point.

For example, Figures 7 and 8 are combined to form the region diagram shown in Figure 9a, taking gaze points 1 and 2 as examples. With the target user's gaze point (point A) as the center, the region is expanded to both sides by a predetermined distance (radius r1) to obtain the central region. Furthermore, the region is further expanded to both sides by a predetermined distance (radius r2) to obtain the peripheral region. Accordingly, the peripheral region can be the region outside radius r2.

As can be seen from Figure 9a, the gaze point position (point A) is in the area corresponding to gaze point 1, and since the central area obtained above spans the areas corresponding to gaze point 1 and gaze point 2, the central area includes a transition area (shaded part) and a non-transition area (non-shaded part). In Figure 9a, the edge area does not include a transition area and a non-transition area. The embodiment of the present application is only an example for easy understanding. In actual scenarios, the edge area may also include a transition area and a non-transition area, and the embodiment of the present application is not limited to this.

For another example, combining Figures 7 and 8 forms a regional diagram as shown in Figure 9b. The display panel corresponds to multiple cycles, and one cycle includes multiple gaze points, such as gaze point 1, gaze point 2, gaze point 3, gaze point 4, and gaze point 5. With the target user's gaze point position (point A) as the center, a certain preset distance (radius r1) is expanded to both sides to obtain the central area, and on the basis of the central area, a certain preset distance (radius r2) is further expanded to both sides to obtain the edge area. Correspondingly, the peripheral area can be the area outside the radius r2. It should be understood that different control strategies will be adopted for point B in the central area, point C in the edge area, and point D in the peripheral area to adjust the grayscale value.

The control strategy for the central area in the embodiment of the present application is as follows:

In an embodiment of the present application, for multiple sub-pixels in the central area, the grayscale values of the sub-pixels in the transition area among the multiple sub-pixels are reduced and/or the grayscale values of the sub-pixels in the non-transition area among the multiple sub-pixels are increased.

Specifically, for the multiple sub-pixels in the central area, the processing method of the display device can be any one of the following methods (1), (2), (3), (4), and (5).

Method (1): For multiple sub-pixels in the central area, the grayscale values of the sub-pixels in the transition area are reduced. For example, the grayscale coefficient of the first sub-pixel is determined based on the position of the center point of the first sub-pixel in the target gaze point area and the width of the first area, and the grayscale value of the first sub-pixel is reduced based on the grayscale coefficient of the first sub-pixel and the grayscale value of the first image in the target gaze point area.

The first sub-pixel is any sub-pixel in the transition region among the multiple sub-pixels in the central region. The first image grayscale value is used to represent the grayscale value of the first sub-pixel in the first gazing point region, or to represent the grayscale value of the first sub-pixel in the second gazing point region.

In some embodiments, the target gaze point area is an area among the multiple gaze point areas that has an impact on the grayscale value of the first sub-pixel.

For example, the target gaze point area includes a first gaze point area and a second gaze point area, wherein one of the first gaze point area and the second gaze point area is an area corresponding to the gaze point at which the gaze point is located, and the other is an area adjacent to the area corresponding to the gaze point. In other words, the display device can determine the target gaze point area based on the gaze point location.

For example, in combination with Figure 9a, taking the gaze point position (point A) as an example, the gaze point position (point A) is in the area corresponding to gaze point 1, then the area corresponding to gaze point 1 is the first gaze point area, and correspondingly, the area corresponding to gaze point 2 adjacent to the first gaze point area is the second gaze point area.

For another example, assuming the gaze point (point A) is in the area corresponding to gaze point 2, the area corresponding to gaze point 2 is the first gaze point area. Using the centerline of the area corresponding to gaze point 2 as the dividing line, if the gaze point (point A) is located to the left of the area corresponding to gaze point 2, the second gaze point area is the area corresponding to gaze point 1. It should be understood that in this case, the areas corresponding to gaze point 1 and gaze point 2 will affect the grayscale value of the first sub-pixel.

If the gaze point position (point A) is located in the right area of the area corresponding to gaze point 2, then the second gaze point area is the area corresponding to gaze point 3. At this time, the area corresponding to gaze point 2 and the area corresponding to gaze point 3 are the areas that affect the grayscale value of the first sub-pixel.

For another example, as shown in Figure 9b, taking the gaze point position (point A) as an example, if this gaze point position (point A) is in the area corresponding to gaze point 4, then the area corresponding to gaze point 4 is the first gaze point area. Using the center line of the area corresponding to gaze point 4 as the dividing line, if the gaze point position (point A) is located to the left of the area corresponding to gaze point 4, then the second gaze point area is the area corresponding to gaze point 3. If the gaze point position (point A) is located to the right of the area corresponding to gaze point 4, then the second gaze point area is the area corresponding to gaze point 5. As shown in Figure 9b, the second gaze point area is the area corresponding to gaze point 5.

In another exemplary embodiment, the display device may determine the target gaze point area based on the positions of the sub-pixels, where the sub-pixels may be the first sub-pixel, the second sub-pixel, or the third sub-pixel.

For example, in conjunction with Figure 9b, take point B as an example. Point B can be understood as the first sub-pixel. If point B is in the area corresponding to gaze point 4, then the area corresponding to gaze point 4 is the first gaze point area. Taking the center line of the area corresponding to gaze point 4 as the dividing line, if point B is located in the left area of the area corresponding to gaze point 4, then the second gaze point area is the area corresponding to gaze point 3. If point B is located in the right area of the area corresponding to gaze point 4, then the second gaze point area is the area corresponding to gaze point 5. As shown in Figure 9b, the second gaze point area is the area corresponding to gaze point 5.

For another example, in conjunction with Figure 9b, take point C as an example. Point C can be understood as the third sub-pixel. If point C is in the area corresponding to gaze point 5, then the area corresponding to gaze point 5 is the first gaze point area. Taking the center line of the area corresponding to gaze point 5 as the dividing line, if point C is located in the left area of the area corresponding to gaze point 5, then the second gaze point area is the area corresponding to gaze point 4. If point C is located in the right area of the area corresponding to gaze point 5, then the second gaze point area is the area corresponding to gaze point 1 in the adjacent cycle. As shown in Figure 9b, the second gaze point area is the area corresponding to gaze point 4.

It should be understood that the transition area provided in the embodiment of the present application includes but is not limited to a first sub-transition area and a second sub-transition area, the first sub-transition area is an area adjacent to the boundary of the gaze point area, and the second sub-transition area is a transition area other than the first sub-transition area.

For example, let's take the target gaze area as the first gaze area (the area corresponding to gaze point 1) and the second gaze area (the area corresponding to gaze point 2). As shown in Figure 10, the width of a subpixel can be D-H; the width of 0.5 subpixels can be A-C, E-G, I-K, and so on. If the center point of the first subpixel is in the C-D area, then the first subpixel is completely in the first gaze area; if the center point of the first subpixel is in the H-I area, then the first subpixel is completely in the second gaze area. In other words, A-C, D-H, and I-K are transition areas.

Since A-B, E-F, F-G, and J-K are adjacent to the boundary of the gaze area, A-B, E-F, F-G, and J-K can be the first sub-transition area. Correspondingly, the transition areas B-C, D-E, G-H, and I-J in the transition area other than the first sub-transition area can be the second sub-transition area.

Furthermore, after determining the target gaze point area, the grayscale value of the reduced first sub-pixel is calculated. First, the grayscale coefficient of the first sub-pixel is determined based on the position of the center point of the first sub-pixel in the target gaze point area and the width of the first area.

The first area is a partial area in the target gaze point area.

In conjunction with Figure 10, as shown in Figure 11, when the center point of the first subpixel is within any of the regions AB, EF, FG, and JK, the display device can reduce the grayscale values of the first subpixel's corresponding position in the first and second foveation regions using the x^2 function. Specifically, the display device can determine the grayscale coefficient k_score of the first subpixel using the following formula 1.
k_score=((position-line_f)^2/d^2) Formula 1

Among them, position is the position of the center point of the first subpixel in the target gaze point area, that is, the distance between the center point of the first subpixel and the leftmost side of the target gaze point area; line_f is the width of the first area, that is, the width from A to F, and d is the width of the area between the two letters.

It should be noted that, taking the width of the A-B or J-K area as d as an example, the width of the E-G area is 2d, where 0<d≤subpixel/2, and the display device adjusts the range of the transition area by adjusting the size of d.

Furthermore, the display device reduces the grayscale value of the first subpixel based on the grayscale coefficient of the first subpixel and the image grayscale value of the first subpixel in the target gaze point area to obtain a reduced grayscale value of the first subpixel.

The image grayscale value is used to represent the grayscale value of the first sub-pixel in different gaze point areas in the target gaze point area.

For example, taking the case where the center point of the first subpixel is in the first sub-transition region of the first foveation region, that is, when the center point of the first subpixel is in the AB or EF region, the display device may substitute the grayscale coefficient k_score of the first subpixel into the following formula 2 to determine the reduced grayscale value of the first subpixel.
value=k_score*value_right Formula 2

Wherein, value_right is the grayscale value of the first sub-pixel in the first gaze point area.

It is understandable that the first sub-pixels are located at different positions, and thus have corresponding grayscale coefficients that are different, and thus have different grayscale values.

In an embodiment of the present application, the display device uses Formula 1 and Formula 2 to obtain the reduced grayscale value of the first sub-pixel, and the current grayscale value of the first sub-pixel can be adjusted to the reduced grayscale value.

Method (2): For the plurality of sub-pixels in the central region, the grayscale values of the sub-pixels in the transition region are reduced. For example, the grayscale value of the first sub-pixel is blacked out to reduce the grayscale value of the first sub-pixel, thereby obtaining the reduced grayscale value of the first sub-pixel.

The first sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the central area.

For example, if the center point of a first subpixel is in a transition region, the display device sets the grayscale value of the first subpixel to a preset value. As shown in Figure 10, taking the preset value of 0 as an example, if the center point of the first subpixel is in the A-C region, the D-H region, and the I-K region, the display device sets the grayscale value of the first subpixel to 0, i.e., performs black removal processing on the subpixel in the transition region. In this embodiment of the present application, after the display device performs black removal processing, the display effect of the image can be as shown in Figure 12.

For another example, when the center point of a first subpixel is within the first sub-transition region, the display device sets the grayscale value of the first subpixel to a preset value. As shown in FIG10 , taking the preset value of 0 as an example, if the center point of the first subpixel is within any of the first sub-transition regions A-B, E-F, F-G, and J-K, the display device may set the grayscale value of the first subpixel to 0, i.e., perform black removal processing on the subpixel within the transition region.

Method (3): For the multiple sub-pixels in the central area, increase the grayscale value of the sub-pixels in the non-transition area among the multiple sub-pixels.

In some embodiments, the display device increases the grayscale value of the second subpixel based on the position of the center point of the second subpixel in the target gaze point area and the width of the target gaze point area to obtain an increased grayscale value of the second subpixel.

The second sub-pixel is any sub-pixel in the non-transition area among the multiple sub-pixels in the central area.

Exemplarily, the display device determines the grayscale coefficient of the second subpixel based on the position of the center point of the second subpixel in the target gaze point area and the width of the target gaze point area, and determines the grayscale value of the second subpixel based on the grayscale coefficient of the second subpixel and the second image grayscale value of the second subpixel in the target gaze point area, and then uses the minimum grayscale value between the grayscale value of the second subpixel and the grayscale threshold as the increased grayscale value of the second subpixel.

The second image grayscale value is used to represent the grayscale value of the second sub-pixel in the first gaze point area, or is used to represent the grayscale value of the second sub-pixel in the second gaze point area.

Alternatively, the non-transition region may include a second sub-transition region. For example, as shown in FIG10 , the non-transition region may be B-E and G-J. The non-transition region may also be C-D and H-I.

For example, taking the non-transition regions BE and GJ as an example, the display device can increase the grayscale values of the first and second foveation regions corresponding to the sub-pixels in the non-transition region using a sin function. Specifically, the display device can _determine the grayscale coefficient k_score of the second sub-pixel using the following formula 3.
k_score ₌ k_ratio*sin(2*π(position-d)/(deltax-4*d))+1 Formula 3

Wherein, k_ratio is the increase coefficient; position is the position of the center point of the second sub-pixel in the target gaze point area; deltax is the width of the target gaze point area.

Further, taking the case where the center point of the second sub-pixel is at BE as an example, the display device may substitute the grayscale coefficient k_score _≠ = of the second sub-pixel into the following formula 4 to determine the grayscale value _≠ of the second sub-pixel.
value _NOT = k_score _NOT * value_right _NOT Formula 4

Wherein, value_right _is the grayscale value of the second sub-pixel in the first gaze point area.

Correspondingly, if the center point of the second sub-pixel is at GJ, the display device may _substitute the grayscale value k_score= of the second sub-pixel into the following formula 5 to determine the grayscale value _value of the second sub-pixel.
_value =k_score _{* value_left} Formula 5

Wherein, value_left _is the grayscale value of the second sub-pixel in the second gaze point area.

In the embodiment of the present application, _after the display device determines the grayscale value value of the second sub-pixel, it compares the grayscale value value of the second sub-pixel _with the grayscale threshold 255, and determines the smallest grayscale value between the two as the increased grayscale value of the second sub-pixel.

Method (4): For the plurality of sub-pixels in the central area, the grayscale values of the sub-pixels in the transition area among the plurality of sub-pixels are reduced, and the grayscale values of the sub-pixels in the non-transition area among the plurality of sub-pixels are increased. For example, the display device may combine the above-mentioned method (1) with the method (3), that is, the grayscale values of the sub-pixels in the transition area are reduced by the method of method (1), and the grayscale values of the sub-pixels in the non-transition area are increased by the method of method (3).

In the embodiment of the present application, after combining method (1) and method (3), the display effect of the image can be as shown in Figure 13.

Method (5): For the plurality of sub-pixels in the central area, the grayscale values of the sub-pixels in the transition area among the plurality of sub-pixels are reduced, and the grayscale values of the sub-pixels in the non-transition area among the plurality of sub-pixels are increased. For example, the display device may combine the above-mentioned method (2) with the method (3), that is, the grayscale values of the sub-pixels in the transition area are reduced by the method of method (2), and the grayscale values of the sub-pixels in the non-transition area are increased by the method of method (3).

In the embodiment of the present application, after combining method (2) and method (3), the display effect of the image can be as shown in Figure 14.

Based on the above scheme, the display device in the embodiment of the present application performs the action of reducing the grayscale value of the sub-pixels in the transition area in the central area, and increases the grayscale value of the sub-pixels in the non-transition area, so as to balance the width of the high-brightness platform and the low-brightness platform in the transition area and the non-transition area, and further effectively improve the actual visual range of naked-eye 3D.

The above describes in detail how to process multiple sub-pixels in the central area.

The following is a detailed overview of how a display device processes multiple sub-pixels in an edge area. Specifically, the control strategy for the edge area is as follows:

In the embodiment of the present application, for the multiple sub-pixels in the edge area, the grayscale values of the sub-pixels in the transition area among the multiple sub-pixels are reduced.

In some embodiments, the area ratio of the third sub-pixel is determined based on the position of the center point of the third sub-pixel in the target gaze point area and the width of the third sub-pixel, and the grayscale value of the third sub-pixel is reduced based on the area ratio of the third sub-pixel and the third image grayscale value of the third sub-pixel to obtain the reduced grayscale value of the third sub-pixel.

Among them, the third sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the edge area; the area proportion of the third sub-pixel is used to characterize the proportion of the third sub-pixel in the first gaze point area, or to characterize the proportion of the third sub-pixel in the second gaze point area; the third image grayscale value is used to characterize the grayscale value of the third sub-pixel in the first gaze point area, or to characterize the grayscale value of the third sub-pixel in the second gaze point area.

For example, with reference to FIG10 , assuming the third sub-pixel is in the first sub-transition region, since the first sub-transition region includes four transition regions at different positions (e.g., A-B, E-F, F-G, and J-K), the display device can use different formulas to calculate the area ratio of the third sub-pixel when the third sub-pixel is in the first sub-transition region at different positions.

Specifically, the display device may determine the area ratio of the third sub-pixel according to any one of the following cases (1), (2), (3), and (4).

Case (1): When the center point of the third sub-pixel is in the first sub-transition area AB, the display device can determine the proportion k_right of the third sub-pixel in the first gaze point area by the following formula 6.
k_right＝(position+subpixel/2)/subpixel Formula 6

Where position is the position of the third subpixel's center point within the target fixation area, and subpixel is the width of one subpixel (the third subpixel). It should be noted that position can be understood as the distance from the third subpixel's center point to the leftmost side of the target fixation area. For example, if the third subpixel's center point is on the line to point B, then position is the distance from point A to point B.

Furthermore, the display device may obtain a proportion k_left of the third sub-pixel in the second gaze point area according to a proportion k_right of the third sub-pixel in the first gaze point area, ie, k_left=1−k_right.

Case (2): When the center point of the third sub-pixel is in the first sub-transition area EF, the display device can determine the proportion k_right of the third sub-pixel in the first gaze point area by the following formula 7.
k_right＝(deltax/2-position+subpixel/2)/subpixel Formula 7

Wherein, position is the position of the center point of the third sub-pixel in the target gaze point area, subpixel is the width of a sub-pixel (the third sub-pixel), and deltax is the width of the target gaze point area.

For example, as shown in Figure 15, the center point of the third subpixel is at point E. deltax/2 is the width of half the target gaze area, such as the width from A to F. Position is the width from A to E, and deltax/2-position can be used to calculate the width from E to F. subpixel/2 is half the width of a subpixel, that is, the width from P to E. The display device adds the width from E to F to the width from P to E to obtain the width from P to F. Using the width from P to F and the width of one subpixel, it calculates the proportion of the third subpixel in the first gaze area.

It can be understood that the area ratio of the third sub-pixel in the embodiment of the present application can be understood as a process of solving the area.

The display device may obtain a proportion k_right of the third sub-pixel in the first gaze point area according to a proportion k_left of the third sub-pixel in the second gaze point area, that is, k_right=1−k_left.

Case (3): When the center point of the third sub-pixel is in the first sub-transition region FG, the display device can determine the proportion k_right of the third sub-pixel in the first gaze point region by the following formula 8.
k_left＝(position-deltax/2+subpixel/2)/subpixel Formula 8

Wherein, position is the position of the center point of the third sub-pixel in the target gaze point area, subpixel is the width of a sub-pixel (the third sub-pixel), and deltax is the width of the target gaze point area.

The display device may obtain a proportion k_left of the third sub-pixel in the second gaze point area based on a proportion k_right of the third sub-pixel in the first gaze point area, that is, k_left=1−k_right.

Case (4): When the center point of the third sub-pixel is in the first sub-transition area JK, the display device can determine the proportion k_right of the third sub-pixel in the first gaze point area by the following formula 9.
k_left＝(deltax-positon+subpixel/2)/subpixel Formula 9

Wherein, position is the position of the center point of the third sub-pixel in the target gaze point area, subpixel is the width of a sub-pixel (the third sub-pixel), and deltax is the width of the target gaze point area.

The display device may obtain a proportion k_left of the third sub-pixel in the second gaze point area based on a proportion k_right of the third sub-pixel in the first gaze point area, that is, k_left=1−k_right.

In an embodiment of the present application, after the display device determines the area ratio of the third sub-pixel through any one of the formulas in the above cases (1) to (4), the grayscale value of the third sub-pixel after reduction can be determined through the area ratio.

The area proportion of the third sub-pixel includes the area proportion of the third sub-pixel in the first gaze point area and the area proportion of the third sub-pixel in the second gaze point area.

It should be noted that whether the display device uses the grayscale value of the third pixel in the first foveation area or the grayscale value of the third pixel in the second foveation area is determined based on whether the center point of the third sub-pixel is located in the first foveation area or the second foveation area. For example, if the center point of the third sub-pixel is located in the first foveation area, the grayscale value of the third sub-pixel in the first foveation area is used; if the center point of the third sub-pixel is located in the second foveation area, the grayscale value of the third sub-pixel in the second foveation area is used.

Furthermore, the display device uses the grayscale value of the third pixel in the first foveation area, or uses the grayscale value of the third pixel in the second foveation area, based on whether the first sub-transition area where the center point of the third sub-pixel is located is in the first foveation area or the second foveation area. For example, if the first sub-transition area where the center point of the third sub-pixel is located is in the first foveation area, the grayscale value of the third sub-pixel in the first foveation area is used; if the first sub-transition area where the center point of the third sub-pixel is located is in the second foveation area, the grayscale value of the third sub-pixel in the second foveation area is used.

In some embodiments, the display device reduces the grayscale value of the third subpixel based on the proportion of the third subpixel in the first gaze point area, the proportion of the third subpixel in the second gaze point area, and the grayscale value of the third subpixel in the first gaze point area to obtain the reduced grayscale value of the third subpixel.

Alternatively, based on the proportion of the third sub-pixel in the first gaze point area, the proportion of the third sub-pixel in the second gaze point area and the grayscale value of the third sub-pixel in the second gaze point area, the grayscale value of the third sub-pixel is reduced to obtain the reduced grayscale value of the third sub-pixel.

For example, as shown in FIG10 , since the first sub-transition region includes four transition regions at different positions, the display device can use different formulas to obtain the reduced grayscale value of the third sub-pixel when the third sub-pixel is in the first sub-transition region at different positions. Specifically, the display device can determine the target grayscale value according to either of the following cases (5) and (6).

In case (5), the display device uses the grayscale value of the third subpixel in the first gaze point area to determine the grayscale value of the third subpixel after the reduction. Combining the above cases (1) and (2), as shown in FIG10 . In the case where the center point of the third subpixel is in the first sub-transition area AB, or the first sub-transition area EF, since the first sub-transition area AB and the first sub-transition area EF are in the first gaze point area of the target gaze point area, the display device can determine the grayscale value of the third subpixel after the reduction by using the following formula 10.
value＝(k_right-k_left)*value_right Formula 10

Wherein, value_right is the grayscale value of the third sub-pixel in the first gaze point area.

In case (6), the display device uses the grayscale value of the third subpixel in the second gaze point area to determine the grayscale value of the third subpixel after the reduction. Combining the above cases (3) and (4), as shown in FIG10 . In the case where the center point of the third subpixel is in the first sub-transition area FG, or the first sub-transition area JK, since the first sub-transition area FG and the first sub-transition area JK are in the second gaze point area of the target gaze point area, the display device can determine the grayscale value of the third subpixel after the reduction by the following formula 11.
value=(k_left-k_right)*value_left Formula 11

Wherein, value_left is the grayscale value of the third sub-pixel in the second gaze point area.

In the embodiment of the present application, after the display device is processed through situation (5) or situation (6), the display effect of the image can be as shown in Figure 16.

It is understandable that, assuming that the target user is at gaze point 1. As shown in Figure 17, the light emitted by the pixels on the 3D display panel passes through the spectral effect of the prism and enters the left and right eyes of the target user respectively. The image formed by the area viewed by the left eye through the prism grating is the left image. Similarly, the image formed by the area viewed by the right eye through the prism grating is the right image. In other words, the third sub-pixel can correspond to an image grayscale value in the first gaze point area, namely the first grayscale value. Correspondingly, it can also correspond to an image grayscale value in the second gaze point area, namely the second grayscale value.

In some embodiments, based on the first grayscale value of the third subpixel in the first gaze point area and the second grayscale value of the third subpixel in the second gaze point area, the grayscale value of the third subpixel is reduced to obtain the reduced grayscale value of the third subpixel.

Among them, the first grayscale value is determined based on the proportion of the third sub-pixel in the first gaze point area and the image grayscale value of the third sub-pixel in the first gaze point area; the second grayscale value is determined based on the proportion of the third sub-pixel in the second gaze point area and the image grayscale value of the third sub-pixel in the second gaze point area.

Exemplarily, the display device can determine a first grayscale value based on the proportion of the third sub-pixel in the first gaze point area and the image grayscale value of the third sub-pixel in the first gaze point area, and determine a second grayscale value based on the proportion of the third sub-pixel in the second gaze point area and the grayscale value of the third sub-pixel in the second gaze point area.

It should be understood that the first grayscale value is the adjusted grayscale value of the third sub-pixel in the first gaze point area, and the second grayscale value is the adjusted grayscale value of the third sub-pixel in the second gaze point area.

In an embodiment of the present application, the display device can determine the grayscale value of the third sub-pixel after reduction based on the first grayscale value and the second grayscale value, so as to avoid the problem of unsatisfactory processing effect caused by the fact that the third sub-pixel occupies a small area in the gaze point area but the grayscale value of the third sub-pixel in the gaze point area is large.

For example, as shown in FIG10 , since the first sub-transition region includes four transition regions at different positions (A-B, E-F, F-G, and J-K), the display device can use different formulas to determine the grayscale value of the third sub-pixel after reduction when the third sub-pixel is in the first sub-transition region at different positions. Specifically, the display device can determine the grayscale value of the third sub-pixel after reduction according to either of the following cases (7) and (8).

Case (7), combined with the above cases (1) and (2), as shown in Figure 10. When the center point of the third sub-pixel is in the first sub-transition area AB, or the first sub-transition area EF, since the first sub-transition area AB and the first sub-transition area EF are in the first gaze point area, the display device can determine the grayscale value of the third sub-pixel after reduction by the following formula 12.
value＝k_left*value_left-k_right*value_right Formula 12

Case (8), combined with the above cases (3) and (4), is shown in Figure 10. When the center point of the third sub-pixel is in the first sub-transition region FG, or the first sub-transition region JK, since the first sub-transition region FG and the first sub-transition region JK are in the second gaze point area, the display device can determine the grayscale value of the third sub-pixel after reduction by the following formula 13.
value＝k_right*value_right-k_left*value_left Formula 13

It can be understood that if the third sub-pixel occupies a small area in the gazing point area and the grayscale value of the third sub-pixel in the gazing point area is large, the brightness of the third sub-pixel is affected by the grayscale value and is brighter. Similarly, if the third sub-pixel occupies a large area in the gazing point area, but the grayscale value of the third sub-pixel in the gazing point area is small, the brightness of the third sub-pixel is affected by the grayscale value and is darker. Furthermore, the grayscale value of the third sub-pixel can be better adjusted through the above situation (7) and situation (8). In the embodiment of the present application, after the display device adopts the above situation (7) or situation (8) for processing, the display effect of the image can be as shown in Figure 18.

In another example, in combination with FIG10, it is assumed that the third sub-pixel is in the second sub-transition region. Since the second sub-transition region includes four transition regions at different positions (e.g., B-C, D-E, G-H, and J-K), when the third sub-pixel is in the second sub-transition region at different positions, the display device can use different formulas to obtain the area ratio of the third sub-pixel. Specifically, the display device can determine the area ratio of the third sub-pixel according to any one of the following cases (9), (10), (11), and (12).

In case (9), when the center point of the third subpixel is in the second sub-transition region B-C, the display device can determine the proportion k_right of the third subpixel in the first foveation region using formula 6 in case (1). Accordingly, the proportion k_left of the third subpixel in the second foveation region is obtained, i.e., k_left = 1 - k_right.

In case (10), when the center point of the third subpixel is in the second sub-transition region D-E, the display device can determine the proportion k_right of the third subpixel in the first foveation region using formula 7 in case (2). Accordingly, the proportion k_left of the third subpixel in the second foveation region is obtained, i.e., k_left = 1 - k_right.

In case (11), when the center point of the third subpixel is in the second sub-transition region G-H, the display device can determine the proportion k_right of the third subpixel in the first gazing point region using Formula 8 in case (3). Accordingly, the proportion k_left of the third subpixel in the second gazing point region is obtained, i.e., k_left = 1 - k_right.

In case (12), when the center point of the third subpixel is in the second transition sub-region J-K, the display device can determine the proportion k_right of the third subpixel in the first foveation area using Formula 9 in case (4). Accordingly, the proportion k_left of the third subpixel in the second foveation area is obtained, i.e., k_left = 1 - k_right.

In an embodiment of the present application, after the display device determines the area ratio of the third sub-pixel through any one of the formulas in the above cases (9) to (12), the grayscale value of the third sub-pixel after reduction can be determined through the area ratio.

In one possible implementation, the display device can determine the grayscale value of the third subpixel after reduction based on the difference between the proportion of the third subpixel in the first gaze point area and the proportion of the third subpixel in the second gaze point area, and the grayscale value of the third subpixel in the second gaze point area.

Optionally, the display device can also determine the grayscale value of the third subpixel after reduction based on the difference between the proportion of the third subpixel to the first gaze point area and the proportion of the third subpixel to the second gaze point area, and the grayscale value of the third subpixel in the first gaze point area.

For example, as shown in FIG10 , since the second sub-transition region includes transition regions at four different positions, the display device can use different formulas to determine the grayscale value of the third sub-pixel after reduction when the third sub-pixel is in the second sub-transition region at different positions. Specifically, the display device can determine the grayscale value of the third sub-pixel after reduction according to either of the following cases (13) and (14).

In case (13), the display device uses the grayscale value of the third sub-pixel in the first gazing point area to determine the grayscale value of the third sub-pixel after the reduction. Combining the above cases (9) and (10), as shown in Figure 10. When the center point of the third sub-pixel is in the second sub-transition area B-C, or the second sub-transition area D-E, since the second sub-transition area B-C and the second sub-transition area D-E are in the first gazing point area, the display device can determine the grayscale value of the third sub-pixel after the reduction by using formula 10 in the above case (5).

In case (14), the display device uses the grayscale value of the third sub-pixel in the second gazing point area to determine the grayscale value of the third sub-pixel after reduction. Combining the above cases (3) and (4), as shown in Figure 10. When the center point of the third sub-pixel is in the second sub-transition area G-H, or the second sub-transition area I-J, since the second sub-transition area G-H and the second sub-transition area I-J are in the second gazing point area, the display device can determine the grayscale value of the third sub-pixel after reduction by using formula 11 in the above case (6).

In an embodiment of the present application, when the center point of the third sub-pixel is in the second sub-transition area, the display device determines the grayscale value of the reduced third sub-pixel through situation (13) or situation (14), and adjusts the current grayscale value of the third sub-pixel. The display effect of the adjusted image can be as shown in Figure 14.

In another possible implementation, the display device may determine the first grayscale value based on the proportion of the third sub-pixel in the first gaze point area and the image grayscale value of the third sub-pixel in the first gaze point area, and determine the second grayscale value based on the proportion of the third sub-pixel in the second gaze point area and the grayscale value of the third sub-pixel in the second gaze point area.

It should be understood that the first grayscale value is the adjusted image grayscale value of the third sub-pixel in the first gaze point area, and the second grayscale value is the adjusted image grayscale value of the third sub-pixel in the second gaze point area.

In an embodiment of the present application, the display device can reduce the grayscale value of the third sub-pixel according to the first grayscale value and the second grayscale value to obtain the reduced grayscale value of the third sub-pixel, thereby avoiding the problem of unsatisfactory processing effect caused by the fact that the third sub-pixel occupies a small area in the gaze point area but the grayscale value of the third sub-pixel in the gaze point area is large.

For example, as shown in FIG10 , since the second sub-transition region includes four transition regions at different positions (B-C, D-E, G-H, and I-J), the display device can use different formulas to determine the grayscale value of the third sub-pixel after reduction when the third sub-pixel is in the second sub-transition region at different positions. Specifically, the display device can determine the grayscale value of the third sub-pixel after reduction according to either of the following cases (15) and (16).

Case (15), combined with the above cases (9) and (10), is shown in Figure 10. When the center point of the third sub-pixel is in the second sub-transition area B-C, or the second sub-transition area D-E, since the second sub-transition area B-C and the second sub-transition area D-E are in the first gaze point area, the display device can determine the grayscale value of the third sub-pixel after reduction by using Formula 12 in the above case (7).

Case (16), combined with the above cases (11) and (12), is shown in Figure 10. When the center point of the third sub-pixel is in the second sub-transition region G-H, or in the second sub-transition region I-J, the second sub-transition region G-H and the second sub-transition region I-J are in the second gaze point area, so the display device can determine the grayscale value of the third sub-pixel after reduction by using formula 13 in the above case (8).

In an embodiment of the present application, when the center point of the third sub-pixel is in the second sub-transition area, the display device determines the grayscale value of the reduced third sub-pixel through situation (15) or situation (16), and adjusts the current grayscale value of the third sub-pixel. The display effect of the adjusted image can be as shown in Figure 19.

In the examples of this application, a 31.5 8K naked-eye 3D project sample was used as an example to test the crosstalk rate of a combined black and white image and to capture a 3D effect of a flower. For edge regions, the display device reduced the grayscale values of the subpixels in the edge regions. Compared to an image arrangement algorithm without transition processing, a crosstalk rate test was performed on the combined image and the actual 3D effect of the flower. The method of reducing the grayscale values of the subpixels in the edge regions reduced the crosstalk rate by approximately 1%, significantly reducing ghosting and effectively improving the 3D effect.

In the embodiment of the present application, the grayscale value of the third sub-pixel is subjected to black processing to determine the reduced grayscale value of the third sub-pixel.

The third sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the edge area.

Exemplarily, when the center point of the third subpixel is in the transition region, the display device sets the grayscale value of the third subpixel to a preset value. As shown in FIG10 , taking the preset value of 0 as an example, when the center point of the third subpixel is in the A-C region, the D-H region, and the I-K region, the display device sets the grayscale value of the third subpixel to 0, i.e., performing black removal processing on the subpixel in the transition region.

The above is a detailed introduction to the sub-pixel processing method in the transition area of the edge area in the embodiment of the present application.

The following is an overview of the processing method of the peripheral area in the embodiment of the present application, that is, the control strategy for the peripheral area is as follows:

In the embodiment of the present application, no adjustment control is performed on the multiple sub-pixels in the peripheral area.

It should be understood that the peripheral area is the area other than the central area and the edge area. Since the peripheral area is usually not directly looked at, the corresponding visual requirements are the lowest. Therefore, the grayscale values of the sub-pixels in the peripheral area can be left unprocessed to compensate for the brightness reduction caused by reducing the grayscale values of the sub-pixels in other areas (central area and edge area).

It should be noted that the embodiments of the present application can adjust the coverage of the transition area and the non-transition area based on actual usage. For example, the coverage of the transition area can be increased and/or the coverage of the non-transition area can be decreased. If the coverage of the transition area is increased, the range of the transition processing will also be increased, which will correspondingly enhance the effect of the display device on the grayscale value transition processing of the sub-pixels.

Based on the above technical solution, the display device of the present application embodiment can determine multiple different gaze areas corresponding to the display panel based on the target user's gaze point in real time, and flexibly adjust and control the grayscale values of sub-pixels in different gaze areas. In other words, different control strategies are adopted for different gaze areas, thereby effectively reducing crosstalk rate, expanding the visible range of naked-eye 3D viewing, and improving the user's viewing experience.

In an embodiment of the present application, the display device can determine the positions of the center points of different sub-pixels in the target gaze point area.

In one possible implementation, the display device may determine the target gaze point area based on the gaze point position, and determine the position of the center point of the target sub-pixel in the target gaze point area based on the position of the center sub-pixel in the row where the target sub-pixel is located.

The target sub-pixel is any one of the first sub-pixel, the second sub-pixel, and the third sub-pixel mentioned above.

Exemplarily, the display device can obtain the width of the target gaze point area, and based on the width of the target gaze point area and the position of the central sub-pixel, determine the width of the second area in the row where the target sub-pixel is located, and then determine the position of the center point of the target sub-pixel in the target gaze point area based on the width of the second area.

The second area is an incomplete area on the left side of the row where the target sub-pixel is located.

For example, as shown in FIG20 , the distance between the human eye and the prism in the display panel is z, the distance between the prism and the display panel in the display panel is h, and the horizontal pitch value of the prism is pitch. The display device can determine the coverage of a prism on the display panel, that is, a target gaze point area deltax satisfies the following formula 14:
deltax＝(z+h)*pitch/z Formula 14

The display device substitutes the deltax of a target gaze point area into Formula 15 to obtain the width of the incomplete area on the leftmost side of the row:
edge_distance=(x _i -deltax/2)%deltax Formula 15

Wherein, edge_distance is the width of a portion of the area in the row, _xi is the position of the central sub-pixel in the i-th row (the position of the central sub-pixel), and % is used to represent the remainder algorithm.

Then, the display device obtains the specific position of the target sub-pixel based on the distance between the center sub-pixel and the leftmost edge. That is, the display device substitutes the center sub-pixel position x _i and a portion of the period width edge_distance of the row into the following formula 16:
position＝(x _i +deltax-edge_distance)%deltax Formula 16

Wherein, position is the position of the center point of the target sub-pixel in the target fixation area. As shown in FIG21 , point B is the position of the center sub-pixel x _i , and point C is the center point of the target sub-pixel.

For example, the position of the central sub-pixel, xi _, is 13, the deltax of the target fixation area is 5, and the width of the leftmost incomplete area of the row, edge_distance, is 2. The display device uses the above formula 16 to obtain (13+5-2)/5=3 with a remainder of 2. The display device can then use the result 3 with a remainder of 2 to determine that the center point of the target sub-pixel is at the second position of the fourth target fixation area. For another example, the position of the central sub-pixel, xi _, is 8, the width of the target fixation area, deltax, is 5, and the width of the leftmost incomplete area of the row, edge_distance, is 2. The display device uses the above formula 16 to obtain (8+5-2)/5=2 with a remainder of 1. The display device can then use the result 2 with a remainder of 1 to determine that the center point of the target sub-pixel is at the first position of the third target fixation area.

It should be noted that the “row” in the embodiment of the present application can be understood as the “row where the target sub-pixel is located”. That is, the “position of the central sub-pixel” can be understood as the “position of the central sub-pixel in the row where the target sub-pixel is located”.

It can be understood that since the width of a target gaze point area includes multiple sub-pixels, when the width deltax of the target gaze point area is 5, the width pixel of a sub-pixel can be 1, and 0-2.5 is the first gaze point area of the target gaze point area, and 2.5-5 is the second gaze point area of the target gaze point area.

As shown in Figure 22, take the example of the target sub-pixel's center being at the first position of the third target fixation point region. If the target sub-pixel's center is at the first position, since the width of a sub-pixel is 1 pixel, the target sub-pixel is located between 0.5 and 1.5. Therefore, the target sub-pixel is completely within the first fixation point region and not within the transition region. However, the sub-pixel immediately preceding the target sub-pixel is within the transition region, i.e., it is located between 4.5 of the second target fixation point region and 0.5 of the third target fixation point region.

It can be understood that, in combination with Figure 22, when the width deltax of the target gaze point area is 5 and the width pixel of a sub-pixel is 1, the position of the center point of the target sub-pixel satisfies any of the following conditions, then the center point of the target sub-pixel is in the transition area: less than 0.5, between 2 and 3, and greater than 4.5.

Therefore, through the above technical solution, the display device of the embodiment of the present application can obtain the position of the center point of the target sub-pixel in the target gaze point area through Formula 14-Formula 16, so as to facilitate subsequent adjustment and control of the grayscale value of the target sub-pixel.

It should be understood that the display device provided in the embodiment of the present application further includes a prism disposed above the display panel. The prism may include a cylindrical prism, which is not limited in the embodiment of the present application.

In some embodiments, the placement of the prism is determined based on device parameters of the display device.

Among them, the device parameters of the display device include but are not limited to: the horizontal aperture of the prism, the arch height of the prism, the distance between the prism and the display panel, the number of sub-pixels of the display panel covered by the prism, the width of the sub-pixels of the display panel, etc.

For example, according to the principle of geometric optics lens imaging, combined with the geometric relationship of FIG. 20 and FIG. 23 , the following formulas 17 and 18 can be obtained:
z + hz = D2D1 Formula 17
hz＝D3w Formula 18

Wherein, z is the distance from the target user's eyes to the display panel, h is the distance between the prism and the display panel, D2 is the coverage width of the prism, D1 is the horizontal aperture of a prism, D3 is the coverage width of the distance between the target user's two eyes, and w is the distance between the target user's left eye and right eye, also known as the pupil distance.

When at the optimal viewing distance z, D3 = 0.5 × D2. Substituting the value of D3 into formula 18, we get:
hz＝0.5×D2w Formula 19

Solving this equation, we can get the expression for the height h of the air layer, which is Formula 20:
h＝0.5×N×subpixel×wz Formula 20

Wherein, N is the number of sub-pixels on the display panel covered by each cylindrical prism, and subpixel is the width of each sub-pixel on the display panel.

Furthermore, the horizontal aperture D1 of the prism is calculated, and the obtained value of h is substituted into the first formula to obtain the expression of the horizontal aperture D1 of the prism, that is, Formula 21:
D1＝N×subpixel×z+hz Formula 21

Furthermore, the cylindrical prism radius R is calculated. According to the refractive index formula of the lens, the expression for the cylindrical prism radius R can be obtained, namely, Formula 22:
R = (n1 - n2) × h Formula 22

Furthermore, the height L of the cylindrical prism is calculated. According to the geometric relationship in FIG24 , the expression for the height L of the cylindrical prism can be obtained, namely, Formula 23:
L=R-R2-(2D1)2 Formula 23.

Through the above design steps, we can obtain all the key parameters required for lenticular 3D display technology. These parameters constrain each other and determine the placement of the lenticular prisms, thereby ensuring that the lenticular prisms can accurately separate and direct light in different directions, thereby providing the observer with a high-quality 3D stereoscopic visual effect.

It's important to note that the formulas and parameters in the above design method are derived based on ideal geometric optics principles. In actual applications, other factors may need to be considered, such as the resolution of the display panel and the machining accuracy of the cylindrical prisms, to ensure the optimal 3D display effect.

As shown in FIG. 25 , a grayscale control method provided in an embodiment of the present application further includes the following S2501 - S2502 .

S2501. Obtain eye movement data of a target user.

In an embodiment of the present application, a display device can track the location of a target user's gaze point within a display panel using an eye tracking module. The eye tracking module can execute a calibration procedure to establish a mapping relationship between eye movement and the display screen coordinate system. When the target user gazes at the display panel, the eye tracking module can capture eye movement data in real time and calculate the corresponding coordinates of the user's gaze point on the screen based on the mapping relationship, i.e., the gaze point position.

Furthermore, the eye tracking module in the embodiment of the present application can also process the position information of both eyes to determine the three-dimensional position coordinates (x, y, z) of the center of both eyes, i.e., the center of the eyebrows, relative to the center point of the display screen. This enables the embodiment of the present application to more accurately track the target user's line of sight, improving the accuracy and reliability of human-computer interaction.

S2502: Determine the gaze point position of the target user on the display panel based on the eye movement data.

In an embodiment of the present application, the eye tracking module can be a binocular camera. In an embodiment of the present application, two cameras spaced a certain distance apart can be used as input devices. The relative positional relationship between the binocular cameras is known and serves as the basis for subsequent calculations. The binocular cameras can simultaneously capture images of the same scene and perform preprocessing on the images, including but not limited to denoising and contrast enhancement, to improve the accuracy of subsequent processing.

For example, the binocular camera uses an image matching algorithm to find corresponding feature points in the images captured by the two cameras and calculate the parallax between the feature points. Based on the parallax principle and known camera parameters (such as focal length and camera spacing), the depth information corresponding to each feature point is calculated. After obtaining the depth information in the scene, the binocular camera can combine human eye characteristics (such as pupil position and eye corner shape) to identify the human eye in the image and infer the position information of the human eye in three-dimensional space based on the depth information.

Among them, parallax refers to the position difference of the same object in two camera images. This parallax is used to reflect the distance relationship between the object and the camera; depth information is used to represent the distance of the object from the camera in three-dimensional space.

As another example, consider an RGB-D camera as an example. The RGB-D camera in this embodiment integrates multiple high-precision sensors, including a RGB camera and a time-of-flight (TOF) depth sensor.

Specifically, the RGB camera captures color image information of the scene, which contains rich visual features and details, providing a foundation for subsequent image processing and recognition. At the same time, the TOF depth sensor uses the time-of-flight principle of light pulses to quickly measure the distance from each point in the scene to the camera, thereby generating a high-precision depth image.

In this embodiment of the present application, the RGB camera and the TOF depth sensor can be precisely calibrated so that the data captured by the two can be strictly aligned in space. On this basis, image processing and computer vision algorithms are used to fuse the RGB image and the depth image to extract the human eye features in the scene. Furthermore, combined with the depth information, the RGB-D camera can accurately calculate the precise coordinate position of the human eye in three-dimensional space.

As another example, consider an infrared eye-tracking camera as an example. The infrared eye-tracking camera integrates an infrared light source, an infrared camera, and an image processor. The infrared light source emits a high-intensity infrared beam, providing stable and sufficient infrared illumination for the eye tracking process. The infrared camera captures infrared light reflected from the eye, forming a clear, high-contrast eye image, ensuring normal operation under various ambient lighting conditions. This provides high-quality visual input for subsequent image processing and data analysis.

Specifically, the infrared camera can transmit the eye image to the image processor, which then processes the eye image captured by the eye movement sensor in real time, analyzes the transmitted data, calculates the eye position coordinates of the target user, and based on the eye position coordinates and the position of the corneal reflection point, calculates the vector from the pupil center to the corneal reflection point as the gaze direction of the target user.

For each eye, a gaze direction vector is calculated and extended to the display panel. The intersection of the gaze direction vector and the display panel is the screen coordinate of the gaze point. In other words, the two-dimensional coordinates of the gaze point on the display panel are calculated based on the relationship between the gaze direction vector and the display panel position. If the gaze direction vectors of the two eyes do not completely overlap, the final gaze point coordinates are determined through weighted averaging or other algorithms.

In this embodiment of the present application, the vector from the pupil center to the corneal reflection point is used as the gaze direction.

It should be understood that the physiological characteristics of the human eye, particularly the high-definition visual capabilities of the fovea, combined with eye movement patterns, the brain's selective attention mechanism in information processing, and the natural pursuit of visual comfort, all contribute to the target user's natural tendency to focus their gaze on a specific area when viewing the screen. This focus not only improves the target user's efficiency in processing visual information but also effectively reduces visual fatigue.

Based on the above technical solution, the embodiment of the present application provides a naked eye 3D display device integrated with human eye tracking technology, and a grayscale control method (display method) thereof. The display device uses precision sensors such as high-definition cameras to capture and accurately calculate the eye position coordinates (gaze point position) of the target user in real time. Subsequently, the coordinates are immediately transmitted to the core of the display control, that is, the display control module, through the data transmission module. The display control module controls the grayscale value of the sub-pixel of the display panel based on the received coordinates.

It is understandable that, given that the coordinates are in continuous dynamic change and are accompanied by parameters such as a specific impact area, the display control module can synchronously and intelligently adjust the grayscale value of each pixel on the display panel.

Ultimately, through the precise light splitting processing of the prism grating module, the target user can enjoy an unparalleled 3D visual feast regardless of their viewing angle. This display device and grayscale control method can be applied to high-end 3D displays, such as advanced gaming monitors and virtual reality displays.

Furthermore, a glasses-free 3D display device without an eye-tracking module and a corresponding grayscale control method (display method) are provided. This display device precisely sets display parameters at a preset fixed distance and angle, ensuring that users can experience optimal 3D visual effects at specific viewing angles. This display device is particularly suitable for use in scenarios such as 3D advertising screens and 3D displays for exhibitions, providing users with an immersive visual experience.

It should be pointed out that the various embodiments of the present application can refer to each other, for example, the same or similar steps, method embodiments, system embodiments and device embodiments can refer to each other without limitation.

In the embodiment of the present application, the grayscale control device can be divided into functional modules or functional units according to the above method example. For example, each functional module or functional unit can be divided according to each function, or two or more functions can be integrated into one processing module. The above-mentioned integrated module can be implemented in the form of hardware or in the form of software functional modules or functional units. Among them, the division of modules or units in the embodiment of the present application is schematic and is only a logical functional division. In actual implementation, there may be other division methods.

As shown in Figure 26, it is a structural schematic diagram of a grayscale control device provided in an embodiment of the present application. The device is applied to a display device, and the display device includes: the display device includes: a display panel, and a processor; the display panel corresponds to multiple gaze points, and one gaze point corresponds to one area, and the area corresponding to each gaze point includes a transition area and a non-transition area.

Among them, multiple gaze points are viewpoints from which the target user gazes at the display panel from different angles; the transition area is the area between the critical lines of the areas corresponding to any two gaze points, and the non-transition area is the area other than the transition area.

The device includes a processing unit 2501 and an acquisition unit 2502. The processing unit 2501 is configured to: determine multiple gaze areas corresponding to the display panel based on the gaze point position of the target user within the display panel; the processing unit 2501 is also configured to: control the grayscale value of the sub-pixel in each gaze area among the multiple gaze areas based on the control strategy corresponding to the gaze area.

At least two of the multiple gaze areas correspond to different control strategies.

In some embodiments, the processing unit 2501 is further configured to: determine a target gaze point area based on the gaze point position; the target gaze point area is an area among multiple gaze point areas that affects the grayscale value of the sub-pixel; the target gaze point area includes a first gaze point area and a second gaze point area, and one of the first gaze point area and the second gaze point area is an area corresponding to the gaze point position, and the other is an adjacent area to the area corresponding to the gaze point position.

In some embodiments, the multiple gaze areas include a central area, which is the area at the center of the gaze point position; the processing unit 2501 is specifically configured to: for multiple sub-pixels in the central area, reduce the grayscale value of the sub-pixels in the transition area among the multiple sub-pixels, and/or increase the grayscale value of the sub-pixels in the non-transition area among the multiple sub-pixels.

In some embodiments, the processing unit 2501 is specifically configured to: determine the grayscale coefficient of the first subpixel based on the position of the center point of the first subpixel in the target gaze point area and the width of the first area, and reduce the grayscale value of the first subpixel based on the grayscale coefficient of the first subpixel and the first image grayscale value of the first subpixel in the target gaze point area.

Among them, the first sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the central area; the first area is a partial area in the target gaze point area; the first image grayscale value is used to represent the grayscale value of the first sub-pixel in the first gaze point area, or to represent the grayscale value of the first sub-pixel in the second gaze point area.

In some embodiments, the processing unit 2501 is specifically configured to: perform black processing on the grayscale value of the first sub-pixel to reduce the grayscale value of the first sub-pixel.

The first sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the central area.

In some embodiments, the processing unit 2501 is further configured to increase the grayscale value of the second sub-pixel based on the position of the center point of the second sub-pixel in the target gaze point area and the width of the target gaze point area.

The second sub-pixel is any sub-pixel in the non-transition area among the multiple sub-pixels in the central area.

In some embodiments, the processing unit 2501 is specifically configured to: determine the grayscale coefficient of the second sub-pixel based on the position of the center point of the second sub-pixel in the target gaze point area and the width of the target gaze point area, and determine the grayscale value of the second sub-pixel based on the grayscale coefficient of the second sub-pixel and the image grayscale value of the second sub-pixel in the target gaze point area, and then use the minimum value between the grayscale value of the second sub-pixel and the grayscale threshold as the increased grayscale value of the second sub-pixel.

The second image grayscale value is used to represent the grayscale value of the second sub-pixel in the first gaze point area, or is used to represent the grayscale value of the second sub-pixel in the second gaze point area.

In some embodiments, the multiple gaze areas include an edge area, which is an area adjacent to the central area; the central area is an area at the center of the gaze point position; the processing unit 2501 is specifically configured to: for multiple sub-pixels in the edge area, reduce the grayscale value of the sub-pixels in the transition area among the multiple sub-pixels.

Based on the area ratio of the third sub-pixel and the third image grayscale value of the third sub-pixel, the grayscale value of the third sub-pixel is reduced; the third image grayscale value is used to represent the image grayscale value of the third sub-pixel in the first gaze point area, or to represent the image grayscale value of the third sub-pixel in the second gaze point area.

In some embodiments, the processing unit 2501 is further configured to determine the area proportion of the third sub-pixel based on the position of the center point of the third sub-pixel in the target gaze point area and the width of the third sub-pixel.

Among them, the third sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the edge area; the area proportion of the third sub-pixel is used to characterize the proportion of the third sub-pixel in the first gaze point area, or to characterize the proportion of the third sub-pixel in the second gaze point area.

In some embodiments, the processing unit 2501 is specifically configured to:

Based on the proportion of the third sub-pixel in the first gazing point area, the proportion of the third sub-pixel in the second gazing point area, and the grayscale value of the third sub-pixel in the first gazing point area, reducing the grayscale value of the third sub-pixel; or

Based on the proportion of the third sub-pixel in the first gaze point area, the proportion of the third sub-pixel in the second gaze point area, and the grayscale value of the third sub-pixel in the second gaze point area, the grayscale value of the third sub-pixel is reduced.

In some embodiments, the processing unit 2501 is specifically configured to:

Based on the first grayscale value of the third subpixel in the first gaze point area and the second grayscale value of the third subpixel in the second gaze point area, the grayscale value of the third subpixel is reduced.

Among them, the first grayscale value is determined based on the proportion of the third sub-pixel in the first gaze point area and the image grayscale value of the third sub-pixel in the first gaze point area; the second grayscale value is determined based on the proportion of the third sub-pixel in the second gaze point area and the image grayscale value of the third sub-pixel in the second gaze point area.

In some embodiments, the processing unit 2501 is further configured to: perform black processing on the grayscale value of the sub-pixel to reduce the grayscale value of the sub-pixel.

The sub-pixel is the first sub-pixel or the third sub-pixel, the first sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the central area; the third sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the edge area.

In some embodiments, the processing unit 2501 is further configured to: increase the coverage of the transition area, and/or reduce the coverage of the non-transition area.

In some embodiments, the position of the center point of the sub-pixel in the target gaze point area can be determined by: determining the target gaze point area based on the gaze point position; determining the position of the center point of the target sub-pixel in the target gaze point area based on the position of the central sub-pixel in the row where the target sub-pixel is located.

Among them, the target sub-pixel is any one of the first sub-pixel, the second sub-pixel, and the third sub-pixel; the first sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the central area; the second sub-pixel is any sub-pixel in the non-transition area among the multiple sub-pixels in the central area; and the third sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the edge area.

In some embodiments, the processing unit 2501 is specifically configured to: obtain the width of the target gaze point area, and based on the width of the target gaze point area and the position of the central sub-pixel, determine the width of the second area in the row where the target sub-pixel is located, and then determine the position of the center point of the target sub-pixel in the target gaze point area based on the width of the second area.

The second area is an incomplete area on the left side of the row where the target sub-pixel is located;

In some embodiments, the processing unit 2501 is further configured to: obtain the offset between the central sub-pixel of the row where the target sub-pixel is located and the center point of the display panel, and determine the position of the central sub-pixel of the row where the target sub-pixel is located based on the offset and the pixel width.

In some embodiments, the multiple gaze areas include a peripheral area, which is an area other than a central area and an edge area; the central area is an area at the center of the gaze point position, and the edge area is an area adjacent to the central area; the processing unit 2501 is specifically configured to: not adjust and control the multiple sub-pixels in the peripheral area.

In some embodiments, the display device further includes a prism disposed above the display panel; the processing unit 2501 is further configured to determine a placement position of the prism based on device parameters of the display device.

In some embodiments, the device parameters of the display device include at least two of the following: the horizontal aperture of the prism; the arch height of the prism; the distance between the prism and the display panel; the number of sub-pixels of the display panel covered by the prism; and the width of the sub-pixels of the display panel.

When implemented by hardware, the acquisition unit 2502 in the embodiment of the present application can be integrated into the communication interface, and the processing unit 2501 can be integrated into the processor. The specific implementation is shown in FIG26 .

Figure 27 shows another possible structural diagram of the grayscale control device involved in the above embodiment. The communication device includes: a processor 2602 and a communication interface 2603. The processor 2602 is used to control and manage the operation of the device, for example, executing the steps performed by the processing unit 2501 and/or performing other processes of the technology described herein. The communication interface 2603 is used to support communication between the device and other network entities, for example, executing the steps performed by the acquisition unit 2502. The device may also include a memory 2601 and a bus 2604. The memory 2601 is used to store program code and data of the device.

Among them, the memory 2601 can be a memory in the device, etc., and the memory may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a read-only memory, a flash memory, a hard disk or a solid-state drive; the memory may also include a combination of the above types of memory.

The processor 2602 may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure herein. The processor may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. The processor may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure herein. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, or a combination of a DSP and a microprocessor.

Bus 2604 may be an Extended Industry Standard Architecture (EISA) bus, for example. Bus 2604 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, FIG26 shows only one thick line, but this does not indicate that there is only one bus or only one type of bus.

The device in FIG26 may also be a chip, which includes one or more (including two) processors 2602 and a communication interface 2603 .

Optionally, the chip further includes a memory 2605, which may include a read-only memory and a random access memory, and provides operation instructions and data to the processor 2602. A portion of the memory 2605 may also include a non-volatile random access memory (NVRAM).

In some embodiments, the memory 2605 stores the following elements, execution modules or data structures, or a subset thereof, or an extended set thereof.

In the embodiment of the present application, the corresponding operation is performed by calling the operation instruction stored in the memory 2605 (the operation instruction may be stored in the operating system).

Some embodiments of the present disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium), which stores computer program instructions. When the computer program instructions are executed on a computer (e.g., a receiving node), the computer executes a synchronization method as in any of the above embodiments.

Exemplarily, the above-mentioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks or magnetic tapes, etc.), optical disks (e.g., CD (Compact Disk), DVD (Digital Versatile Disk), etc.), smart cards and flash memory devices (e.g., EPROM (Erasable Programmable Read-Only Memory), cards, sticks or key drives, etc.). The various computer-readable storage media described in the present disclosure may represent one or more devices and/or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing and/or carrying instructions and/or data.

Some embodiments of the present disclosure further provide a computer program product, for example, stored on a non-transitory computer-readable storage medium. The computer program product includes computer program instructions that, when executed on a computer (e.g., a receiving node), cause the computer to perform the synchronization method described in the above embodiments.

Some embodiments of the present disclosure further provide a computer program. When the computer program is executed on a computer (eg, a receiving node), the computer program enables the computer to execute the synchronization method of the above embodiments.

The beneficial effects of the above-mentioned computer-readable storage medium, computer program product and computer program are the same as the beneficial effects of the synchronization method of some of the above-mentioned embodiments, and will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that a person skilled in the art can conceive within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims (24)

A display device, wherein the display device comprises: a display panel and a processor; The processor is configured to: determine a plurality of gaze areas corresponding to the display panel based on a gaze point position of a target user within the display panel; The processor is further configured to: for each gaze area among the plurality of gaze areas, control the grayscale value of the sub-pixel in the gaze area based on the control strategy corresponding to the gaze area; At least two of the multiple gaze areas correspond to different control strategies. The display device according to claim 1, wherein the display panel corresponds to a plurality of gaze points, each gaze point corresponds to a region, and the region corresponding to each gaze point includes a transition region and a non-transition region; Among them, the multiple gaze points are the viewpoints of the target user looking at the display panel from different angles; the transition area is the area between the critical lines of the areas corresponding to any two gaze points, and the non-transition area is the area outside the transition area. The display device according to claim 2, wherein the processor is further configured to: Based on the gaze point position, a target gaze point area is determined; the target gaze point area is an area among multiple gaze point areas that affects the grayscale value of the sub-pixel; the target gaze point area includes a first gaze point area and a second gaze point area, one of the first gaze point area and the second gaze point area is an area corresponding to the gaze point position, and the other is an adjacent area to the area corresponding to the gaze point position. The display device according to claim 3, wherein the plurality of gaze areas include a central area, the central area being an area where the gaze point is located; The processor is specifically configured to: For the multiple sub-pixels in the central area, the grayscale values of the sub-pixels in the transition area among the multiple sub-pixels are reduced, and/or the grayscale values of the sub-pixels in the non-transition area among the multiple sub-pixels are increased. The display device according to claim 4, wherein the processor is specifically configured to: determining a grayscale coefficient of a first subpixel based on a position of a center point of the first subpixel in the target gaze point area and a width of the first area; the first subpixel being any subpixel in the transition area among the multiple subpixels in the central area; and the first area being a portion of the target gaze point area; Based on the grayscale coefficient of the first sub-pixel and the first image grayscale value of the first sub-pixel in the target gaze point area, the grayscale value of the first sub-pixel is reduced; the first image grayscale value is used to represent the grayscale value of the first sub-pixel in the first gaze point area, or to represent the grayscale value of the first sub-pixel in the second gaze point area. The display device according to claim 4 or 5, wherein the processor is specifically configured to: increasing the grayscale value of the second sub-pixel based on a position of a center point of the second sub-pixel in the target gaze point area and a width of the target gaze point area; The second sub-pixel is any sub-pixel in the non-transition area among the multiple sub-pixels in the central area. The display device according to claim 6, wherein the processor is further configured to: determining a grayscale coefficient of the second sub-pixel based on a position of a center point of the second sub-pixel in the target gaze point area and a width of the target gaze point area; determining a grayscale value of the second subpixel based on a grayscale coefficient of the second subpixel and a second image grayscale value of the second subpixel in the target gaze point area; the second image grayscale value being used to represent a grayscale value of the second subpixel in the first gaze point area, or being used to represent a grayscale value of the second subpixel in the second gaze point area; The minimum value between the grayscale value of the second sub-pixel and the grayscale thresholds of the plurality of sub-pixels is used as the increased grayscale value of the second sub-pixel. The display device according to claim 3, wherein the plurality of gaze areas include an edge area, the edge area being an area adjacent to a central area; the central area being an area where the gaze point is located; The processor is specifically configured to: For a plurality of sub-pixels in the edge region, the grayscale values of the sub-pixels in the transition region among the plurality of sub-pixels are reduced. The display device according to claim 8, wherein the processor is specifically configured to: reduce the grayscale value of the third sub-pixel based on the area ratio of the third sub-pixel and the third image grayscale value of the third sub-pixel; the third image grayscale value is used to represent the image grayscale value of the third sub-pixel in the first gaze point area, or to represent the image grayscale value of the third sub-pixel in the second gaze point area. The display device according to claim 9, wherein the processor is further configured to: Based on the position of the center point of the third sub-pixel in the target gaze point area and the width of the third sub-pixel, the area share of the third sub-pixel is determined; the third sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the edge area; the area share of the third sub-pixel is used to characterize the proportion of the third sub-pixel in the first gaze point area, or to characterize the proportion of the third sub-pixel in the second gaze point area. The display device according to claim 9, wherein the processor is specifically configured to: Based on the proportion of the third sub-pixel in the first gazing point area, the proportion of the third sub-pixel in the second gazing point area, and the grayscale value of the third sub-pixel in the first gazing point area, reducing the grayscale value of the third sub-pixel; or Based on the proportion of the third sub-pixel in the first gaze point area, the proportion of the third sub-pixel in the second gaze point area, and the grayscale value of the third sub-pixel in the second gaze point area, the grayscale value of the third sub-pixel is reduced. The display device according to claim 9, wherein the processor is specifically configured to: reducing the grayscale value of the third subpixel based on a first grayscale value of the third subpixel in the first gazing point area and a second grayscale value of the third subpixel in the second gazing point area; Among them, the first grayscale value is determined based on the proportion of the third sub-pixel in the first gaze point area and the image grayscale value of the third sub-pixel in the first gaze point area; the second grayscale value is determined based on the proportion of the third sub-pixel in the second gaze point area and the image grayscale value of the third sub-pixel in the second gaze point area. The display device according to claim 4 or 8, wherein the processor is further configured to: The grayscale value of the sub-pixel is blackened to reduce the grayscale value of the sub-pixel; the sub-pixel is the first sub-pixel or the third sub-pixel, the first sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the central area; the third sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the edge area. The display device according to any one of claims 2 to 13, wherein the processor is further configured to: Increase the coverage of the transition area, and/or decrease the coverage of the non-transition area. The display device according to any one of claims 4 to 6 or any one of claims 8 to 12, wherein the position of the center point of the sub-pixel in the target gaze point area can be determined by: Determining a target gaze point area according to the gaze point position; Determining the position of the center point of the target sub-pixel in the target gaze point area based on the position of the center sub-pixel of the row where the target sub-pixel is located; Among them, the target sub-pixel is any one of the first sub-pixel, the second sub-pixel, and the third sub-pixel; the first sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the central area; the second sub-pixel is any sub-pixel in the non-transition area among the multiple sub-pixels in the central area; and the third sub-pixel is any sub-pixel in the transition area among the multiple sub-pixels in the edge area. The display device according to claim 15, wherein the processor is specifically configured to: Obtaining the width of the target gaze point area; Determining, based on the width of the target gaze point area and the position of the central sub-pixel, a width of a second area in the row where the target sub-pixel is located; the second area is an incomplete area to the left of the row where the target sub-pixel is located; The position of the center point of the target sub-pixel in the target gaze point area is determined according to the width of the second area. The display device according to claim 15 or 16, wherein the processor is further configured to: Obtaining an offset between a central sub-pixel in a row where the target sub-pixel is located and a center point of the display panel; The position of the central sub-pixel in the row where the target sub-pixel is located is determined based on the offset and the sub-pixel width. The display device according to any one of claims 2 to 17, wherein the plurality of gaze areas include a peripheral area, the peripheral area being an area excluding a central area and the edge area; the central area being an area at a center of the gaze point position, and the edge area being an area adjacent to the central area; The processor is further configured to: No adjustment control is performed on the plurality of sub-pixels in the peripheral area. The display device according to any one of claims 1 to 18, wherein the display device further comprises a prism disposed above the display panel; The processor is further configured to: The placement position of the prism is determined based on the device parameters of the display device. The display device according to claim 19, wherein the device parameters of the display device include at least two of the following: The horizontal aperture of the prism; the arch height of the prism; the distance between the prism and the display panel; The number of sub-pixels of the display panel covered by the prism; The width of a sub-pixel of the display panel. A grayscale control method, wherein the method comprises: determining a plurality of gaze areas corresponding to the display panel based on a gaze point position of a target user within the display panel; For each of the plurality of gaze areas, controlling the grayscale value of a sub-pixel in the gaze area based on a control strategy corresponding to the gaze area; At least two of the multiple gaze areas correspond to different control strategies. A grayscale control device, wherein the device comprises: a processing unit; The processing unit is configured to: determine a plurality of gaze areas corresponding to the display panel based on a gaze point position of a target user within the display panel; The processing unit is further configured to: for each of the plurality of gaze areas, control the grayscale value of the sub-pixels in the gaze area based on a control strategy corresponding to the gaze area; At least two of the multiple gaze areas correspond to different control strategies. A computer-readable storage medium, wherein instructions are stored in the computer-readable storage medium. When a computer executes the instructions, the computer executes the grayscale control method according to claim 21. A computer program product, wherein the computer program product comprises instructions, and when the instructions are executed on a computer, the computer performs the grayscale control method according to claim 21.