WO2019209013A1 - 확장현실 영상처리 방법 및 이를 위한 장치 - Google Patents
확장현실 영상처리 방법 및 이를 위한 장치 Download PDFInfo
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- WO2019209013A1 WO2019209013A1 PCT/KR2019/004917 KR2019004917W WO2019209013A1 WO 2019209013 A1 WO2019209013 A1 WO 2019209013A1 KR 2019004917 W KR2019004917 W KR 2019004917W WO 2019209013 A1 WO2019209013 A1 WO 2019209013A1
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T19/00—Manipulating 3D models or images for computer graphics
- G06T19/006—Mixed reality
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T15/00—3D [Three Dimensional] image rendering
- G06T15/10—Geometric effects
- G06T15/20—Perspective computation
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T19/00—Manipulating 3D models or images for computer graphics
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
- H04N13/106—Processing image signals
- H04N13/111—Transformation of image signals corresponding to virtual viewpoints, e.g. spatial image interpolation
- H04N13/117—Transformation of image signals corresponding to virtual viewpoints, e.g. spatial image interpolation the virtual viewpoint locations being selected by the viewers or determined by viewer tracking
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/366—Image reproducers using viewer tracking
- H04N13/383—Image reproducers using viewer tracking for tracking with gaze detection, i.e. detecting the lines of sight of the viewer's eyes
Definitions
- the present invention relates to an extended reality image processing method and an apparatus therefor, and more particularly, to processing an image by applying a different resolution for each region corresponding to a user's gaze.
- the present invention relates to a technology capable of providing an enhanced reality video service of improved image quality.
- Extended Reality is a technology that covers both Augmented Reality (AR), Virtual Reality (VR), and Mixed Reality (MR). While augmented reality and augmented reality are currently separate experiences, the two technologies share many technical elements, and these technologies ultimately integrate innovative new technologies into wearable devices that support both augmented and virtual reality. Will be provided.
- One of the main reasons for the delay in the expansion of content based on augmented reality is that the display quality of the content is inferior to that of the fixed view of the non-interactive display.
- the screen content quality of the present extended reality technology experienced by the consumer is inferior to that of the fixed view method.
- next-generation content such as UHD resolution and HDR
- expanded reality content is characterized by picture resolution, insufficient frame rate and Constrained by basic issues such as flickering.
- the quality of the expanded reality content is currently limited by the resolution.
- users are accustomed to at least 2K HD resolution, so they expect better quality (immersed quality) resolution in augmented reality content.
- An object of the present invention is to improve the resolution and quality of augmented reality content.
- an object of the present invention is to prevent unnecessary load in the expanded reality image processing by varying the image processing level according to the user's gaze movement.
- an object of the present invention is to provide a service efficiently by providing a high-resolution image based on the user's line of sight without spending a lot of resources to process images other than the line of sight.
- a method for processing an extended reality image comprising: detecting a direction of a line of sight of a user wearing an extension reality based image processing apparatus; Performing reference resolution image processing on the first area corresponding to the direction of the gaze; And performing low resolution image processing corresponding to a second average resolution lower than a first average resolution corresponding to the reference resolution image processing on the second area surrounding the first area.
- the second area may be divided into a plurality of areas, and as the area farther from the center of the first area, the average resolution may be lower.
- the extended reality image processing method may further include resetting the first area and the second area based on the changed direction of the gaze when the direction of the gaze changes.
- a range of the first area and the second area may be set based on a viewing angle based on the direction of the line of sight.
- the viewing angle may correspond to at least one of the horizontal viewing angle and the vertical viewing angle.
- the extended reality image processing method may further include combining the result of performing the reference resolution image processing with the result of performing the low resolution image processing and displaying the result to the user.
- the first average resolution when the direction of the line of sight changes is slower than the first average resolution when the rate of the line of sight changes.
- the second average resolution when the speed at which the direction of the gaze is changed may be higher than the second average resolution when the speed at which the direction of the gaze is changed is fast.
- the viewing angle with respect to the second area may be greater than the viewing angle with respect to the first area.
- the range in which the speed of changing the direction of the gaze is slow may be wider than the range in which the speed of changing the direction of the gaze is fast.
- the extended reality image processing apparatus may detect a direction of a line of sight of a user wearing the expanded reality based image processing apparatus and may refer to a reference resolution with respect to a first area corresponding to the direction of the line of sight.
- a processor configured to perform image processing and perform low resolution image processing corresponding to a second average resolution lower than a first average resolution corresponding to the reference resolution image processing on a second area surrounding the first area; And a memory storing the first average resolution and the second average resolution.
- the second area may be divided into a plurality of areas, and as the area farther from the center of the first area, the average resolution may be lower.
- the processor may further include resetting the first area and the second area based on the changed direction of the gaze when the direction of the gaze changes.
- a range of the first area and the second area may be set based on a viewing angle based on the direction of the line of sight.
- the viewing angle may correspond to at least one of the horizontal viewing angle and the vertical viewing angle.
- the processor may further include combining the result of performing the reference resolution image processing with the result of performing the low resolution image processing and displaying the result to the user.
- the first average resolution when the direction of the line of sight changes is slower than the first average resolution when the rate of the line of sight changes.
- the second average resolution when the speed at which the direction of the gaze is changed may be higher than the second average resolution when the speed at which the direction of the gaze is changed is fast.
- the viewing angle with respect to the second area may be greater than the viewing angle with respect to the first area.
- the range in which the speed of changing the direction of the gaze is slow may be wider than the range in which the speed of changing the direction of the gaze is fast.
- the resolution and quality of the augmented reality content can be improved.
- the present invention can prevent unnecessary loads in the expanded reality image processing by changing the image processing level according to the user's gaze movement.
- the present invention can provide a high-resolution image based on the line of sight of the user to efficiently provide a service without consuming a large amount of resources for processing images other than the line of sight.
- FIG. 1 is a diagram illustrating an extended reality image processing system according to an exemplary embodiment of the present invention.
- FIG. 2 is a flowchart illustrating an augmented reality image processing method according to an embodiment of the present invention.
- FIG 3 illustrates an example of a first region and a second region according to the present invention.
- FIG. 4 is a diagram illustrating an example of dividing a second region into a plurality of regions according to the present invention.
- 5 to 6 are diagrams showing an example of a viewing angle according to the present invention.
- 7 to 8 are diagrams showing an example of a relationship graph between the range and the direction change speed of the line of sight according to the present invention.
- 9 to 10 are diagrams showing an example of a relationship graph between the average resolution and the direction change speed of the gaze according to the present invention.
- HMD head mounted display
- FIG. 12 is a block diagram illustrating an apparatus for expanding reality image processing, according to an exemplary embodiment.
- FIG. 1 is a diagram illustrating an extended reality image processing system according to an exemplary embodiment of the present invention.
- an extended reality image processing system includes an extended reality (XR) image processing apparatus according to the present invention, or an HMD (Head Mounted) which is a kind of extended reality image processing apparatus.
- XR extended reality
- HMD Head Mounted
- a first area 111 and a second area 112 may be set according to the gaze directions 110, 120, and 130 of the user 101 wearing the display to provide an extended reality service.
- Extended Reality refers to a technology that covers both Augmented Reality (AR), Virtual Reality (VR), and Mixed Reality (MR). It can be provided as a new type of wearable device supporting both virtual reality and virtual reality.
- AR Augmented Reality
- VR Virtual Reality
- MR Mixed Reality
- These augmented reality technologies can be applied to transform a variety of industries and everyday consumer experiences, from manufacturing, healthcare, education and retail.
- the Augmented Reality technology allows smartphones, mobile AR headsets and AR glasses to be integrated into a single XR glass, enabling both AR and VR to be used as XR glasses.
- the extended reality technology may be applied so that the lenses of the glasses become opaque and switch to the VR mode.
- the HMD 100 illustrated in FIG. 1 corresponds to an enlarged reality image processing apparatus that may be worn by a user, and is not limited to the form illustrated in FIG. 1.
- the extended reality image processing apparatus may mean the HMD 100 itself shown in FIG. 1, or the extended reality image processing may be performed to provide an extended reality service in the HMD 100. It can also mean some element that performs.
- an extension reality image processing apparatus according to an exemplary embodiment of the present invention is provided inside the HMD 100.
- the direction of the gaze of the user 101 may be sensed through the expanded reality image processing apparatus.
- the gaze directions 110, 120, and 130 mean a direction that the user 101 directly looks at, and may be detected based on various sensors capable of detecting the gaze of the user.
- a direction sensor, a gyro sensor, and an eye sensor may be used to detect the direction of the gaze that the user is looking at.
- the apparatus for expanding reality image processing according to the present invention may perform reference resolution image processing on the first region 111 corresponding to the gaze direction 110. have.
- the apparatus for augmented reality image processing may have a low resolution corresponding to a second average resolution lower than a first average resolution corresponding to reference resolution image processing with respect to the second region 112 surrounding the first region 111. Image processing can be performed.
- the user 101 may increase the average resolution of the first area 111 corresponding to the gaze direction 110 of the user 101 by higher than the average resolution of the first area 112, which is a peripheral area of the gaze direction 110.
- the quality of the extended reality content can be improved.
- the reference resolution image processing may be applying the first resolution to the entire first area
- the low resolution image processing may be applying the second resolution lower than the first resolution to the entire second area
- the second area 112 may be divided into a plurality of areas, and the average resolution may be lower as the area is farther from the center of the first area 111.
- the low resolution image processing may divide the second area into a plurality of detail areas, and apply different resolutions to the detail areas.
- the reference resolution image processing may also divide the first area into a plurality of detail areas, and apply different resolutions to the detail areas.
- the ranges for the first area and the second area may be set based on the viewing angle based on the eye gaze direction of the user 101.
- the viewing angle may correspond to at least one of the horizontal viewing angle and the vertical viewing angle.
- the viewing angle with respect to the second area may be greater than the viewing angle with respect to the first area.
- the apparatus for expanding reality image processing according to the present disclosure may reset the first area and the second area based on the changed direction of the line of sight. have.
- the direction of the gaze of the user 101 changes from the gaze direction 110 to the gaze direction 130.
- the first region and the second region may also be reset to correspond to the gaze direction 130 in the gaze direction 110, respectively.
- the first average resolution when the direction of the line of sight changes is slower than the first average resolution when the rate of the line of sight changes.
- the second average resolution when the speed at which the direction of the gaze changes is higher than the second average resolution when the speed at which the direction of the gaze changes is high.
- the user 101 may determine that the user 101 does not attempt to view a part of the expanded reality image but simply reticulates or changes the gaze direction. Therefore, in such a case, it is possible to provide an extended reality service more efficiently by processing so that no load is generated through unnecessary high quality image processing.
- the direction of the gaze of the user 101 when the direction of the gaze of the user 101 changes, the direction of the gaze changes in the range of the first area and the second area when the speed at which the gaze direction changes is slow. It may be wider than the range of the first region and the second region when the speed is fast.
- the apparatus for expanding reality image processing according to the present invention may display the result of performing the reference resolution image processing and the result of performing the low resolution image processing to the user 101. That is, the image processing result of the first area and the image processing result of the second area may be combined and displayed to the user 101.
- the augmented reality image processing apparatus may be provided with a separate display module or provide an image processing result combined with a display module provided in the HMD 100 to display.
- Such an extended reality image processing system may prevent unnecessary loads from occurring in an unnecessary extended reality image processing by changing an image processing level according to a user's gaze movement.
- FIG. 2 is a flowchart illustrating an augmented reality image processing method according to an embodiment of the present invention.
- a direction of a line of sight of a user wearing an expanded reality based image processing apparatus is detected (S210).
- the expanded reality based image processing apparatus displays an expanded reality image including augmented reality (AR), virtual reality (VR), and mixed reality (MR).
- AR augmented reality
- VR virtual reality
- MR mixed reality
- the device it is possible to display a stereoscopic extended reality image corresponding to 360 degrees.
- Extended Reality refers to a technology that covers both Augmented Reality (AR), Virtual Reality (VR), and Mixed Reality (MR). It can be provided as a new type of wearable device supporting both virtual reality and virtual reality.
- AR Augmented Reality
- VR Virtual Reality
- MR Mixed Reality
- These augmented reality technologies can be applied to transform a variety of industries and everyday consumer experiences, from manufacturing, healthcare, education and retail.
- the Augmented Reality technology allows smartphones, mobile AR headsets and AR glasses to be integrated into a single XR glass, enabling both AR and VR to be used as XR glasses.
- the extended reality technology may be applied so that the lenses of the glasses become opaque and switch to the VR mode.
- the expanded reality based image processing apparatus detects the direction of the user's gaze It is possible to display the expanded reality image corresponding to the direction of.
- the direction of the gaze may correspond to the center coordinate of the field of view of the user. That is, the direction of the line of sight may be sensed based on the point that is the center of the entire field of view seen by the eyes of the user.
- the direction of the user's gaze may be detected based on a direction sensor or a gyro sensor.
- the direction sensor and the gyro sensor are directly connected inside the expansion reality based image processing apparatus according to the present invention to detect the direction of the gaze or sense the direction of the gaze outside the expansion reality based image processing apparatus.
- Related information may be provided to an extended reality based image processing apparatus based on wired or wireless communication.
- the direction sensor or the gyro sensor may continuously detect the direction of the gaze while the extended reality based image processing apparatus is operating.
- the user's pupil may be detected to detect the direction of the user's gaze.
- the direction of the gaze of the user may be detected by detecting the pupil of the user using the pupil detection sensor provided in the image processing apparatus based on the expanded reality.
- the manner of detecting the direction of the user's gaze is not limited to a specific method, and may be selected in consideration of various aspects such as the efficiency of the system and the suitability of the sensor.
- reference resolution image processing is performed on the first area corresponding to the direction of the gaze (S220).
- the first area may correspond to an area that the user focuses on, among areas of the expanded reality space that enters the user's view. That is, the image level or the image quality of the first area may be a criterion for the user to determine the image quality of the augmented reality service.
- the reference resolution image processing may be to perform the image processing at a higher resolution than the image processing for the remaining regions other than the first region of the entire area of the expanded reality image.
- image processing is performed at HD resolution when basic image processing of the entire area of the extended reality space corresponding to 360 degrees is performed.
- image processing corresponding to a higher resolution such as 2K, 4K, or 8K, which is higher than this, may be performed. That is, although the entire image of the extended reality space is displayed in 1K, the first area currently viewed by the user is displayed in high resolution such as 2K, 4K, or 8K.
- a higher resolution such as 2K, 4K, or 8K
- the entire area of the extended reality space corresponding to 360 degrees may be image-processed and displayed, but in order to provide the entire area as a high-definition image, the load is large when the image is processed. It may not be suitable for the device.
- the present invention provides a high quality extended reality service by performing a high quality image processing only on a region corresponding to the direction of the user's gaze among all the areas corresponding to the extended reality space, but does not have a large expansion reality to be loaded during the image processing.
- a high quality extended reality service by performing a high quality image processing only on a region corresponding to the direction of the user's gaze among all the areas corresponding to the extended reality space, but does not have a large expansion reality to be loaded during the image processing.
- the extended reality image processing method is a low resolution image processing corresponding to a second average resolution lower than the first average resolution corresponding to the reference resolution image processing for the second area surrounding the first area Perform (S230).
- the reference resolution image processing may be applying the first resolution to the entire first area
- the low resolution image processing may be applying the second resolution lower than the first resolution to the entire second area.
- the first resolution is at the 4K level
- the second resolution may correspond to the 1K level.
- the second region may correspond to a partial region surrounding the first region of the entire region of the expanded reality space corresponding to 360 degrees. That is, when the direction of the line of sight of the user is toward the first area, it may be an area included in the field of view of the user.
- the second region 320 may be set to surround the first region.
- the low resolution image processing may divide the second area into a plurality of detail areas, and apply different resolutions to the detail areas.
- the second area may be divided into a plurality of areas, and as the area farther from the center of the first area, the average resolution may be lower.
- the second region surrounding the first region 410 is divided into three divided second regions 420, 430, and 440.
- the average resolution of the divided second area 420 nearest to the center of the first area 410 may be higher than the remaining divided second areas 430 and 440.
- the average resolution of the divided second area 440 furthest from the center of the first area 410 may be lower than the remaining divided second areas 420 and 430.
- the resolution of the first region 410 is 8K
- the resolution of the divided second region 420 nearest to the center of the first region 410 is 4K
- the divided second region 430 is used.
- the resolution of 2K may be set so that the resolution of the divided second region 440 furthest from the center of the first region 410 is image processed corresponding to 1K such that there is no discomfort in the resolution change between the regions.
- the reference resolution image processing may also divide the first area into a plurality of detail areas, and apply different resolutions to the detail areas.
- the first area may be divided into a plurality of areas, and the average resolution may be lower as the area is farther from the center of the first area.
- ranges of the first area and the second area may be set based on the viewing angle based on the direction of the line of sight.
- the viewing angle may correspond to at least one of the horizontal viewing angle and the vertical viewing angle.
- the viewing angle with respect to the second area may be greater than the viewing angle with respect to the first area.
- the left and right ranges of the first area 510 may correspond to the first horizontal viewing angle 511 based on the user's gaze direction 530.
- the first horizontal viewing angle 511 may be changed in consideration of the location of the expanded reality image.
- the left and right ranges of the second area 520 may correspond to the second horizontal viewing angle 512 based on the user's gaze direction 530.
- the user's gaze direction 530 is equally applied to the first area 510 or the second area 520, the area according to the difference between the first horizontal viewing angle 511 and the second horizontal viewing angle 512. Liver ratios may vary.
- the second horizontal viewing angle 512 may also vary the left and right ranges of the second region according to the distance between the user's eye and the expanded reality image. In consideration, the second horizontal viewing angle 512 may be changed.
- the upper and lower ranges of the first region 610 may correspond to the first vertical viewing angle 611 based on the user's eyeline direction 630.
- the first vertical viewing angle 611 may be changed in consideration of the location of the expanded reality image.
- the upper and lower ranges of the second area 620 may correspond to the second vertical viewing angle 612 based on the user's eyeline direction 630.
- the area depends on the difference between the first vertical viewing angle 611 and the second vertical viewing angle 612. Liver ratios may vary.
- the second vertical viewing angle 612 may also change the upper and lower ranges of the second region according to the distance between the user's eye and the expanded reality image, thereby forming a position where the expanded reality image is formed. In consideration, the second vertical viewing angle 612 may be changed.
- the range when the speed of changing the direction of the gaze is slow may be wider than the range when the speed of changing the direction of the gaze is fast.
- the relationship between the speed at which the direction of the line of sight changes and the range of the first region and the second region may be inversely proportional to that shown in FIG. 7. That is, the faster the speed at which the line of sight changes, the narrower the range of the first region and the second region.
- the range of the first region and the second region may be narrowed and displayed.
- the relationship between the speed at which the direction of the eyes changes and the range of the first region and the second region may correspond to an inverse relationship as shown in FIG. 8.
- the relationship between the speed at which the direction of the eyeline changes and the range of the first region and the second region corresponds to an inverse relationship, but may not be limited to a specific inverse function.
- the first area and the second area are reset based on the changed direction of the gaze.
- the direction of the line of sight of the user 101 illustrated in FIG. 1 may be assumed to change from 110 corresponding to the left side to 130 corresponding to the right side.
- the first area and the second area may be set to correspond to the gaze direction 110, and may be reset to correspond to the gaze direction 130 as the direction of the gaze changes.
- the reset first region may be processed with reference resolution image
- the reset second region may be processed with low resolution image
- the first average resolution when the direction of the line of sight changes is slower than the first average resolution when the rate of the line of sight changes.
- the second average resolution when the speed at which the direction of the gaze changes is higher than the second average resolution when the speed at which the direction of the gaze changes is high.
- the relationship between the speed at which the direction of the eyeline changes and the first average resolution or the second average resolution may be inversely proportional to that shown in FIG. 9. That is, the faster the speed at which the line of sight changes, the lower the first average resolution or the second average resolution.
- the image processing may be performed by lowering the first average resolution or the second average resolution.
- the relationship between the speed at which the direction of the eyeline changes and the first average resolution or the second average resolution may correspond to an inverse relationship as shown in FIG. 10.
- the relationship between the speed at which the direction of the eyeline changes and the first average resolution or the second average resolution corresponds to an inverse relationship, but may not be limited to a specific inverse function.
- the extended reality image processing method combines the result of performing the reference resolution image processing with the result of performing the low resolution image processing and displays the result to the user.
- the extended reality image may be displayed by combining the result of performing the reference resolution image processing and the result of performing the low resolution image processing using a display module provided in the expansion reality based image processing apparatus.
- the result of performing the reference resolution image processing and the result of performing the low resolution image processing through a separate display device or display module connected to the image processing apparatus, which is located outside the expanded reality based image processing apparatus. It can also display augmented reality images.
- the extended reality image processing method can transmit and receive information necessary for the extended reality image processing.
- information about the direction of the gaze may be received from the direction sensor or the acceleration sensor, or the expanded reality image data processed by the display module may be provided.
- the extended reality image processing method according to an embodiment of the present invention separates various information generated in the process for processing the expanded reality image according to an embodiment of the present invention Can be stored in the storage module.
- the resolution and the quality of the expanded reality content may be improved.
- HMD head mounted display
- the HMD 1100 may actually display the expanded reality image to a user, a display module 1110, the expanded reality image processing apparatus 1120, and the user according to the present invention. It may include a sensor module 1130 that can detect the direction of the eye of the.
- the sensor module 1130 may detect the direction of the user's gaze and provide it to the expanded reality image processing apparatus 1120.
- the expanded reality image processing apparatus 1120 may set the first region and the second region according to the present invention based on the direction of the user's gaze.
- the ranges for the first area and the second area may be set based on the viewing angle based on the direction of the line of sight.
- the expanded reality image processing apparatus 1120 performs the reference resolution image processing on the first area corresponding to the direction of the gaze, and applies the reference resolution image processing on the second area surrounding the first area. After performing the low resolution image processing corresponding to the second average resolution lower than the first average resolution, the image processing results are combined and transmitted to the display module 1110, and the display module 1110 to the user wearing the HMD 1100. It can display augmented reality image.
- the sensor module 1130 detects this and expands the speed at which the changed direction of the gaze of the user and the direction of the gaze change. ) Can be provided.
- the expanded reality image processing apparatus 1120 performs the reference resolution image processing corresponding to the first average resolution considering the speed at which the direction of the eye changes, and at the second average resolution considering the speed at which the direction of the eye changes. Correspondingly, low resolution image processing can be performed.
- the extended reality image processing apparatus 1120 according to an embodiment of the present invention is included in the HMD 1100.
- this is only an example and is not limited thereto. Do not. That is, the display and the sensing may be performed by the expanded reality image processing apparatus itself according to the present invention.
- FIG. 12 is a block diagram illustrating an apparatus for expanding reality image processing, according to an exemplary embodiment.
- an apparatus for expanding reality image processing includes a communication unit 1210, a processor 1220, and a memory 1230.
- the communication unit 1210 transmits and receives information necessary for the extended reality image processing.
- the communication unit 1210 may request and receive information related to the direction of the gaze from the direction sensor or the acceleration sensor, or may provide expanded reality image data processed by the display module.
- the processor 1220 detects the direction of the gaze of the user wearing the augmented reality image processing apparatus.
- the expanded reality based image processing apparatus displays an expanded reality image including augmented reality (AR), virtual reality (VR), and mixed reality (MR).
- AR augmented reality
- VR virtual reality
- MR mixed reality
- the device it is possible to display a stereoscopic extended reality image corresponding to 360 degrees.
- Extended Reality refers to a technology that covers both Augmented Reality (AR), Virtual Reality (VR), and Mixed Reality (MR). It can be provided as a new type of wearable device supporting both virtual reality and virtual reality.
- AR Augmented Reality
- VR Virtual Reality
- MR Mixed Reality
- These augmented reality technologies can be applied to transform a variety of industries and everyday consumer experiences, from manufacturing, healthcare, education and retail.
- the Augmented Reality technology allows smartphones, mobile AR headsets and AR glasses to be integrated into a single XR glass, enabling both AR and VR to be used as XR glasses.
- the extended reality technology may be applied so that the lenses of the glasses become opaque and switch to the VR mode.
- the expanded reality image processing apparatus detects the direction of the user's gaze and corresponds to the direction of the gaze. To display the augmented reality image.
- the direction of the gaze may correspond to the center coordinate of the field of view of the user. That is, the direction of the line of sight may be sensed based on the point that is the center of the entire field of view seen by the eyes of the user.
- the direction of the user's gaze may be detected based on a direction sensor or a gyro sensor.
- the direction sensor and the gyro sensor are directly connected in the inside of the expanded reality image processing apparatus according to the present invention to detect the direction of the gaze or detect the direction of the gaze from the outside of the extended reality image processing apparatus and based on wired and wireless communication
- the relevant information may be provided to the extended reality based image processing apparatus.
- the direction sensor or the gyro sensor may continuously detect the direction of the gaze while the extended reality image processing apparatus is operating.
- the user's pupil may be detected to detect the direction of the user's gaze.
- the direction of the gaze of the user may be detected by detecting the pupil of the user using the pupil detection sensor provided in the expanded reality image processing apparatus according to the present invention.
- the manner of detecting the direction of the user's gaze is not limited to a specific method, and may be selected in consideration of various aspects such as the efficiency of the system and the suitability of the sensor.
- the processor 1220 performs reference resolution image processing on the first area corresponding to the direction of the line of sight.
- the first area may correspond to an area that the user focuses on, among areas of the expanded reality space that enters the user's view. That is, the image level or the image quality of the first area may be a criterion for the user to determine the image quality of the augmented reality service.
- the reference resolution image processing may be to perform the image processing at a higher resolution than the image processing for the remaining regions other than the first region of the entire area of the expanded reality image.
- image processing is performed at HD resolution when basic image processing of the entire area of the extended reality space corresponding to 360 degrees is performed.
- image processing corresponding to a higher resolution such as 2K, 4K, or 8K, which is higher than this, may be performed. That is, although the entire image of the extended reality space is displayed in 1K, the first area currently viewed by the user is displayed in high resolution such as 2K, 4K, or 8K.
- a higher resolution such as 2K, 4K, or 8K
- the entire area of the extended reality space corresponding to 360 degrees may be image-processed and displayed, but in order to provide the entire area as a high-definition image, the load is large when the image is processed. It may not be suitable for the device.
- the present invention provides a high quality extended reality service by performing a high quality image processing only on a region corresponding to the direction of the user's gaze among all the areas corresponding to the extended reality space, but does not have a large expansion reality to be loaded during the image processing.
- a high quality extended reality service by performing a high quality image processing only on a region corresponding to the direction of the user's gaze among all the areas corresponding to the extended reality space, but does not have a large expansion reality to be loaded during the image processing.
- the processor 1220 performs low resolution image processing corresponding to a second average resolution lower than a first average resolution corresponding to reference resolution image processing on the second area surrounding the first area.
- the reference resolution image processing may be applying the first resolution to the entire first area
- the low resolution image processing may be applying the second resolution lower than the first resolution to the entire second area.
- the first resolution is at the 4K level
- the second resolution may correspond to the 1K level.
- the second region may correspond to a partial region surrounding the first region of the entire region of the expanded reality space corresponding to 360 degrees. That is, when the direction of the line of sight of the user is toward the first area, it may be an area included in the field of view of the user.
- the second region 320 may be set to surround the first region.
- the low resolution image processing may divide the second area into a plurality of detail areas, and apply different resolutions to the detail areas.
- the second area may be divided into a plurality of areas, and as the area farther from the center of the first area, the average resolution may be lower.
- the second region surrounding the first region 410 is divided into three divided second regions 420, 430, and 440.
- the average resolution of the divided second area 420 nearest to the center of the first area 410 may be higher than the remaining divided second areas 430 and 440.
- the average resolution of the divided second area 440 furthest from the center of the first area 410 may be lower than the remaining divided second areas 420 and 430.
- the resolution of the first region 410 is 8K
- the resolution of the divided second region 420 nearest to the center of the first region 410 is 4K
- the divided second region 430 is used.
- the resolution of 2K may be set so that the resolution of the divided second region 440 furthest from the center of the first region 410 is image processed corresponding to 1K such that there is no discomfort in the resolution change between the regions.
- the reference resolution image processing may also divide the first area into a plurality of detail areas, and apply different resolutions to the detail areas.
- the first area may be divided into a plurality of areas, and the average resolution may be lower as the area is farther from the center of the first area.
- ranges of the first area and the second area may be set based on the viewing angle based on the direction of the line of sight.
- the viewing angle may correspond to at least one of the horizontal viewing angle and the vertical viewing angle.
- the viewing angle with respect to the second area may be greater than the viewing angle with respect to the first area.
- the left and right ranges of the first area 510 may correspond to the first horizontal viewing angle 511 based on the user's gaze direction 530.
- the first horizontal viewing angle 511 may be changed in consideration of the location of the expanded reality image.
- the left and right ranges of the second area 520 may correspond to the second horizontal viewing angle 512 based on the user's gaze direction 530.
- the user's gaze direction 530 is equally applied to the first area 510 or the second area 520, the area according to the difference between the first horizontal viewing angle 511 and the second horizontal viewing angle 512. Liver ratios may vary.
- the second horizontal viewing angle 512 may also vary the left and right ranges of the second region according to the distance between the user's eye and the expanded reality image. In consideration, the second horizontal viewing angle 512 may be changed.
- the upper and lower ranges of the first region 610 may correspond to the first vertical viewing angle 611 based on the user's eyeline direction 630.
- the first vertical viewing angle 611 may be changed in consideration of the location of the expanded reality image.
- the upper and lower ranges of the second area 620 may correspond to the second vertical viewing angle 612 based on the user's eyeline direction 630.
- the area depends on the difference between the first vertical viewing angle 611 and the second vertical viewing angle 612. Liver ratios may vary.
- the second vertical viewing angle 612 may also change the upper and lower ranges of the second region according to the distance between the user's eye and the expanded reality image, thereby forming a position where the expanded reality image is formed. In consideration, the second vertical viewing angle 612 may be changed.
- the range when the speed of changing the direction of the gaze is slow may be wider than the range when the speed of changing the direction of the gaze is fast.
- the relationship between the speed at which the direction of the line of sight changes and the range of the first region and the second region may be inversely proportional to that shown in FIG. 7. That is, the faster the speed at which the line of sight changes, the narrower the range of the first region and the second region.
- the range of the first region and the second region may be narrowed and displayed.
- the relationship between the speed at which the direction of the eyes changes and the range of the first region and the second region may correspond to an inverse relationship as shown in FIG. 8.
- the relationship between the speed at which the direction of the eyeline changes and the range of the first region and the second region corresponds to an inverse relationship, but may not be limited to a specific inverse function.
- the processor 1220 resets the first area and the second area based on the changed direction of the gaze.
- the direction of the line of sight of the user 101 illustrated in FIG. 1 may be assumed to change from 110 corresponding to the left side to 130 corresponding to the right side.
- the first area and the second area may be set to correspond to the gaze direction 110, and may be reset to correspond to the gaze direction 130 as the direction of the gaze changes.
- the reset first region may be processed with reference resolution image
- the reset second region may be processed with low resolution image
- the first average resolution when the direction of the line of sight changes is slower than the first average resolution when the rate of the line of sight changes.
- the second average resolution when the speed at which the direction of the gaze changes is higher than the second average resolution when the speed at which the direction of the gaze changes is high.
- the relationship between the speed at which the direction of the eyeline changes and the first average resolution or the second average resolution may be inversely proportional to that shown in FIG. 9. That is, the faster the speed at which the line of sight changes, the lower the first average resolution or the second average resolution.
- the image processing may be performed by lowering the first average resolution or the second average resolution.
- the relationship between the speed at which the direction of the eyeline changes and the first average resolution or the second average resolution may correspond to an inverse relationship as shown in FIG. 10.
- the relationship between the speed at which the direction of the eyeline changes and the first average resolution or the second average resolution corresponds to an inverse relationship, but may not be limited to a specific inverse function.
- the processor 1220 combines the result of performing the reference resolution image processing with the result of performing the low resolution image processing and displays the result to the user.
- the extended reality image may be displayed by combining the result of performing the reference resolution image processing and the result of performing the low resolution image processing using a display module provided in the expansion reality based image processing apparatus.
- the result of performing the reference resolution image processing and the result of performing the low resolution image processing through a separate display device or display module connected to the image processing apparatus, which is located outside the expanded reality based image processing apparatus. It can also display augmented reality images.
- the memory 1230 stores the first average resolution and the second average resolution.
- the memory 1230 may support a function for augmented reality image processing according to an embodiment of the present invention as described above.
- the memory 1230 may operate as a separate mass storage, and may include a control function for performing an operation.
- the augmented reality image processing device is equipped with a memory can store information in the device.
- the memory is a computer readable medium.
- the memory may be a volatile memory unit, and for other implementations, the memory may be a nonvolatile memory unit.
- the storage device is a computer readable medium.
- the storage device may include, for example, a hard disk device, an optical disk device, or some other mass storage device.
- the resolution and quality of the expanded reality content may be improved.
- the expanded reality image processing method and apparatus for the same are not limited to the configuration and method of the embodiments described as described above, but the embodiments may be modified in various ways. All or some of the embodiments may be optionally combined.
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Abstract
Description
Claims (20)
- 확장현실(EXTENDED REALITY) 기반의 영상처리 장치를 착용한 사용자의 시선의 방향을 감지하는 단계;상기 시선의 방향에 대응하는 제1 영역에 대하여 기준 해상도 영상 처리를 수행하는 단계; 및상기 제1 영역을 둘러싸는 제2 영역에 대하여 상기 기준 해상도 영상 처리에 상응하는 제1 평균 해상도보다 낮은 제2 평균 해상도에 상응하는 저해상도 영상 처리를 수행하는 단계를 포함하는 것을 특징으로 하는 확장현실 영상처리 방법.
- 청구항 1에 있어서,상기 제2 영역은 복수개의 영역들로 구분되고, 상기 제1 영역의 중심에서 먼 영역일수록 평균 해상도가 더 낮아지는 것을 특징으로 하는 확장현실 영상처리 방법.
- 청구항 1에 있어서,상기 확장현실 영상처리 방법은상기 시선의 방향이 변화하면, 변화된 시선의 방향을 기준으로 상기 제1 영역 및 상기 제2 영역을 재설정하는 단계를 더 포함하는 것을 특징으로 하는 확장현실 영상처리 방법.
- 청구항 1에 있어서,상기 시선의 방향을 기준으로 하는 시야각을 기반으로 상기 제1 영역 및 상기 제2 영역에 대한 범위를 설정하는 것을 특징으로 하는 확장현실 영상처리 방법.
- 청구항 4에 있어서,상기 시야각은수평 시야각 및 수직 시야각 중 적어도 하나에 상응하는 것을 특징으로 하는 확장현실 영상처리 방법.
- 청구항 1에 있어서,상기 확장현실 영상처리 방법은상기 기준 해상도 영상 처리를 수행한 결과와 상기 저해상도 영상 처리를 수행한 결과를 결합하여 상기 사용자에게 디스플레이하는 단계를 더 포함하는 것을 특징으로 하는 확장현실 영상처리 방법.
- 청구항 3에 있어서,상기 시선의 방향이 변화하는 속도가 느린 경우의 제1 평균 해상도가 상기 시선의 방향이 변화하는 속도가 빠른 경우의 제1 평균 해상도보다 높은 것을 특징으로 하는 확장현실 영상처리 방법.
- 청구항 3에 있어서,상기 시선의 방향이 변화하는 속도가 느린 경우의 제2 평균 해상도가 상기 시선의 방향이 변화하는 속도가 빠른 경우의 제2 평균 해상도보다 높은 것을 특징으로 하는 확장현실 영상처리 방법.
- 청구항 4에 있어서,상기 제2 영역에 대한 시야각이 상기 제1 영역에 대한 시야각보다 큰 것을 특징으로 하는 확장현실 영상처리 방법.
- 청구항 4에 있어서,상기 시선의 방향이 변화하면, 상기 시선의 방향이 변화하는 속도가 느린 경우의 범위가 상기 시선의 방향이 변화하는 속도가 빠른 경우의 범위보다 넓은 것을 특징으로 하는 확장현실 영상처리 방법.
- 확장현실(EXTENDED REALITY) 기반의 영상처리 장치를 착용한 사용자의 시선의 방향을 감지하고, 상기 시선의 방향에 대응하는 제1 영역에 대하여 기준 해상도 영상 처리를 수행하고, 상기 제1 영역을 둘러싸는 제2 영역에 대하여 상기 기준 해상도 영상 처리에 상응하는 제1 평균 해상도보다 낮은 제2 평균 해상도에 상응하는 저해상도 영상 처리를 수행하는 프로세서; 및상기 제1 평균 해상도 및 상기 제2 평균 해상도를 저장하는 메모리를 포함하는 것을 특징으로 하는 확장현실 영상처리 장치.
- 청구항 11에 있어서,상기 제2 영역은 복수개의 영역들로 구분되고, 상기 제1 영역의 중심에서 먼 영역일수록 평균 해상도가 더 낮아지는 것을 특징으로 하는 확장현실 영상처리 장치.
- 청구항 12에 있어서,상기 프로세서는상기 시선의 방향이 변화하면, 변화된 시선의 방향을 기준으로 상기 제1 영역 및 상기 제2 영역을 재설정하는 것을 특징으로 하는 확장현실 영상처리 장치.
- 청구항 11에 있어서,상기 시선의 방향을 기준으로 하는 시야각을 기반으로 상기 제1 영역 및 상기 제2 영역에 대한 범위를 설정하는 것을 특징으로 하는 확장현실 영상처리 장치.
- 청구항 14에 있어서,상기 시야각은수평 시야각 및 수직 시야각 중 적어도 하나에 상응하는 것을 특징으로 하는 확장현실 영상처리 장치.
- 청구항 11에 있어서,상기 프로세서는상기 기준 해상도 영상 처리를 수행한 결과와 상기 저해상도 영상 처리를 수행한 결과를 결합하여 상기 사용자에게 디스플레이하는 것을 특징으로 하는 확장현실 영상처리 장치.
- 청구항 13에 있어서,상기 시선의 방향이 변화하는 속도가 느린 경우의 제1 평균 해상도가 상기 시선의 방향이 변화하는 속도가 빠른 경우의 제1 평균 해상도보다 높은 것을 특징으로 하는 확장현실 영상처리 장치.
- 청구항 13에 있어서,상기 시선의 방향이 변화하는 속도가 느린 경우의 제2 평균 해상도가 상기 시선의 방향이 변화하는 속도가 빠른 경우의 제2 평균 해상도보다 높은 것을 특징으로 하는 확장현실 영상처리 장치.
- 청구항 14에 있어서,상기 제2 영역에 대한 시야각이 상기 제1 영역에 대한 시야각보다 큰 것을 특징으로 하는 확장현실 영상처리 장치.
- 청구항 14에 있어서,상기 시선의 방향이 변화하면, 상기 시선의 방향이 변화하는 속도가 느린 경우의 범위가 상기 시선의 방향이 변화하는 속도가 빠른 경우의 범위보다 넓은 것을 특징으로 하는 확장현실 영상처리 장치.
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| KR20140014870A (ko) * | 2012-07-26 | 2014-02-06 | 엘지이노텍 주식회사 | 시선 추적 장치 및 이의 시선 추적 방법 |
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| KR20180027369A (ko) * | 2016-09-05 | 2018-03-14 | 암, 리미티드 | 그래픽 처리 시스템 및 그래픽 프로세서 |
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