WO2016008356A1 - Method for shooting star track, method for shooting object movement track and mobile terminal - Google Patents

Abstract

A method for shooting star track is disclosed in embodiments of the present invention, the method for shooting star track comprises the following steps: making a display screen into a black screen state after starting the shooting, capturing star track images in a preset time and generating a synthetic image according to the star track images; making the display screen into a bright screen state and displaying the generated synthetic image when the preset time is reached. A method for shooting object movement track, a mobile terminal and a storage medium are disclosed in embodiments of the present invention.

Description

Method for shooting star track, method for shooting object motion track, and mobile terminal Technical field

The invention relates to the field of camera technology, in particular to a method for shooting a star track, a method for shooting an object motion track, a mobile terminal and a storage medium.

Background technique

With the continuous improvement of the imaging hardware of mobile terminals such as mobile phones and tablet computers, the shooting functions of mobile terminals are becoming more and more diverse, and the requirements for shooting of mobile terminals are also increasing. The current mobile terminal has a shooting function that relies on the relevant processing algorithms provided by the camera hardware device and the chip supplier, and only several fixed shooting modes such as focus and white balance.

Star-track shooting can capture the running track of the stars, which is a favorite way for astronomy enthusiasts to shoot. When shooting a star track, the exposure time usually takes 20 to 60 minutes, which requires a professional camera such as a SLR camera, because it is equipped with a photosensitive hardware that can support long-term continuous exposure. However, the current shooting of the star track can only be operated when the mobile terminal is bright, which makes the power consumption high, such as the interruption of the image during the shooting process, the synthesis of the star track image cannot be completed, thereby affecting the user experience.

Summary of the invention

In order to solve the above problems, an embodiment of the present invention provides a method for shooting a star track, a method for capturing an object motion trajectory, a mobile terminal, and a storage medium, which can reduce power consumption during shooting and improve user experience.

The embodiment of the invention adopts the following technical solutions:

In a first aspect, an embodiment of the present invention provides a method for star-track shooting, and the method for shooting a star-track includes the following steps:

After the shooting starts, the control display screen is in a black screen state, the star track image is collected within a preset time, and a composite image is generated according to the star track image;

When the preset time is reached, the display screen is controlled to be in a bright screen state, and the generated composite image is displayed.

In an embodiment of the present invention, after the shooting starts, the display screen is controlled to be in a black screen state, and the star track image is collected within a preset time, and the step of generating a composite image according to the star track image includes:

After the shooting starts, the control display screen is in a black screen state, and the star track image is continuously collected by the camera during the preset time;

Real-time synthesizing the acquired current star-track image with the previously generated composite image to generate the current composite image.

In an embodiment of the present invention, before the step of controlling the display screen to be a bright screen state and displaying the generated composite image when the preset time is reached, the method for shooting the star track further includes the steps of:

When the user's instruction to illuminate the display screen is received, the generated current composite image is displayed to the user.

In an embodiment of the present invention, after the shooting starts, the display screen is controlled to be in a black screen state, and the star track image is collected within a preset time, and the step of generating a composite image according to the star track image includes:

After the shooting starts, the control display screen is in a black screen state, and the star track image is continuously collected by the camera during the preset time;

All the acquired star-track images are stored, and after the shooting is completed, a composite image is generated based on the stored star-track images.

In an embodiment of the present invention, before the step of controlling the display screen to be a bright screen state and displaying the generated composite image when the preset time is reached, the method for shooting the star track further includes the steps of:

Upon receiving an instruction from the user to illuminate the display screen, the user is prompted for a wait message to wait for a composite image to be generated.

In a second aspect, the embodiment of the present invention further provides a mobile terminal, where the mobile terminal includes:

The acquisition and synthesis module is configured to control the display screen to be in a black screen state after the start of shooting, collect a star track image within a preset time, and generate a composite image according to the star track image;

The first display module is configured to control the display screen to be in a bright screen state when the preset time is reached, and display the generated composite image.

In an embodiment of the invention, the collecting and synthesizing module is configured to:

After the shooting starts, the control display screen is in a black screen state, and the star track image is continuously collected by the camera during the preset time;

Real-time synthesizing the acquired current star-track image with the previously generated composite image to generate the current composite image.

In an embodiment of the present invention, the mobile terminal further includes:

The second display module is configured to display the generated current composite image to the user when receiving an instruction from the user to illuminate the display screen.

In an embodiment of the invention, the collecting and synthesizing module is further configured to:

After the shooting starts, the control display screen is in a black screen state, and the star track image is continuously collected by the camera during the preset time;

All the acquired star-track images are stored, and after the shooting is completed, a composite image is generated based on the stored star-track images.

In an embodiment of the present invention, the mobile terminal further includes:

The third display module is configured to, when receiving an instruction from the user to illuminate the display screen, prompt the user for the waiting information to wait for the generated composite image.

In a third aspect, an embodiment of the present invention further provides a method for photographing an object motion trajectory, where the method for photographing an object motion trajectory includes the following steps:

After the shooting starts, the control display screen is in a black screen state, the moving image of the object is collected within a preset time, and the composite image is generated according to the moving image of the object;

When the preset time is reached, the display screen is controlled to be in a bright screen state, and the generated composite image is displayed.

In an embodiment of the present invention, after the shooting starts, the display screen is controlled to be in a black screen state, and the moving image of the object is collected within the preset time, and the step of generating the composite image according to the moving image of the object includes:

After the shooting starts, the control display screen is in a black screen state, and the moving image of the object is continuously collected by the camera during the preset time;

Real-time synthesizing the acquired current object moving image with the previously generated composite image to generate the current composite image.

In an embodiment of the present invention, before the step of controlling the display screen to be in a bright screen state and displaying the generated composite image when the preset time is reached, the method for photographing the motion track of the object further includes the step :

When the user's instruction to illuminate the display screen is received, the generated current composite image is displayed to the user.

In an embodiment of the present invention, after the shooting starts, the display screen is controlled to be in a black screen state, and the moving image of the object is collected within the preset time, and the step of generating the composite image according to the moving image of the object includes:

After the shooting starts, the control display screen is in a black screen state, and the moving image of the object is continuously collected by the camera during the preset time;

All the moving images of the objects are stored, and after the shooting is completed, a composite image is generated according to the stored moving images of the objects.

In an embodiment of the present invention, before the step of controlling the display screen to be in a bright screen state and displaying the generated composite image when the preset time is reached, the method for photographing the motion track of the object further includes the step :

Upon receiving an instruction from the user to illuminate the display screen, the user is prompted for a wait message to wait for a composite image to be generated.

In a fourth aspect, the embodiment of the present invention further provides a mobile terminal, where the mobile terminal includes:

The acquisition and synthesis module is configured to control the display screen to be in a black screen state after the start of shooting, collect an object moving image within a preset time, and generate a composite image according to the object moving image;

The first display module is configured to control the display screen to be in a bright screen state when the preset time is reached, and display the generated composite image.

In an embodiment of the invention, the collecting and synthesizing module is configured to:

After the shooting starts, the control display screen is in a black screen state, and the moving image of the object is continuously collected by the camera during the preset time;

Real-time synthesizing the acquired current object moving image with the previously generated composite image to generate the current composite image.

In an embodiment of the present invention, the mobile terminal further includes:

The second display module is configured to display the generated current composite image to the user when receiving an instruction from the user to illuminate the display screen.

In an embodiment of the invention, the collecting and synthesizing module is further configured to:

After the shooting starts, the control display screen is in a black screen state, and the moving image of the object is continuously collected by the camera during the preset time;

All the moving images of the objects are stored, and after the shooting is completed, a composite image is generated according to the stored moving images of the objects.

In an embodiment of the present invention, the mobile terminal further includes:

The third display module is configured to, when receiving an instruction from the user to illuminate the display screen, prompt the user for the waiting information to wait for the generated composite image.

In a fifth aspect, an embodiment of the present invention provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the method for star track shooting provided by the first aspect of the present invention. And/or the computer-executable instructions are used to perform the method of photographing the motion trajectory of the object provided by the embodiment of the third aspect of the present invention.

In the embodiment of the present invention, after the shooting starts, the display screen is controlled to be in a black screen state, and the star track image is collected in a preset time to generate a composite image according to the star track image; when the preset time is reached, the display screen is controlled to be a bright screen state. And display the resulting composite image. Keeping the display screen of the mobile terminal in a black screen state during the process of capturing the star track image and the composite image, and lighting the screen to display the generated composite image to the user after generating the composite image, thereby reducing the power consumption during the shooting process. Thereby improving the user experience.

DRAWINGS

1 is a schematic flow chart of a first embodiment of a method for shooting a star track according to the present invention;

2 is a schematic flow chart of a first embodiment of the step of acquiring a star-track image in a preset time in FIG. 1;

3 is a schematic flow chart of a second embodiment of a method for star-track shooting according to the present invention;

4 is a schematic diagram showing a refinement of a second embodiment of the step of acquiring a star-track image in a preset time in FIG. 1;

5 is a schematic flow chart of a third embodiment of a method for shooting a star track according to the present invention;

6 is a schematic diagram of functional modules of a first embodiment of a mobile terminal according to the present invention;

7 is a schematic diagram of functional modules of a second embodiment of a mobile terminal according to the present invention;

8 is a schematic diagram of functional modules of a third embodiment of a mobile terminal according to the present invention;

FIG. 9 is a schematic flow chart of a first embodiment of a method for photographing an object motion trajectory according to the present invention.

The implementation, functional features and advantages of the embodiments of the present invention will be further described with reference to the accompanying drawings.

detailed description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the scope of the invention.

Embodiments of the present invention provide a method for star track shooting.

1 is a schematic flow chart of a first embodiment of a method for shooting a star track according to an embodiment of the present invention.

In an embodiment, the method of shooting the star track comprises:

Step S10, after the shooting starts, the control display screen is in a black screen state, the star track image is collected within a preset time, and the composite image is generated according to the star track image;

The embodiment of the invention adds a star track shooting mode for the shooting function of the mobile terminal, and the user can select the star track shooting mode or the normal shooting mode for shooting, wherein the star track shooting mode is combined with the requirements of the star track shooting scene, and is preset. The parameters such as exposure time, ISO, resolution, exposure compensation, noise reduction, etc., can also preset different parameters according to different starry sky scenes over different regions, for the user to select when shooting.

When the user selects the star track shooting mode, presses the shooting button or triggers the virtual shooting button, the mobile terminal starts to shoot the star track. At this time, the display of the mobile terminal is controlled to be in a black screen state, and the shooting is taken within a preset time. Star track image. In this embodiment, the preset time is a black screen time preset according to the estimated star track shooting time, and the preset time can be customized by the user even if the display screen of the mobile terminal remains in a black screen state during the entire shooting process. Can be set by the system by default. After the star track image is acquired, a composite image is generated from the star track image to present the trajectory of the star to the user. The collected star track image may be cached in the cache module for synthesizing the star track image from the cache module when the composite image is generated, or may be synthesized in real time during the process of acquiring the star track image.

In step S20, when the preset time is reached, the display screen is controlled to be in a bright screen state, and the generated composite image is displayed.

The star track image is captured within a preset time and all shooting is completed, that is, when the preset time is reached, the display screen of the mobile terminal is controlled to be in a bright screen state, and the generated composite image is presented to the user on the display screen to display the user to the user. The trajectory of the stars you want to shoot.

In this embodiment, after the shooting starts, the display screen is controlled to be in a black screen state, and is taken in a preset time. The star track image is generated to generate a composite image according to the star track image; when the preset time is reached, the display screen is controlled to be in a bright screen state, and the generated composite image is displayed. Keeping the display screen of the mobile terminal in a black screen state during the process of capturing the star track image and the composite image, and lighting the screen to display the generated composite image to the user after generating the composite image, thereby reducing the power consumption during the shooting process. Thereby improving the user experience.

Referring to FIG. 2, FIG. 2 is a schematic diagram of a refinement of a first embodiment of the step of acquiring a star-track image in a preset time in FIG.

In the above embodiment, step S10 further includes:

Step S11, after the shooting starts, the control display screen is in a black screen state, and the star track image is continuously collected by the camera during the preset time;

When the mobile terminal starts to shoot the star track, the display screen of the mobile terminal is controlled to be in a black screen state, and the star track image is continuously collected by the camera of the mobile terminal within a preset time, and the collection time can be preset, and the camera collects each time. Time to collect a star track image, the acquisition time is equivalent to the exposure time, preferably 5 ~ 10S.

In step S12, the collected current star track image is combined with the previously generated composite image in real time to generate a current composite image.

In the process of shooting, when the first star-track image is collected, it is taken as the image to be composited, and after the second star-track image is acquired, it is combined with the image to be synthesized into a current composite image, and the latter is sequentially The acquired star track image is combined with the previously generated composite image to finally generate a composite image formed by all the captured star track images.

In a preferred embodiment, for pixels at different times in the same position, it is determined whether the brightness of the pixels in the current star-track image is greater than the brightness of the pixels in the image synthesized in the past, and if so, the pixels in the past image are replaced with The pixels in the current star-track image are the final composite image after all the pixels with smaller brightness in the past image are replaced. That is, the image synthesis of the present embodiment is performed by the method of brightness selection, and the image synthesized by the previous one (past image) Based on the base image; then a synthetic method in which the brightness of the subsequent image is replaced with a pixel that is brighter than the base image is selected.

For example, the first star track image has been acquired, and based on the first star track image (past image), when the second star track image (current image) is acquired, the first star track image and the second star track image are Comparing the pixels of the corresponding position, if the brightness of the second picture is greater than the brightness of the first picture, extracting the pixels of the second star track image to replace the pixels corresponding to the position of the first star track image, and finally obtaining a composite image, Then, based on this composite image, the subsequent images are subjected to the same processing, and finally the composite images corresponding to all the captured star-track images are obtained.

For example, the pixel track image includes a pixel unit 1, a pixel unit 2, and a pixel unit n, and a total of n pixel units, wherein the brightness of the current image of the pixel unit 501 to the pixel unit 700 is greater than that of the past image. The pixels of the pixel unit 501 to the pixel unit 700 in the current image replace the pixels of the pixel unit 501 to the pixel unit 700 in the past image, and after the replacement is completed, a new image, that is, the current composite image is obtained. This way of replacing the bright spots, compared with the way of highlights superposition, can more clearly capture the trajectory of the star movement, preventing other bright spots next to the star track from being too bright and affecting the star track effect.

In addition, the composite image can also be subjected to noise reduction processing, and at the same time, according to the exposure degree of the existing image, the synthesis ratio of the newly synthesized image is controlled, and overexposure generation is suppressed.

Referring to FIG. 3, FIG. 3 is a schematic flow chart of a second embodiment of a method for shooting a star track according to the present invention.

On the basis of the first embodiment of the method for shooting a star track of the present invention, in the second embodiment, before the step S20 is performed, the method further includes:

Step S30, when receiving an instruction from the user to illuminate the display screen, displaying the generated current composite image to the user.

Before the preset time is reached, that is, when the composite image is not generated, the user can illuminate the display screen at any time through the opening key of the mobile terminal to view the current star-track image shooting situation, such as receiving the user. Triggering the indication of lighting the display screen, the screen is illuminated. Since the current composite image is synthesized in real time during the shooting process, after the user lights the screen, the currently synthesized current composite image can be displayed to the user for the user to understand. The synthesis of the composite image corresponding to the star-track image.

After the shooting starts, the control display screen is in a black screen state, and during the preset time, the current star track image is combined with the previous generated composite image in the process of continuously collecting the star track image through the camera to generate the current Combining the image and synthesizing the current composite image with the next star track image until the composite image corresponding to the star track image is generated, so as to display the instruction to the user before receiving the instruction to light the display screen before the preset time is reached. The synthesized current composite image allows the user to understand the synthesis of the composite image, thereby further enhancing the user experience.

Referring to FIG. 4, FIG. 4 is a refinement flow diagram of a second embodiment of the step of acquiring a star-track image in a preset time in FIG.

The first embodiment of the method for star-track shooting according to the present invention, step S10 may further include:

Step S13, after the shooting starts, the control display screen is in a black screen state, and the star track image is continuously collected by the camera during the preset time;

When the mobile terminal starts to shoot the star track, the display screen of the mobile terminal is controlled to be in a black screen state, and the star track image is continuously collected by the camera of the mobile terminal within a preset time, and the collection time can be preset, and the camera collects each time. Time to collect a star track image, the acquisition time is equivalent to the exposure time, preferably 5 ~ 10S.

Step S14, storing all the acquired satellite image, and after the shooting is completed, generating a composite image according to the stored star track image.

During the shooting process, all the star track images captured are stored in the cache module in the mobile terminal, and after the shooting is completed, the synthesized images are synthesized according to all the stored star track images to generate a composite image. In this case, the acquired star track image is obtained from the cache module, and the first picture is taken as the image to be combined, and the second star track image and the image to be synthesized are combined into one current composite image, and the latter is sequentially The star track image is synthesized with the previously generated composite image, and the final A composite image of all the star-track images taken.

In a preferred embodiment, for pixels at different times in the same position, it is determined whether the brightness of the pixels in the current star-track image is greater than the brightness of the pixels in the image synthesized in the past, and if so, the pixels in the past image are replaced with The pixels in the current star-track image are the final composite image after all the pixels with smaller brightness in the past image are replaced. That is, the image synthesis of the present embodiment is performed by means of brightness selection, based on the image synthesized above, as a base image; and then a synthesis method in which the luminance of the subsequent image is replaced with the pixel whose base image is brighter is selected.

For example, based on the image of the first star track selected from the acquired star track image, the first star track image is compared with the pixel of the corresponding position of the second star track image, and if the brightness of the second sheet is greater than the brightness of the first sheet, the extraction is performed. The pixels of the second star-track image are replaced by the pixels corresponding to the position of the first star-track image, and finally a composite image is obtained, and then the subsequent image is subjected to the same processing based on the composite image, and finally the captured image is obtained. The composite image corresponding to all the star track images.

For example, the pixel track image includes a pixel unit 1, a pixel unit 2, and a pixel unit n, and a total of n pixel units, wherein the brightness of the current image of the pixel unit 501 to the pixel unit 700 is greater than that of the past image. The pixels of the pixel unit 501 to the pixel unit 700 in the current image replace the pixels of the pixel unit 501 to the pixel unit 700 in the past image, and after the replacement is completed, a new image, that is, the current composite image is obtained. This way of replacing the bright spots, compared with the way of highlights superposition, can more clearly capture the trajectory of the star movement, preventing other bright spots next to the star track from being too bright and affecting the star track effect.

In addition, the composite image can also be subjected to noise reduction processing, and at the same time, according to the exposure degree of the existing image, the synthesis ratio of the newly synthesized image is controlled, and overexposure generation is suppressed.

Referring to FIG. 5, FIG. 5 is a schematic flow chart of a third embodiment of a method for star-track shooting according to the present invention.

Based on the first embodiment of the method for shooting a star track of the present invention described above, in the third embodiment, Before performing step S20, the method further includes:

Step S40, when receiving an instruction from the user to illuminate the display screen, prompting the user for the waiting information to wait for the generation of the composite image.

Before the preset time is reached, that is, when the composite image is not generated, the screen is illuminated if an indication that the user triggers the display of the display is received, in which case the composite image is acquired after all the star track images have been acquired. After the user lights up the screen, the composite image may still be in progress, that is, not yet generated. At this time, the waiting information is displayed to the user to prompt the user to synthesize the image at this time, please wait to generate a composite image. After receiving the waiting message, the user can manually select to turn off the display, or continue to keep the display in a bright state, waiting for the composite image to be generated.

After the shooting starts, the control display screen is in a black screen state, and during the preset time, the star track image is continuously collected by the camera, and all the star track images captured are stored in the cache module in the mobile terminal, after the shooting is completed. And synthesizing according to all stored star-track images to generate a composite image, such as receiving an instruction to light the display screen before the preset time is reached, prompting the user to wait for information, waiting to generate a composite image, further improving The user experience.

The invention further provides a mobile terminal.

Referring to FIG. 6, FIG. 6 is a schematic diagram of functional modules of a first embodiment of a mobile terminal according to the present invention.

In an embodiment, the mobile terminal includes:

The collecting and synthesizing module 10 is configured to control the display screen to be in a black screen state after the shooting starts, collect a star track image within a preset time, and generate a composite image according to the star track image;

The first display module 20 is configured to control the display screen to be in a bright screen state when the preset time is reached, and display the generated composite image.

The embodiment of the invention adds a star track shooting mode for the shooting function of the mobile terminal, and the user can select the star track shooting mode or the normal shooting mode for shooting, wherein the star track shooting mode is combined with the requirements of the star track shooting scene, and is preset. The parameters such as exposure time, ISO, resolution, exposure compensation, noise reduction, etc., can also preset different parameters according to different starry sky scenes over different regions. For the user to choose when shooting.

When the user selects the star track shooting mode, the mobile terminal starts the star track shooting after pressing the shooting button or triggering the virtual shooting button. At this time, the collecting and synthesizing module 10 controls the display screen of the mobile terminal to be in a black screen state, and is preset. The captured star track image is captured during the time. In this embodiment, the preset time is a black screen time preset according to the estimated star track shooting time, and the preset time can be customized by the user even if the display screen of the mobile terminal remains in a black screen state during the entire shooting process. Can be set by the system by default. After the star track image is acquired, a composite image is generated from the star track image to present the trajectory of the star to the user. The collected star track image may be cached in the cache module for synthesizing the star track image from the cache module when the composite image is generated, or may be synthesized in real time during the process of acquiring the star track image.

The first display module 20 controls the display screen of the mobile terminal to be in a bright screen state, and displays the generated composite image on the display screen, when the preset time is reached, and the preset time is reached. To show the user the trajectory of the stars they want to shoot.

In this embodiment, after the shooting starts, the display screen is controlled to be in a black screen state, and the star track image is collected within a preset time to generate a composite image according to the star track image; when the preset time is reached, the display screen is controlled to be in a bright screen state. And the resulting composite image is displayed. Keeping the display screen of the mobile terminal in a black screen state during the process of capturing the star track image and the composite image, and lighting the screen to display the generated composite image to the user after generating the composite image, thereby reducing the power consumption during the shooting process. Thereby improving the user experience.

In the above embodiment, the collecting and synthesizing module 10 is specifically configured as follows:

After the shooting starts, the control display screen is in a black screen state, and the star track image is continuously collected by the camera during the preset time;

Real-time synthesizing the acquired current star-track image with the previously generated composite image to generate the current composite image.

When the mobile terminal starts to shoot the star track, the display screen of the mobile terminal is controlled to be in a black screen state. And in a preset time, through the camera of the mobile terminal continuously collecting the star track image, the acquisition time can be set in advance, and a star track image is collected by the camera every acquisition time, and the acquisition time is equivalent to the exposure time, preferably 5 to 10 seconds.

In the process of shooting, when the first star-track image is collected, it is taken as the image to be composited, and after the second star-track image is acquired, it is combined with the image to be synthesized into a current composite image, and the latter is sequentially The acquired star track image is combined with the previously generated composite image to finally generate a composite image formed by all the captured star track images.

In a preferred embodiment, for pixels at different times in the same position, it is determined whether the brightness of the pixels in the current star-track image is greater than the brightness of the pixels in the image synthesized in the past, and if so, the pixels in the past image are replaced with The pixels in the current star-track image are the final composite image after all the pixels with smaller brightness in the past image are replaced. That is, the image synthesis of the present embodiment is performed by means of brightness selection, based on the above-described synthesized image (past image) as a base image; and then a synthesis method in which the brightness of the subsequent image is replaced with the pixel whose base image is brighter is selected. .

For example, the first star track image has been acquired, and based on the first star track image (past image), when the second star track image (current image) is acquired, the first star track image and the second star track image are Comparing the pixels of the corresponding position, if the brightness of the second picture is greater than the brightness of the first picture, extracting the pixels of the second star track image to replace the pixels corresponding to the position of the first star track image, and finally obtaining a composite image, Then, based on this composite image, the subsequent images are subjected to the same processing, and finally the composite images corresponding to all the captured star-track images are obtained.

For example, the pixel track image includes a pixel unit 1, a pixel unit 2, and a pixel unit n, and a total of n pixel units, wherein the brightness of the current image of the pixel unit 501 to the pixel unit 700 is greater than that of the past image. The pixels of the pixel unit 501 to the pixel unit 700 in the current image replace the pixels of the pixel unit 501 to the pixel unit 700 in the past image, and are obtained after the replacement is completed. A new image, the current composite image. This way of replacing the bright spots, compared with the way of highlights superposition, can more clearly capture the trajectory of the star movement, preventing other bright spots next to the star track from being too bright and affecting the star track effect.

In addition, the composite image can also be subjected to noise reduction processing, and at the same time, according to the exposure degree of the existing image, the synthesis ratio of the newly synthesized image is controlled, and overexposure generation is suppressed.

Referring to FIG. 7, FIG. 7 is a schematic diagram of functional modules of a second embodiment of a mobile terminal according to the present invention.

On the basis of the first embodiment of the mobile terminal of the present invention, in the second embodiment, the mobile terminal further includes:

The second display module 30 is configured to display the generated current composite image to the user when receiving an instruction from the user to illuminate the display screen.

Before the preset time is reached, that is, when the composite image is not generated, the user can illuminate the display screen at any time through the opening key of the mobile terminal to view the current star-track image shooting situation, such as receiving an indication that the user triggers the lighting display. Then, the screen is illuminated. Since the current composite image is synthesized in real time during the shooting process, after the user lights the screen, the currently synthesized current composite image can be displayed to the user through the second display module 30 for the user to understand the star track. The synthesis of the composite image corresponding to the image.

After the shooting starts, the control display screen is in a black screen state, and during the preset time, the current star track image is combined with the previous generated composite image in the process of continuously collecting the star track image through the camera to generate the current Combining the image and synthesizing the current composite image with the next star track image until the composite image corresponding to the star track image is generated, so as to display the instruction to the user before receiving the instruction to light the display screen before the preset time is reached. The synthesized current composite image allows the user to understand the synthesis of the composite image, thereby further enhancing the user experience.

Based on the first embodiment of the mobile terminal of the present invention, the acquisition and synthesis module 10 is further configured to:

After the shooting starts, the control display is in a black screen state, and the camera is connected within the preset time. Continue to collect star track images;

Stores all acquired satellite image images, and after the shooting is completed, generates a composite image based on the stored star track image.

When the mobile terminal starts to shoot the star track, the display screen of the mobile terminal is controlled to be in a black screen state, and the star track image is continuously collected by the camera of the mobile terminal within a preset time, and the collection time can be preset, and the camera collects each time. Time to collect a star track image, the acquisition time is equivalent to the exposure time, preferably 5 ~ 10S.

During the shooting process, all the star track images captured are stored in the cache module in the mobile terminal, and after the shooting is completed, the synthesized images are synthesized according to all the stored star track images to generate a composite image. In this case, the acquired star track image is obtained from the cache module, and the first picture is taken as the image to be combined, and the second star track image and the image to be synthesized are combined into one current composite image, and the latter is sequentially The star-track image is synthesized with the previously generated composite image, and finally a composite image formed by all the captured star-track images is generated.

In a preferred embodiment, for pixels at different times in the same position, it is determined whether the brightness of the pixels in the current star-track image is greater than the brightness of the pixels in the image synthesized in the past, and if so, the pixels in the past image are replaced with The pixels in the current star-track image are the final composite image after all the pixels with smaller brightness in the past image are replaced. That is, the image synthesis of the present embodiment is performed by means of brightness selection, based on the image synthesized above, as a base image; and then a synthesis method in which the luminance of the subsequent image is replaced with the pixel whose base image is brighter is selected.

For example, based on the image of the first star track selected from the acquired star track image, the first star track image is compared with the pixel of the corresponding position of the second star track image, and if the brightness of the second sheet is greater than the brightness of the first sheet, the extraction is performed. The pixels of the second star-track image are replaced by the pixels corresponding to the position of the first star-track image, and finally a composite image is obtained, and then the subsequent image is subjected to the same processing based on the composite image, and finally the captured image is obtained. All star track images Corresponding composite image.

For example, the pixel track image includes a pixel unit 1, a pixel unit 2, and a pixel unit n, and a total of n pixel units, wherein the brightness of the current image of the pixel unit 501 to the pixel unit 700 is greater than that of the past image. The pixels of the pixel unit 501 to the pixel unit 700 in the current image replace the pixels of the pixel unit 501 to the pixel unit 700 in the past image, and after the replacement is completed, a new image, that is, the current composite image is obtained. This way of replacing the bright spots, compared with the way of highlights superposition, can more clearly capture the trajectory of the star movement, preventing other bright spots next to the star track from being too bright and affecting the star track effect.

In addition, the composite image can also be subjected to noise reduction processing, and at the same time, according to the exposure degree of the existing image, the synthesis ratio of the newly synthesized image is controlled, and overexposure generation is suppressed.

Referring to FIG. 8, FIG. 8 is a schematic diagram of functional modules of a third embodiment of a mobile terminal according to the present invention.

On the basis of the first embodiment of the mobile terminal of the present invention, in the third embodiment, the mobile terminal further includes:

The third display module 40 is configured to prompt the user to wait for information when receiving an instruction from the user to illuminate the display screen to wait for a composite image to be generated.

Before the preset time is reached, that is, when the composite image is not generated, the screen is illuminated if an indication that the user triggers the display of the display is received, in which case the composite image is acquired after all the star track images have been acquired. After the user lights up the screen, the composite image may still be in progress, that is, not yet generated. At this time, the third display module 40 displays the waiting information to the user to prompt the user to synthesize the image at this time, please wait to generate a composite image. . After receiving the waiting message, the user can manually select to turn off the display, or continue to keep the display in a bright state, waiting for the composite image to be generated.

After the shooting starts, the control display screen is in a black screen state, and during the preset time, the star track image is continuously collected by the camera, and all the star track images captured are stored in the cache module in the mobile terminal, after the shooting is completed. , synthesizing according to all stored star-track images to generate a composite image, such as receiving an instruction to light the display screen before the preset time is reached, The user prompts for information to wait for a composite image to be generated, further enhancing the user experience.

In the above embodiment, only a starry sky image is taken as an example to illustrate a method of photographing an object motion trajectory. The invention also provides a method for photographing an object's motion trajectory.

Referring to FIG. 9, FIG. 9 is a schematic flow chart of a first embodiment of a method for photographing an object motion trajectory according to the present invention.

In an embodiment, the method for photographing the motion trajectory of the object includes:

Step S01, after the shooting starts, the control display screen is in a black screen state, the moving image of the object is collected within a preset time, and the composite image is generated according to the moving image of the object;

The invention adds a motion track shooting mode for the shooting function of the mobile terminal, and the user can select the motion track shooting mode or the normal shooting mode to shoot the motion track of the object, wherein the motion track shooting mode combines the requirements of the motion track shooting scene, Pre-set exposure time, ISO, resolution, exposure compensation, noise reduction and other parameters, you can also preset different parameters according to different starry sky scenes over different regions, for users to choose when shooting. In this embodiment, the object motion is substantially relative to the captured mobile terminal, and the motion type may include the following three situations: 1. The state of the object is motion, the state of the mobile terminal is static; and the state of the object is At rest, the state of the mobile terminal is motion; third, the state of the object and the mobile terminal are the same, but the relative position changes.

When the user selects the motion track shooting mode, the mobile terminal starts to perform the motion track shooting after pressing the shooting button or triggering the virtual shooting button. At this time, the display screen of the mobile terminal is controlled to be in a black screen state, and the shooting is taken within a preset time. Object motion image. In this embodiment, the preset time is a black screen time preset according to the estimated motion trajectory shooting time, and the preset time can be customized by the user even if the display screen of the mobile terminal remains in a black screen state during the entire shooting process. Can be set by the system by default. After the moving image of the object is acquired, a composite image is generated according to the moving image of the object to present the trajectory of the motion of the object to the user. The captured moving image of the object can be cached in the cache module for reading the object from the cache module when generating the composite image The moving image is synthesized, and the real-time synthesis can also be performed directly in the process of acquiring the moving image of the object.

In step S02, when the preset time is reached, the display screen is controlled to be in a bright screen state, and the generated composite image is displayed.

The moving image of the object is captured within a preset time and all shooting is completed, that is, when the preset time is reached, the display screen of the mobile terminal is controlled to be in a bright screen state, and the generated composite image is presented to the user on the display screen to display the user to the user. The trajectory of the motion of the object you want to shoot.

In this embodiment, after the shooting starts, the display screen is controlled to be in a black screen state, and the moving image of the object is collected within a preset time to generate a composite image according to the moving image of the object; when the preset time is reached, the display screen is controlled to be in a bright screen state. And the resulting composite image is displayed. The display screen of the mobile terminal is kept in a black screen state during the whole process of capturing the moving image of the object and the composite image, and the generated image is displayed on the screen after the composite image is generated, thereby reducing the power consumption during the shooting process. Thereby improving the user experience.

For a detailed description of the embodiment, reference may be made to the description of all the embodiments of the method for shooting the star track proposed in the foregoing embodiments, and details are not described herein again.

The invention also provides a mobile terminal.

In an embodiment, the mobile terminal comprises:

The acquisition and synthesis module is configured to control the display screen to be in a black screen state after the start of shooting, collect an object moving image within a preset time, and generate a composite image according to the moving image of the object;

The first display module is configured to control the display screen to be in a bright screen state when the preset time is reached, and display the generated composite image.

The embodiment of the invention adds a motion track shooting mode for the shooting function of the mobile terminal, and the user can select the motion track shooting mode or the normal shooting mode to capture the motion track of the object, wherein the motion track shooting mode combines the motion track to shoot the scene. Requirements, preset exposure time, ISO, resolution, exposure compensation, noise reduction and other parameters, can also be based on different regions Different sky-space scenes preset different parameters for the user to select when shooting. In this embodiment, the object motion is substantially relative to the captured mobile terminal, and the motion type may include the following three situations: 1. The state of the object is motion, the state of the mobile terminal is static; and the state of the object is At rest, the state of the mobile terminal is motion; third, the state of both the object and the mobile terminal is motion.

When the user selects the motion track shooting mode, after pressing the shooting button or triggering the virtual shooting button, the mobile terminal starts the motion track shooting. At this time, the collecting and synthesizing module controls the display screen of the mobile terminal to be in a black screen state, and at the preset time. The moving image of the captured object is captured. In this embodiment, the preset time is a black screen time preset according to the estimated motion trajectory shooting time, and the preset time can be customized by the user even if the display screen of the mobile terminal remains in a black screen state during the entire shooting process. Can be set by the system by default. After the moving image of the object is acquired, a composite image is generated according to the moving image of the object to present the trajectory of the motion of the object to the user. The collected moving image of the object may be cached in the cache module for synthesizing the moving image of the object from the cache module when the composite image is generated, or may be synthesized in real time during the process of acquiring the moving image of the object.

When the moving image of the object is captured and the whole shooting is completed within a preset time, that is, when the preset time is reached, the first display module controls the display screen of the mobile terminal to be in a bright screen state, and presents the generated composite image to the user on the display screen, Show the user the trajectory of the motion of the object he wants to shoot.

In this embodiment, after the shooting starts, the display screen is controlled to be in a black screen state, and the moving image of the object is collected within a preset time to generate a composite image according to the moving image of the object; when the preset time is reached, the display screen is controlled to be in a bright screen state. And the resulting composite image is displayed. The display screen of the mobile terminal is kept in a black screen state during the whole process of capturing the moving image of the object and the composite image, and the generated image is displayed on the screen after the composite image is generated, thereby reducing the power consumption during the shooting process. Thereby improving the user experience.

For a detailed description of this embodiment, reference may be made to all embodiments of the mobile terminal proposed in the foregoing embodiments. The description is not repeated here.

The acquiring and synthesizing module, the first display module, the collecting and synthesizing module, the second display module and the third display module in the mobile terminal provided by the embodiment of the present invention can all be implemented by a processor in the mobile terminal; The functions performed by the device can also be implemented by specific logic circuits; in the process of a specific embodiment, the processor can be a central processing unit (CPU), a microprocessor (MPU), a digital signal processor (DSP) or field programmable. Gate array (FPGA), etc.

It should be noted that, in the embodiment of the present invention, if the above-mentioned object motion trajectory shooting method or the object motion trajectory shooting method is implemented in the form of a software function module, and is sold or used as an independent product, it may also be stored in one The computer can read the storage medium. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions. A computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention. The foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

Correspondingly, the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute a method for star track shooting in the embodiment of the present invention.

Correspondingly, the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute a method for photographing an object motion track in the embodiment of the present invention.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention. Inside.

Industrial applicability

In the embodiment of the present invention, after the shooting starts, the display screen is controlled to be in a black screen state, the star track image is collected within a preset time, and the composite image is generated according to the star track image; when the preset time is reached, the display screen is controlled to be in a bright screen state. And displaying the generated composite image; thus, the display screen of the mobile terminal is kept in a black screen state during the process of capturing the star track image and the composite image, and the generated image is displayed on the screen after the composite image is generated, minus The power consumption during shooting is reduced, which enhances the user experience.

Claims (22)

A method of star-track shooting, the method for shooting a star-track includes the following steps: After the shooting starts, the control display screen is in a black screen state, the star track image is collected within a preset time, and a composite image is generated according to the star track image; When the preset time is reached, the display screen is controlled to be in a bright screen state, and the generated composite image is displayed. The method for shooting a star track according to claim 1, wherein after the shooting starts, the display screen is controlled to be in a black screen state, the star track image is acquired within a preset time, and the step of generating a composite image according to the star track image includes : After the shooting starts, the control display screen is in a black screen state, and the star track image is continuously collected by the camera during the preset time; Real-time synthesizing the acquired current star-track image with the previously generated composite image to generate the current composite image. The method of claim 2, wherein the step of controlling the display screen to a bright screen state and displaying the generated composite image before the step of displaying the predetermined time is performed by the star track The method also includes the steps of: When the user's instruction to illuminate the display screen is received, the generated current composite image is displayed to the user. The method for shooting a star track according to claim 1, wherein after the shooting starts, the display screen is controlled to be in a black screen state, the star track image is acquired within a preset time, and the step of generating a composite image according to the star track image includes : After the shooting starts, the control display screen is in a black screen state, and the star track image is continuously collected by the camera during the preset time; All the acquired star-track images are stored, and after the shooting is completed, a composite image is generated based on the stored star-track images. A method of star-tracking as claimed in claim 4, wherein said Before setting the time, before the step of controlling the display screen to be in a bright screen state and displaying the generated composite image, the method of shooting the star track further includes the steps of: Upon receiving an instruction from the user to illuminate the display screen, the user is prompted for a wait message to wait for a composite image to be generated. A mobile terminal, the mobile terminal comprising: The acquisition and synthesis module is configured to control the display screen to be in a black screen state after the start of shooting, collect a star track image within a preset time, and generate a composite image according to the star track image; The first display module is configured to control the display screen to be in a bright screen state when the preset time is reached, and display the generated composite image. The mobile terminal of claim 6, wherein the acquisition and synthesis module is configured to: After the shooting starts, the control display screen is in a black screen state, and the star track image is continuously collected by the camera during the preset time; Real-time synthesizing the acquired current star-track image with the previously generated composite image to generate the current composite image. The mobile terminal of claim 7, wherein the mobile terminal further comprises: The second display module is configured to display the generated current composite image to the user when receiving an instruction from the user to illuminate the display screen. The mobile terminal of claim 6, wherein the acquisition and synthesis module is further configured to: After the shooting starts, the control display screen is in a black screen state, and the star track image is continuously collected by the camera during the preset time; All the acquired star-track images are stored, and after the shooting is completed, a composite image is generated based on the stored star-track images. The mobile terminal of claim 9, wherein the mobile terminal further comprises: The third display module is configured to, when receiving an instruction from the user to illuminate the display screen, prompt the user for the waiting information to wait for the generated composite image. A method for photographing an object motion trajectory, the method for photographing an object motion trajectory includes the following steps: After the shooting starts, the control display screen is in a black screen state, the moving image of the object is collected within a preset time, and the composite image is generated according to the moving image of the object; When the preset time is reached, the display screen is controlled to be in a bright screen state, and the generated composite image is displayed. The method for photographing an object motion trajectory according to claim 11, wherein after the photographing starts, the display screen is controlled to be in a black screen state, the object moving image is acquired within a preset time, and the step of generating a composite image according to the object moving image is performed. include: After the shooting starts, the control display screen is in a black screen state, and the moving image of the object is continuously collected by the camera during the preset time; Real-time synthesizing the acquired current object moving image with the previously generated composite image to generate the current composite image. The method for photographing an object motion trajectory according to claim 12, wherein said object motion trajectory is controlled before said step of displaying said generated composite image when said preset time is reached The shooting method also includes the steps: When the user's instruction to illuminate the display screen is received, the generated current composite image is displayed to the user. The method for photographing an object motion trajectory according to claim 11, wherein after the photographing starts, the display screen is controlled to be in a black screen state, the object moving image is acquired within a preset time, and the step of generating a composite image according to the object moving image is performed. include: After the shooting starts, the control display screen is in a black screen state, and the moving image of the object is continuously collected by the camera during the preset time; Stores the moving images of all objects collected, after the shooting is completed, according to the stored objects The body motion image generates a composite image. The method of photographing an object motion trajectory according to claim 14, wherein said object motion trajectory is controlled before said step of displaying said generated composite image when said preset time is reached The shooting method also includes the steps: Upon receiving an instruction from the user to illuminate the display screen, the user is prompted for a wait message to wait for a composite image to be generated. A mobile terminal, the mobile terminal comprising: The acquisition and synthesis module is configured to control the display screen to be in a black screen state after the start of shooting, collect an object moving image within a preset time, and generate a composite image according to the object moving image; The first display module is configured to control the display screen to be in a bright screen state when the preset time is reached, and display the generated composite image. The mobile terminal of claim 16, wherein the acquisition and synthesis module is configured to: After the shooting starts, the control display screen is in a black screen state, and the moving image of the object is continuously collected by the camera during the preset time; Real-time synthesizing the acquired current object moving image with the previously generated composite image to generate the current composite image. The mobile terminal of claim 17, wherein the mobile terminal further comprises: The second display module is configured to display the generated current composite image to the user when receiving an instruction from the user to illuminate the display screen. The mobile terminal of claim 16, wherein the acquisition and synthesis module is further configured to: After the shooting starts, the control display screen is in a black screen state, and the moving image of the object is continuously collected by the camera during the preset time; Stores the moving images of all objects collected, after the shooting is completed, according to the stored objects The body motion image generates a composite image. The mobile terminal of claim 19, wherein the mobile terminal further comprises: The third display module is configured to, when receiving an instruction from the user to illuminate the display screen, prompt the user for the waiting information to wait for the generated composite image. A computer storage medium having stored therein computer executable instructions for performing the method of star track shooting of any one of claims 1 to 5. A computer storage medium having stored therein computer executable instructions for performing a method of photographing an object motion trajectory according to any one of claims 11 to 15.

Images