CN112512184A - Color-taking illumination control method, device, system and storage medium - Google Patents
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- 238000005286 illumination Methods 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 64
- 238000005070 sampling Methods 0.000 claims description 25
- 238000004590 computer program Methods 0.000 claims description 11
- 239000003086 colorant Substances 0.000 claims description 9
- 230000009466 transformation Effects 0.000 claims description 8
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
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- G06T5/92—
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/11—Region-based segmentation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/80—Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/90—Determination of colour characteristics
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/646—Circuits for processing colour signals for image enhancement, e.g. vertical detail restoration, cross-colour elimination, contour correction, chrominance trapping filters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
- H05B47/11—Controlling the light source in response to determined parameters by determining the brightness or colour temperature of ambient light
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The invention provides a color-taking illumination control method, device and system and a storage medium, and relates to the technical field of display screen background lights. The invention discloses a color-taking illumination control method, which comprises the following steps: acquiring a screen image of a display screen through an image capturing device; determining RGB values according to the screen image; and controlling the color of a background light corresponding to the display screen according to the RGB value. According to the technical scheme, the screen image of the display screen is acquired through the image capturing device, and the RGB value is determined according to the screen image, so that the color of the background light is controlled according to the RGB value, and the synchronization of the color of the background light of the display screen and the color of the screen image is realized; the image capturing device can be arranged at any display screen, so that the application range of the color-taking illumination control method is effectively improved; meanwhile, compared with a control method that a built-in mainboard acquires the screen picture color and then controls a background light, the control method is lower in cost, and therefore the popularization of the color-taking illumination control method is facilitated.
Description
Technical Field
The invention relates to the technical field of display screen background lights, in particular to a color-taking illumination control method, device and system and a storage medium.
Background
The display screen of current part brand acquires screen picture colour and then controls external background light through built-in mainboard, however most display screens on the market do not possess this function at present, only realize the background illumination through the external background light that sets up alone, but the external background light that has set up alone can only show fixed one kind or several kinds of colors, and the screen picture colour with the display screen does not match completely, leads to the background illumination to be difficult to satisfy user's demand.
Disclosure of Invention
The invention solves the problem that the colors of the traditional separately arranged external background lights are not completely matched with the screen image.
In order to solve the above problems, the present invention provides a color-taking illumination control method, including: acquiring a screen image of a display screen through an image capturing device; determining RGB values according to the screen image; and controlling the color of a background light corresponding to the display screen according to the RGB value.
The color-taking illumination control method obtains the screen image of the display screen through the image capturing device, and then determines the RGB value according to the screen image, thereby controlling the color of the background light according to the RGB value and realizing the synchronization of the background light of the display screen and the color of the screen image; the image capturing device can be arranged at any display screen, so that the application range of the color-taking illumination control method is effectively improved; meanwhile, compared with a control method that a built-in mainboard acquires the screen picture color and then controls a background light, the control method is lower in cost, and therefore the popularization of the color-taking illumination control method is facilitated.
Preferably, the acquiring, by the image capturing apparatus, the screen image of the display screen includes: correcting the image capture device; acquiring the screen image through the corrected image capturing device.
According to the color-taking illumination control method, the image capturing device is corrected before the screen image is obtained, so that the color-taking precision of the image capturing device is improved, and the precision and the effectiveness of the color-taking illumination control method are effectively improved.
Preferably, the image capture device is at a height difference with a display plane of the display screen; the correcting the image capture device comprises: acquiring an initial screen by the image capture device; sending the initial screen picture to a mobile terminal to enable the mobile terminal to execute calibration operation, wherein the calibration operation comprises: moving a plurality of calibration points to corresponding corner positions of the initial screen picture to finish the calibration operation; and receiving calibration operation information of the mobile terminal, and correcting the image capturing device according to the calibration operation information.
According to the color-taking illumination control method, the image capturing device is corrected before the screen image is obtained, so that the color-taking precision of the image capturing device is improved, and the precision and the effectiveness of the color-taking illumination control method are effectively improved.
Preferably, the determining RGB values from the screen image comprises: carrying out perspective transformation on the screen image to obtain a front view; dividing the front view into a plurality of areas and acquiring YUV values of the areas; converting the YUV values to the RGB values.
The color-taking illumination control method provided by the invention has the advantages that the front view is obtained by carrying out perspective transformation on the screen image, so that the problems of serious deformity and proportion maladjustment of the acquired picture are solved, the color-taking precision of the image capturing device is improved, and the precision and the effectiveness of the color-taking illumination control method are effectively improved.
Preferably, the controlling the color of the backlight corresponding to the display screen according to the RGB values includes: and controlling the colors of the plurality of lamp strips according to the RGB value so as to control the color of the background lamp consisting of the plurality of lamp strips.
The color-taking illumination control method controls the colors of the lamp strips according to the RGB values so as to control the color of the background lamp consisting of the lamp strips, realizes the correspondence between the color of the background lamp and the screen image of the display screen, and further effectively improves the precision and the effectiveness of the color-taking illumination control method.
Preferably, the color-taking illumination control method further includes: and adopting an enhancement algorithm to enhance the RGB value, and sending the enhanced RGB value to the background light so as to control the color of the background light.
According to the color-taking illumination control method, the RGB value is enhanced through the enhancement algorithm, so that the brightness of the background light is improved, the condition that the color of the screen acquired by the camera becomes light due to factors such as illumination factors or mirror reflection is reduced, the color and the brightness of the background light correspond to the color and the brightness height of the display screen, and the effectiveness of the color-taking illumination control method is effectively improved.
The present invention also provides a color-taking illumination control device, including: the acquisition module is used for acquiring a screen image of the display screen through the image capture device; the determining module is used for determining RGB values according to the screen image; and the control module is used for controlling the color of the background light according to the RGB value. Compared with the prior art, the color-taking illumination control device and the color-taking illumination control method have the same advantages, and are not described herein again.
The invention also provides a color-sampling illumination control device, which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium is used for storing a computer program, and the computer program is read by the processor and runs to realize the color-sampling illumination control method. Compared with the prior art, the color-taking illumination control device and the color-taking illumination control method have the same advantages, and are not described herein again.
Another embodiment of the present invention provides a color-sampling illumination control system including an image capturing apparatus and the color-sampling illumination control apparatus as described above. Compared with the prior art, the color-taking illumination control system and the color-taking illumination control method have the same advantages, and are not described herein again.
The present invention also provides a computer-readable storage medium storing a computer program which, when read and executed by a processor, implements the color-extracting illumination control method as described above. The computer readable storage medium has the same advantages as the color-taking illumination control method described above over the prior art, and is not described herein again.
Drawings
Fig. 1 is a flowchart of a color-sampling illumination control method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an installation position of an image capturing apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating an image capturing apparatus according to an embodiment of the invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1, an embodiment of the present invention provides a color-sampling illumination control method, including: acquiring a screen image of a display screen through an image capturing device; determining RGB values according to the screen image; and controlling the color of a background light corresponding to the display screen according to the RGB value.
Specifically, in this embodiment, with reference to fig. 1, the color-sampling illumination control method includes: acquiring a screen image of a display screen through an image capturing device; determining RGB values according to the screen image; and controlling the color of the background light corresponding to the display screen according to the RGB value.
The image capturing device can be a camera module of a camera, after the camera is installed on a display screen of a television or a computer, and the like, a screen image of the display screen is acquired through the image capturing device of the camera, namely picture information (such as YUV values of television pictures) is acquired through a large-angle lens, and the YUV values are processed into RGB values; and controlling the color of the background lamp according to the RGB value, namely, the DSP chip of the camera sends the RGB value to the lamp strip of the background lamp, so that the lamp strip in the specific area displays the color corresponding to the RGB value. The color displayed by the background lamp is obtained according to the screen image of the display screen collected by the camera, so that the synchronization of the color of the background lamp of the display screen and the color of the screen image is realized; meanwhile, the camera is detachable, so that the image capturing device can be installed at any display screen, and the application range of the color-taking illumination control method is effectively improved; meanwhile, compared with a control method that a built-in mainboard acquires the screen picture color and then controls a background light, the control method is lower in cost, and therefore the popularization of the color-taking illumination control method is facilitated.
Optionally, the acquiring, by the image capturing device, the screen image of the display screen includes: correcting the image capture device; acquiring the screen image through the corrected image capturing device.
Specifically, in the present embodiment, acquiring a screen image of a display screen by an image capturing apparatus includes: installing a camera at the top or the bottom of the display screen, and displaying the installation position of the camera on a mobile terminal in communication connection with the camera when the camera is installed at the top of the display screen, for example, as shown in fig. 2; correcting the image capture device; acquiring a screen image by the corrected image capturing apparatus. Because of the color-taking error caused by the accuracy of the installation position, the inclination angle above the television and the like, the user needs to perform calibration before taking color by using the camera. By correcting the image capturing device of the camera before acquiring the screen image, the color taking precision of the image capturing device is improved, and therefore the precision and the effectiveness of the color taking illumination control method are effectively improved.
In the embodiment, the color sampling precision of the image capturing device is improved by correcting the image capturing device before acquiring the screen image, so that the precision and the effectiveness of the color sampling illumination control method are effectively improved.
Optionally, the image capture device is at a height different from a display plane of the display screen; the correcting the image capture device comprises: acquiring an initial screen by the image capture device; sending the initial screen picture to a mobile terminal to enable the mobile terminal to execute calibration operation, wherein the calibration operation comprises: moving a plurality of calibration points to corresponding corner positions of the initial screen picture to finish the calibration operation; and receiving calibration operation information of the mobile terminal, and correcting the image capturing device according to the calibration operation information.
Specifically, in the present embodiment, the correction image capturing apparatus includes: acquiring an initial screen picture; sending the initial screen picture to the mobile terminal so as to enable the mobile terminal to execute calibration operation, wherein the calibration operation comprises the following steps: moving the plurality of calibration points to corresponding corner positions of the initial screen picture to finish calibration operation; and receiving calibration operation information of the mobile terminal, and correcting the image capturing device according to the calibration operation information. The user needs to perform calibration before taking color using the camera because of color taking errors that may be caused by the accuracy of the installation position and the tilt angle above the television, i.e., the height difference between the image capturing device and the display plane of the display screen. Referring to fig. 3, after the preparation process is in place, the image capturing device of the camera acquires an initial screen and sends the initial screen to the mobile terminal, and the mobile terminal performs a calibration operation, including: and dragging the five calibration points to the corresponding corner positions of the initial screen picture by the user, and sending calibration operation information, namely the calibration operation of the user, to the image capturing device so that the image capturing device corrects the camera according to the calibration operation of the user. By correcting the image capturing device before acquiring the screen image, the color sampling precision of the image capturing device is improved, and therefore the precision and the effectiveness of the color sampling illumination control method are effectively improved.
In the embodiment, the color sampling precision of the image capturing device is improved by correcting the image capturing device before acquiring the screen image, so that the precision and the effectiveness of the color sampling illumination control method are effectively improved.
Optionally, the determining RGB values from the screen image comprises: carrying out perspective transformation on the screen image to obtain a front view; dividing the front view into a plurality of areas and acquiring YUV values of the areas; converting the YUV values to the RGB values.
Specifically, in the present embodiment, determining RGB values from the screen image includes: carrying out perspective transformation on the screen image to obtain a front view; dividing the front view into a plurality of areas and acquiring YUV values of the areas; the YUV values are converted to RGB values. Because the image capturing device and the display plane of the display screen have a height difference, namely the position of the camera is not right in front of the display screen, the problems of serious deformity and imbalance of proportion of the collected images exist, and therefore perspective transformation is needed to be adopted to process the screen images, namely the images at different positions far away from the camera and near the camera are subjected to proportion adjustment to obtain a front view; because the lighting conditions of different areas are different, the front view is divided into a plurality of areas, YUV values of the areas are obtained, and the YUV values are converted into RGB values, so that the corresponding color of the lamp strip is controlled at the position corresponding to the background lamp. The front view is obtained by carrying out perspective transformation on the screen image, so that the problems of serious deformity and proportion maladjustment of the collected picture are solved, the color taking precision of the image capturing device is improved, and the precision and the effectiveness of the color taking illumination control method are effectively improved.
In the embodiment, the front view is obtained by carrying out perspective transformation on the screen image, so that the problems of serious deformity and scale maladjustment of the acquired picture are solved, the color taking precision of the image capturing device is improved, and the precision and the effectiveness of the color taking illumination control method are effectively improved.
Optionally, the controlling the color of a backlight corresponding to the display screen according to the RGB values includes: and controlling the colors of the plurality of lamp strips according to the RGB value so as to control the color of the background lamp consisting of the plurality of lamp strips.
Specifically, in the present embodiment, controlling the color of the backlight corresponding to the display screen according to the RGB values includes: and controlling the colors of the plurality of lamp strips according to the RGB value so as to control the color of a background lamp consisting of the plurality of lamp strips. The YUV value of one frame of the corresponding region is obtained, the YUV value is converted into the RGB value, the color of the lamp strip is controlled through the RGB value, and the color of the background lamp is finally displayed by the color combination of each lamp strip because the YUV values of different regions are different. The colors of the lamp belts are controlled according to the RGB values so as to control the color of a background lamp consisting of the lamp belts, the correspondence between the color of the background lamp and the screen image of the display screen is realized, and the precision and the effectiveness of the color-taking illumination control method are further effectively improved.
In this embodiment, the colors of the plurality of lamp bands are controlled according to the RGB values to control the color of the background light composed of the plurality of lamp bands, so that the correspondence between the color of the background light and the screen image of the display screen is realized, and the accuracy and effectiveness of the color-taking illumination control method are further effectively improved.
Optionally, the color-sampling illumination control method further includes: and adopting an enhancement algorithm to enhance the RGB value, and sending the enhanced RGB value to the background light so as to control the color of the background light.
Specifically, in this embodiment, the color-taking illumination control method further includes: and enhancing the RGB value by adopting an enhancement algorithm, and sending the enhanced RGB value to the background lamp so as to control the color of the background lamp. Because the color of the screen captured by the camera becomes lighter due to lighting factors or specular reflection in the home of the user, an enhancement algorithm (which may also be referred to as a color-exaggeration algorithm) is required to be used to enhance the vividness of the color (for example, the exaggeration algorithm is 60%, and r ═ 160%, g ═ 160%, and b ═ 160%). With the popularization of OLED televisions, the problem of specular reflection becomes smaller because each pixel is self-luminous. For televisions or displays with other panels, the original color is restored by adopting a color enhancement technology, and meanwhile, the problems that the color temperature of the near end is warmer and the color temperature of the far end is colder are solved by calibrating the color temperature. The RGB value is enhanced through the enhancement algorithm, so that the brightness of the background light is improved, the condition that the color of the screen collected by the camera becomes light due to factors such as illumination factors or mirror reflection is reduced, the color and the brightness of the background light correspond to the color and the brightness height of the display screen, and the effectiveness of the color-taking illumination control method is effectively improved.
In the embodiment, the RGB value is enhanced through the enhancement algorithm, so that the brightness of the background light is improved, the condition that the color of the screen collected by the camera becomes light due to factors such as illumination factors or mirror reflection is reduced, the color and the brightness of the background light correspond to the color and the brightness height of the display screen, and the effectiveness of the color-taking illumination control method is effectively improved.
Another embodiment of the present invention provides a color-taking illumination control apparatus, including: the acquisition module is used for acquiring a screen image of the display screen through the image capture device; the determining module is used for determining RGB values according to the screen image; and the control module is used for controlling the color of the background light according to the RGB value.
Another embodiment of the present invention provides a color-sampling illumination control apparatus, including a computer-readable storage medium storing a computer program and a processor, where the computer program is read by the processor and executed to implement the color-sampling illumination control method.
In this embodiment, the color-taking illumination control device may be a DSP chip of the camera.
Another embodiment of the present invention provides a color-sampling illumination control system including an image capturing apparatus and the color-sampling illumination control apparatus as described above. The system comprises a camera, an image capturing device and a color-taking illumination control device, wherein the camera is taken as an example of the color-taking illumination control system and comprises the image capturing device and the color-taking illumination control device, the image capturing device is used for acquiring images of a display screen, and the color-taking illumination control device is used for realizing the color-taking illumination control method.
In this embodiment, the image capturing device may be a camera module of a camera, that is, the color-taking illumination control method may be completed only by the camera module and the DSP chip of the camera.
Another embodiment of the present invention provides a computer-readable storage medium, which stores a computer program, and when the computer program is read and executed by a processor, the computer program implements the color-taking illumination control method as described above.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.
Claims (10)
1. A color-taking illumination control method, comprising:
acquiring a screen image of a display screen through an image capturing device;
determining RGB values according to the screen image;
and controlling the color of a background light corresponding to the display screen according to the RGB value.
2. The color-sampling illumination control method according to claim 1, wherein the acquiring, by the image capturing device, the screen image of the display screen includes:
correcting the image capture device;
acquiring the screen image through the corrected image capturing device.
3. The color-sampling illumination control method according to claim 2, wherein there is a height difference between the image capturing device and a display plane of the display screen; the correcting the image capture device comprises:
acquiring an initial screen by the image capture device;
sending the initial screen picture to a mobile terminal to enable the mobile terminal to execute calibration operation, wherein the calibration operation comprises: moving a plurality of calibration points to corresponding corner positions of the initial screen picture to finish the calibration operation;
and receiving calibration operation information of the mobile terminal, and correcting the image capturing device according to the calibration operation information.
4. The method of claim 1, wherein the determining RGB values from the screen image comprises:
carrying out perspective transformation on the screen image to obtain a front view;
dividing the front view into a plurality of areas and acquiring YUV values of the areas;
converting the YUV values to the RGB values.
5. The color-taking illumination control method according to claim 4, wherein the controlling the color of the backlight corresponding to the display screen according to the RGB values includes:
and controlling the colors of the plurality of lamp strips according to the RGB value so as to control the color of the background lamp consisting of the plurality of lamp strips.
6. The color-sampling illumination control method according to any one of claims 1 to 5, characterized by further comprising: and adopting an enhancement algorithm to enhance the RGB value, and sending the enhanced RGB value to the background light so as to control the color of the background light.
7. A color-taking illumination control apparatus, comprising:
the acquisition module is used for acquiring a screen image of the display screen through the image capture device;
the determining module is used for determining RGB values according to the screen image;
and the control module is used for controlling the color of the background light according to the RGB value.
8. A color-sampling illumination control apparatus comprising a computer-readable storage medium storing a computer program and a processor, the computer program being read by the processor and executing, to implement the color-sampling illumination control method according to any one of claims 1 to 6.
9. A color-sampling illumination control system comprising an image capturing apparatus and the color-sampling illumination control apparatus according to claim 8.
10. A computer-readable storage medium, characterized in that it stores a computer program which, when read and executed by a processor, implements the color-taking illumination control method according to any one of claims 1 to 6.
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| CN113677071A (en) * | 2021-08-11 | 2021-11-19 | 深圳市智岩科技有限公司 | Lamp control method and device, electronic equipment and storage medium |
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