CN116009801A - Color correction method, storage medium and related device - Google Patents
Color correction method, storage medium and related device Download PDFInfo
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Abstract
The application provides a color standard correction method, a storage medium and related equipment, and belongs to the technical field of display. The method comprises the following steps: receiving a 3D display lookup table corresponding to the first preset color temperature, and performing color quasi correction on a display picture with the color temperature being the first preset color temperature according to the 3D display lookup table; processing the corrected display picture to obtain a first white field picture; and adjusting the color temperature of the first white field picture to a target color temperature for white balance correction, wherein the target color temperature comprises a second preset color temperature and a third preset color temperature. In the application, the piecewise function is adopted to replace the fitting of the whole section of polynomial, so that the RGB spectrum tristimulus value and the brightness of the display device are closer to the original value, thereby reducing larger errors caused by polynomial fitting and improving the color correction effect. In the application, the color quasi correction under three color temperatures can be completed only by receiving the 3D display lookup table under one color temperature, the color quasi correction time length of a display picture is reduced, and the color quasi correction efficiency is improved.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a color correction method, a storage medium, and a related device.
Background
Before the display device leaves the factory, the display screen of the display device needs to be subjected to color level correction.
The display screen needs to correct the color level under the standard color temperature, the warm color temperature and the cold color temperature.
At present, the color level of a display picture is corrected through a 3D display lookup table corresponding to the color temperature, and the display picture needs to be respectively corrected under three different color temperatures, namely, the color level correction of the display picture needs to be performed through a 3D display lookup table combined by the three 3D display lookup tables. However, the combined 3D display look-up table is larger, and a longer time is required for transmitting the combined 3D display look-up table to the device, resulting in a longer time for color correction of the display screen, i.e. lower efficiency of color correction.
Disclosure of Invention
The application provides a color standard correction method, a storage medium and related equipment, which are used for solving the problem of low color standard correction efficiency.
In a first aspect, the present application provides a color correction method, including:
receiving a 3D display lookup table corresponding to a first preset color temperature, and performing color quasi-correction on a display picture with the color temperature being the first preset color temperature according to the 3D display lookup table;
processing the corrected display picture to obtain a first white field picture;
and adjusting the color temperature of the first white field picture to a target color temperature for white balance correction, wherein the target color temperature comprises a second preset color temperature and a third preset color temperature.
In an embodiment, the step of adjusting the color temperature of the first white field picture to a target color temperature for performing white balance correction includes:
respectively adjusting the color temperature of the first white field picture to a first preset color temperature and a second preset color temperature to carry out white balance correction;
or, adjusting the color temperature of the first white field picture to a second preset color temperature to perform white balance correction, processing the picture obtained by the white balance correction after the white balance correction is completed to obtain a second white field picture, and adjusting the color temperature of the second white field picture to a third preset color temperature to perform white balance correction.
In an embodiment, after the step of adjusting the color temperature of the first white field picture to the target color temperature for performing white balance correction, the method further includes:
acquiring the corrected actual chromaticity value of the pixel point in the display picture, and acquiring the standard chromaticity value of the pixel point;
determining a color difference according to the actual chromaticity value and the standard chromaticity value;
and when the color difference is smaller than or equal to a preset color difference, determining that the color quasi-correction is successful, and writing the 3D display lookup table into display equipment for performing the color quasi-correction.
In an embodiment, after the step of determining the color difference according to the actual chroma value and the standard chroma value, the method further includes:
and outputting prompt information of failure of color correction when the color difference is larger than a preset color difference.
In an embodiment, the step of adjusting the color temperature of the first white field picture to a target color temperature for performing white balance correction includes:
acquiring the brightness of the first white field picture;
and when the brightness is larger than the preset brightness, adjusting the color temperature of the first white field picture to a target color temperature for white balance correction.
In an embodiment, after the step of obtaining the brightness of the first white field picture, the method further includes:
and outputting prompt information of failure of color correction when the brightness is smaller than or equal to the preset brightness.
In a second aspect, the present invention provides a color correction device comprising:
the receiving module is used for receiving a 3D display lookup table corresponding to the first preset color temperature and carrying out color quasi correction on a display picture of the display equipment according to the 3D display lookup table;
the processing module is used for processing the corrected display picture to obtain a first white field picture;
the correction module is used for adjusting the color temperature of the first white field picture to a target color temperature to carry out white balance correction, wherein the target color temperature comprises a second preset color temperature and a third preset color temperature.
In a second aspect, the present invention provides a color correction apparatus comprising: a display screen, a memory and a processor;
the display screen is used for displaying pictures;
the memory stores computer-executable instructions;
the processor executes computer-executable instructions stored by the memory to cause the color level correction device to perform the color level correction method as described above.
In a third aspect, the present invention provides a computer-readable storage medium having stored therein computer-executable instructions for implementing a color level correction method as described above when executed by a processor.
In a fourth aspect, the present invention provides an electronic device having stored therein computer-executable instructions for implementing a color correction method as described above when executed by a processor.
According to the color quasi-correction method, the storage medium and the computer readable storage medium, a 3D display lookup table corresponding to the first preset color temperature is received, color quasi-correction is carried out on a display picture with the color temperature being the first preset color temperature according to the 3D display lookup table, a white field picture is obtained by processing the corrected display picture, and finally the color temperature of the white field picture is adjusted to a target color temperature for white balance correction. In the invention, the 3D display lookup table under one color temperature is adopted to conduct color quasi-correction on the display picture, then the color temperature of the corrected white field picture is adjusted to the target color temperature to conduct white balance correction, and the target color temperature comprises the other two color temperatures, namely, the invention can complete the color quasi-correction of the display picture under three color temperatures by only receiving the 3D display lookup table under one color temperature, reduces the transmission time length of the 3D display lookup table, reduces the color quasi-correction time length of the display picture, and improves the color quasi-correction efficiency.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a flowchart of a first embodiment of a color level correction method according to the present application;
FIG. 2 is a flowchart of a second embodiment of a color level correction method according to the present application;
FIG. 3 is a detailed flowchart of step S30 in a third embodiment of the color level correction method of the present application;
FIG. 4 is a schematic diagram of functional modules of the color calibration device of the present application;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Specific embodiments of the present disclosure have been shown by way of the above drawings and will be described in more detail below. These drawings and the written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the disclosed concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
It should be noted that, for the sake of brevity, this specification is not exhaustive of all of the alternative embodiments, and after reading this specification, one skilled in the art will appreciate that any combination of features may constitute an alternative embodiment as long as the features do not contradict each other.
For example, in one implementation of the example, one technical feature is described: in another implementation of this embodiment, another technical feature is described that the color temperature of the first white field picture is respectively adjusted to a first preset color temperature and a second preset color temperature to perform white balance correction: and adjusting the color temperature of the first white field picture to a second preset color temperature to carry out white balance correction, processing the picture obtained after the white balance correction is completed to obtain a second white field picture, and adjusting the color temperature of the second white field picture to a third preset color temperature to carry out white balance correction. Since the above two technical features are not contradictory, after reading the specification of the application, a person skilled in the art should be able to think that an embodiment having both features is also an alternative embodiment, that is, the first preset color temperature is located between the second preset color temperature and the third preset temperature, and then the color temperature of the first white field picture is respectively adjusted to the first preset color temperature and the second preset color temperature to perform white balance correction; if the first preset temperature is larger or smaller than the second preset temperature and the third preset temperature, the color temperature of the first white field picture is adjusted to the second preset color temperature to carry out white balance correction, after the white balance correction is completed, the picture obtained by the white balance correction is processed to obtain a second white field picture, and the color temperature of the second white field picture is adjusted to the third preset color temperature to carry out white balance correction.
The technical features described in the different embodiments, which are not mutually contradictory, can also be arbitrarily combined to form alternative embodiments.
For example, in the first embodiment, it is described that: and adjusting the color temperature of the first white field picture to a second preset color temperature to carry out white balance correction, processing the picture obtained after the white balance correction is completed to obtain a second white field picture, and adjusting the color temperature of the second white field picture to a third preset color temperature to carry out white balance correction. For the sake of controlling the spread of the present specification, this feature is not described in the first and second embodiments. However, it should be appreciated by those skilled in the art, after having read the present specification, that the color register correction method provided by the first and second embodiments may also include this feature.
The embodiments of the present application are described in detail below.
Referring to fig. 1, fig. 1 is a first embodiment of a color level correction method of the present application, the color level correction method includes the following steps:
step S10, a 3D display lookup table corresponding to the first preset color temperature is received, and the display picture with the color temperature being the first preset color temperature is subjected to color quasi-correction according to the 3D display lookup table.
In the present embodiment, the execution subject is a color correction device, which is a display apparatus. For convenience of description, the following means will be referred to as a color correction means. The device needs to correct three color temperatures, namely a first preset color temperature, a second preset color temperature and a third preset color temperature, wherein the first preset color temperature, the second preset color temperature and the third color temperature are one of a standard color temperature 9300K, a cold color temperature 12000K and a warm color temperature 6500K, and the first preset color temperature, the second preset color temperature and the third preset color temperature are different from each other.
Before performing a color correction on the display device, a preparation work is required. Specifically, the device adopts a scanning gun to scan the display equipment and records the ID of the color standard display equipment. The device is connected with the color analyzer to collect data of the display equipment, wherein the collected data are R, G, B and W. The device performs mapping calculation according to the acquired data and the color space to be targeted, so as to obtain a 3D display lookup table under a first preset color temperature, and further obtain a 3dlut table.
The collected data R (255, 0), G (0,255,0), B (0,0,255), and the matrix M of 3*3 in the color space are known, so that the theoretical XYZ corresponding to RGB is calculated based on the following formula.
3*3 matrix M of computing display screen -1 . Specifically, R (255, 0) is collected,G (0,255,0), B (0,0,255) and X ', Y ' and Z ' are calculated to obtain 3*3 matrix M of the screen -1 。
The R (255, 0), G (0,255,0), B (0,0,255) actual X, Y, and Z were measured, to thereby obtain a luminance value based on the following formula.
And finally, calculating the brightness corresponding to each RGB under the first preset color temperature by adopting brightness interpolation, thereby obtaining a 3D display lookup table under 9300K. The 3D display look-up table may be specifically referred to in table-1:
TABLE-1
After obtaining the 3D display look-up table, the 3D display look-up table is sent to the device, i.e. the device receives the 3D display look-up table at the first preset color temperature. And the device performs color quasi correction on the display picture with the color temperature being the first preset color temperature according to the 3D display lookup table. Specifically, the color temperature of the display screen of the display device is adjusted to a first preset color temperature, then corresponding R ', G' and B 'are found from the 3D display lookup table based on RGB driving values of each pixel point on the display screen, and finally, the color quasi-correction is performed through R', G 'and B'.
Step S20, processing the corrected display screen to obtain a first white field screen.
After the display picture is corrected, the device processes the corrected display picture to obtain a first white field picture, namely, the corrected display picture is subjected to white field setting to obtain the first display picture.
Step S30, the color temperature of the first white field picture is adjusted to a target color temperature for white balance correction, wherein the target color temperature comprises a second preset color temperature and a third preset color temperature.
The display device currently displays a first white field picture, and the device adjusts the color temperature of the first white field picture to a target color temperature to perform white balance correction. The target color temperature includes a second preset color temperature and a third preset color temperature, and thus the apparatus can complete correction of color levels at three color temperatures of the display device.
It should be noted that, performing color level correction at one color temperature using the 3D display lookup table requires performing 6 times of index switching, that is, performing color level correction in the prior art requires performing 18 times of index switching. Switching of index refers to returning a 3D display look-up table to make a determination of the value, the 3D display look-up table including R, G, B, R ', G ' and B ', thus requiring six returns. In this embodiment, the color level of the display screen under one color temperature is adjusted by using the 3D display lookup table of the color temperature, and the correction of the color level under the other two color temperatures is performed by using the white balance. In addition, the color level correction under the three color temperatures of the embodiment is 3D LUT (3D display lookup table) +2×white balance, compared with the correction method of the 3×3D LUT in the prior art, the color level correction process is optimized, and the excessive combined 3D LUT is not required to be received, so that the color level correction time is shortened, and the correction efficiency of the color level is improved.
In the technical scheme provided by the embodiment, a 3D display lookup table corresponding to a first preset color temperature is received, a display picture with the color temperature being the first preset color temperature is subjected to color quasi-correction according to the 3D display lookup table, the corrected display picture is processed to obtain a white field picture, and finally the color temperature of the white field picture is adjusted to a target color temperature for white balance correction. In the invention, the 3D display lookup table under one color temperature is adopted to conduct color quasi-correction on the display picture, then the color temperature of the corrected white field picture is adjusted to the target color temperature to conduct white balance correction, and the target color temperature comprises the other two color temperatures, namely, the invention can complete the color quasi-correction of the display picture under three color temperatures by only receiving the 3D display lookup table under one color temperature, reduces the transmission time length of the 3D display lookup table, reduces the color quasi-correction time length of the display picture, and improves the color quasi-correction efficiency.
In one embodiment, step S20 includes:
and respectively adjusting the color temperature of the first white field picture to a first preset color temperature and a second preset color temperature to carry out white balance correction.
In this embodiment, after the display frame is processed into the first white field frame, the color temperature of the first white field frame is respectively adjusted to the second preset color temperature and the third preset color temperature to perform white balance correction, that is, after the color temperature of the first white field frame is adjusted to the second preset color temperature and the white balance correction under the second preset color temperature is completed, the display frame is switched to the first white field frame, and then the device adjusts the color temperature of the first white field frame to the third preset color temperature to perform white balance correction. For example, the first preset color temperature is 9300K, the second preset color temperature is 6500K and the third preset color temperature is 12000K, the device adjusts the color temperature of the first white field picture to 12000K for warm white balance correction, switches to the first white field picture after the correction is completed, and adjusts the color temperature of the first white field picture to 6500K for cold white balance correction. After the cold white balance correction is completed, the color of the picture is bluish; and after the warm white balance correction is completed, the color of the picture is yellowish red.
Or, adjusting the color temperature of the first white field picture to a second preset color temperature to perform white balance correction, processing the picture obtained by the white balance correction after the white balance correction is completed to obtain a second white field picture, and adjusting the color temperature of the second white field picture to a third preset color temperature to perform white balance correction.
In addition, the device adjusts the color temperature of the first white field picture to a second preset color temperature to carry out white balance correction, and after the correction is completed, the corrected picture is processed to obtain a second white field picture, and then the device adjusts the color temperature of the second white field picture to a third preset color temperature to carry out white balance correction. For example, if the first preset color temperature is 6500K, the color temperature of the first white field picture under 6500K is adjusted to the second preset color temperature 9300K to perform white balance correction, the white field setting is performed on the picture with the white balance correction to obtain the second white field picture, and then the color temperature of the second white field picture is adjusted to the third preset color temperature 12000K to perform warm color white balance correction.
In this embodiment, the device may correct the second preset color temperature and the color level under the second preset color temperature in any one of the above manners.
Referring to fig. 2, fig. 2 is a diagram showing a second embodiment of the color level correction method according to the present invention, based on the first embodiment, after step S30, further including:
step S40, obtaining the actual chromaticity value of the pixel point in the corrected display picture, and obtaining the standard chromaticity value of the pixel point.
And S50, determining the chromatic aberration according to the actual chromatic value and the standard chromatic value.
And step S60, when the color difference is smaller than or equal to the preset color difference, determining that the color quasi-correction is successful, and writing the 3D display lookup table into the display equipment for performing the color quasi-correction.
In this embodiment, after the correction of the color level at three color temperatures is completed, the apparatus needs to determine whether the correction of the color level is successful.
Specifically, the device acquires a color space XYZ corresponding to RGB of a pixel point in the corrected display screen, and can obtain an actual chromaticity value of the pixel point through conversion between the color space CIEXYZ and a color system CIELAB. The device also stores a standard table corresponding to CIELAB. The device acquires standard chromaticity values corresponding to the XYZ in the standard table. The device can determine the chromatic aberration based on a chromatic aberration calculation formula of delta E2000, an actual chromatic value and a standard chromatic value. The color difference calculation formula of Δe2000 is:
the device stores a preset color difference, which may be any suitable value. After the chromatic aberration is determined, comparing the chromatic aberration with a preset chromatic aberration, if the chromatic aberration is smaller than or equal to the preset chromatic aberration, determining that the color standard correction is successful, searching and writing the 3D display into the display equipment for performing the color standard correction, and performing the color standard correction based on the 3D display lookup table when the display equipment corrects the color subsequently.
And outputting prompt information of failure of the color correction when the color difference is larger than the preset color difference.
In the technical scheme provided by the embodiment, the device acquires the actual chromaticity value of the pixel point in the corrected display picture, and acquires the standard chromaticity value of the pixel point, so that the color difference is determined according to the actual chromaticity value and the standard chromaticity value, if the color difference is smaller than or equal to the preset color difference, the color quasi correction is determined to be successful, and the 3D display lookup table is written into the color quasi-corrected display equipment.
Referring to fig. 3, fig. 3 is a third embodiment of the color level correction method according to the present invention, based on the first or second embodiment, step S30 includes:
step S31, the brightness of the first white field picture is obtained.
Step S32, when the brightness is larger than the preset brightness, the color temperature of the first white field picture is adjusted to the target color temperature for white balance correction.
In this embodiment, after performing color correction on the display screen with the first preset color temperature, the device processes the corrected display screen to obtain a first white field screen, and then the device obtains the brightness of the first white field screen. The device stores preset brightness, and the device compares the acquired brightness with the preset brightness. If the obtained brightness is larger than the preset brightness, the brightness can be determined to meet the product requirement, and the device can adjust the color temperature of the first white field picture to the target color temperature for white balance correction, namely, the device can correct the color quasi-colors under the other two color temperatures.
If the obtained brightness is smaller than or equal to the preset brightness, the brightness can be determined to be not in accordance with the product requirement, the device does not need to correct the color standard under other two color temperatures, and the device outputs prompt information of failure of the color standard correction, namely prompts the display equipment to return to factories for remanufacturing.
In addition, when the color level correction is successful, the device displays a prompt message that the device ID is associated with the correction success. If the color level correction fails, the device ID is displayed, and prompt information of the correction failure is associated.
In the technical scheme provided by the embodiment, the device acquires the brightness of the first white field picture, if the brightness is greater than the preset brightness, the device adjusts the color temperature of the first white field picture to the target color temperature to perform white balance correction so as to complete color quasi correction under all the color temperatures, if the brightness is less than the preset brightness, the correction fails, the color quasi correction under other two color temperatures is performed wirelessly, and the device is prevented from performing color quasi correction on unqualified products.
The present application further provides a color correction device, referring to fig. 4, a color correction device 400 includes:
the receiving module 410 is configured to receive a 3D display lookup table corresponding to the first preset color temperature, and perform color quasi-correction on a display screen with a color temperature being the first preset color temperature according to the 3D display lookup table;
a processing module 420, configured to process the corrected display screen to obtain a first white field screen;
the correction module 430 is configured to adjust the color temperature of the first white field picture to a target color temperature for performing white balance correction, where the target color temperature includes a second preset color temperature and a third preset color temperature.
In one embodiment, the color correction device 400 includes:
the correction module 430 is configured to adjust the color temperature of the first white field picture to a first preset color temperature and a second preset color temperature, respectively, to perform white balance correction;
or, the correction module 430 is configured to adjust the color temperature of the first white field picture to a second preset color temperature to perform white balance correction, process the picture obtained after the white balance correction is completed to obtain the second white field picture, and adjust the color temperature of the second white field picture to a third preset color temperature to perform white balance correction.
In one embodiment, the color correction device 400 includes:
the acquisition module is used for acquiring the actual chromaticity value of the pixel point in the corrected display picture and acquiring the standard chromaticity value of the pixel point;
the determining module is used for determining chromatic aberration according to the actual chromatic value and the standard chromatic value;
and the determining module is used for determining that the color quasi-correction is successful when the color difference is smaller than or equal to the preset color difference, and writing the 3D display lookup table into the display equipment for performing the color quasi-correction.
In one embodiment, the color correction device 400 includes:
and the output module is used for outputting prompt information of failure of color quasi correction when the color difference is larger than the preset color difference.
In one embodiment, the color correction device 400 includes:
the acquisition module is used for acquiring the brightness of the first white field picture;
the correction module 430 is configured to adjust the color temperature of the first white field picture to the target color temperature for performing white balance correction when the brightness is greater than the preset brightness.
In one embodiment, the color correction device 400 includes:
and the output module is used for outputting prompt information of failure of color correction when the brightness is smaller than or equal to the preset brightness.
It should be noted that, in the color correction device provided in the foregoing embodiment, only the division of the foregoing functional modules is used as an example when the color correction method is executed, and in practical application, the foregoing functional allocation may be performed by different functional modules according to needs, that is, the internal structure of the apparatus is divided into different functional modules to complete all or part of the functions described above. In addition, the color correction device and the color correction method provided in the above embodiments belong to the same concept, which embody the detailed implementation process in the method embodiment, and are not repeated here.
The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.
The embodiment of the present application further provides a computer storage medium, where a plurality of instructions may be stored, where the instructions are adapted to be loaded by a processor and execute the method steps of the foregoing embodiment, and the specific execution process may refer to the specific description of the embodiment shown in fig. 1 to 3, which is not repeated herein.
The device on which the storage medium resides may be a display device.
Fig. 5 is a schematic diagram of an electronic device according to an exemplary embodiment.
As shown in fig. 5, the electronic device 1000 may include: at least one processor 1001, at least one network interface 1004, a user interface 1003, a memory 1005, at least one communication bus 1002.
Wherein the communication bus 1002 is used to enable connected communication between these components.
The user interface 1003 may include a Display screen (Display) and a Camera (Camera), and the optional user interface 1003 may further include a standard wired interface and a wireless interface.
The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface), among others.
Wherein the processor 1001 may include one or more processing cores. The processor 1001 connects various parts within the overall electronic device 1000 using various interfaces and lines, performs various functions of the electronic device 1000 and processes data by executing or executing instructions, programs, code sets, or instruction sets stored in the memory 1005, and invoking data stored in the memory 1005. Alternatively, the processor 1001 may be implemented in at least one hardware form of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), programmable logic array (Programmable Logic Array, PLA). The processor 1001 may integrate one or a combination of several of a central processing unit (Central Processing Unit, CPU), an image processor (Graphics Processing Unit, GPU), and a modem, etc. The CPU mainly processes an operating system, a user interface, an application program and the like; the GPU is used for rendering and drawing the content required to be displayed by the display screen; the modem is used to handle wireless communications. It will be appreciated that the modem may not be integrated into the processor 1001 and may be implemented by a single chip.
The Memory 1005 may include a random access Memory (Random Access Memory, RAM) or a Read-Only Memory (Read-Only Memory). Optionally, the memory 1005 includes a non-transitory computer readable medium (non-transitory computer-readable storage medium). The memory 1005 may be used to store instructions, programs, code, sets of codes, or sets of instructions. The memory 1005 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing the above-described respective method embodiments, etc.; the storage data area may store data or the like referred to in the above respective method embodiments. The memory 1005 may also optionally be at least one storage device located remotely from the processor 1001. As shown in fig. 5, an operating system, a network communication module, a user interface module, and an operating application of the electronic device may be included in the memory 1005, which is one type of computer storage medium.
In the electronic device 1000 shown in fig. 5, the user interface 1003 is mainly used for providing an input interface for a user, and acquiring data input by the user; and the processor 1001 may be configured to invoke an operating application of the electronic device stored in the memory 1005, and specifically perform the following operations:
receiving a 3D display lookup table corresponding to the first preset color temperature, and performing color quasi correction on a display picture with the color temperature being the first preset color temperature according to the 3D display lookup table;
processing the corrected display picture to obtain a first white field picture;
and adjusting the color temperature of the first white field picture to a target color temperature for white balance correction, wherein the target color temperature comprises a second preset color temperature and a third preset color temperature.
In one embodiment, the operating system of the electronic device is an android system in which the processor 1001 further performs the steps of:
respectively adjusting the color temperature of the first white field picture to a first preset color temperature and a second preset color temperature to carry out white balance correction;
or, adjusting the color temperature of the first white field picture to a second preset color temperature to perform white balance correction, processing the picture obtained by the white balance correction after the white balance correction is completed to obtain a second white field picture, and adjusting the color temperature of the second white field picture to a third preset color temperature to perform white balance correction.
In one embodiment, the processor 1001 further performs the steps of:
acquiring an actual chromaticity value of a pixel point in the corrected display picture, and acquiring a standard chromaticity value of the pixel point;
determining a color difference according to the actual chromaticity value and the standard chromaticity value;
and when the color difference is smaller than or equal to the preset color difference, determining that the color quasi-correction is successful, and writing the 3D display lookup table into display equipment for performing the color quasi-correction.
In one embodiment, the processor 1001 further performs the steps of:
acquiring an actual chromaticity value of a pixel point in the corrected display picture, and acquiring a standard chromaticity value of the pixel point;
determining a color difference according to the actual chromaticity value and the standard chromaticity value;
and when the color difference is smaller than or equal to the preset color difference, determining that the color quasi-correction is successful, and writing the 3D display lookup table into display equipment for performing the color quasi-correction.
In one embodiment, the processor 1001 further performs the steps of:
acquiring target information, wherein the target information comprises at least one of the following: the current time point, the environment parameters, the voice information, the conference and the courses;
and displaying teaching scenes associated with the target information on the interactive interface when the target information meets the preset conditions.
In one embodiment, the processor 1001 further performs the steps of:
acquiring the brightness of a first white field picture;
and when the brightness is larger than the preset brightness, adjusting the color temperature of the first white field picture to the target color temperature for white balance correction.
In one embodiment, the processor 1001 further performs the steps of:
and outputting prompt information of failure of the color correction when the brightness is smaller than or equal to the preset brightness.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, etc., such as Read Only Memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.
Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (10)
1. A method for color correction, comprising:
receiving a 3D display lookup table corresponding to a first preset color temperature, and performing color quasi-correction on a display picture with the color temperature being the first preset color temperature according to the 3D display lookup table;
processing the corrected display picture to obtain a first white field picture;
and adjusting the color temperature of the first white field picture to a target color temperature for white balance correction, wherein the target color temperature comprises a second preset color temperature and a third preset color temperature.
2. The color correction method according to claim 1, wherein the step of adjusting the color temperature of the first white field picture to a target color temperature for white balance correction comprises:
respectively adjusting the color temperature of the first white field picture to a first preset color temperature and a second preset color temperature to carry out white balance correction;
or, adjusting the color temperature of the first white field picture to a second preset color temperature to perform white balance correction, processing the picture obtained by the white balance correction after the white balance correction is completed to obtain a second white field picture, and adjusting the color temperature of the second white field picture to a third preset color temperature to perform white balance correction.
3. The color correction method according to claim 1, wherein after the step of adjusting the color temperature of the first white field picture to a target color temperature for white balance correction, further comprising:
acquiring the corrected actual chromaticity value of the pixel point in the display picture, and acquiring the standard chromaticity value of the pixel point;
determining a color difference according to the actual chromaticity value and the standard chromaticity value;
and when the color difference is smaller than or equal to a preset color difference, determining that the color quasi-correction is successful, and writing the 3D display lookup table into display equipment for performing the color quasi-correction.
4. A color correction method according to claim 3, characterized in that after the step of determining a color difference from the actual chromaticity value and the standard chromaticity value, it further comprises:
and outputting prompt information of failure of color correction when the color difference is larger than a preset color difference.
5. The color correction method according to claim 1, 3 or 4, wherein the step of adjusting the color temperature of the first white field picture to a target color temperature for white balance correction comprises:
acquiring the brightness of the first white field picture;
and when the brightness is larger than the preset brightness, adjusting the color temperature of the first white field picture to a target color temperature for white balance correction.
6. The method according to claim 5, wherein after the step of obtaining the brightness of the first white field picture, further comprising:
and outputting prompt information of failure of color correction when the brightness is smaller than or equal to the preset brightness.
7. A color register correction device, comprising:
the receiving module is used for receiving a 3D display lookup table corresponding to the first preset color temperature and carrying out color quasi correction on a display picture of the display equipment according to the 3D display lookup table;
the processing module is used for processing the corrected display picture to obtain a first white field picture;
the correction module is used for adjusting the color temperature of the first white field picture to a target color temperature to carry out white balance correction, wherein the target color temperature comprises a second preset color temperature and a third preset color temperature.
8. A color correction apparatus, comprising: a display screen, a memory and a processor;
the display screen is used for displaying pictures;
the memory stores computer-executable instructions;
the processor executes computer-executable instructions stored in the memory, causing the color level correction device to perform the color level correction method of any one of claims 1 to 6.
9. A computer readable storage medium having stored therein computer executable instructions which when executed by a processor are adapted to implement the color correction method of any of claims 1 to 6.
10. An electronic device having stored therein computer-executable instructions which, when executed by a processor, are adapted to carry out the color level correction method according to any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111236255.4A CN116009801A (en) | 2021-10-22 | 2021-10-22 | Color correction method, storage medium and related device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111236255.4A CN116009801A (en) | 2021-10-22 | 2021-10-22 | Color correction method, storage medium and related device |
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| CN116009801A true CN116009801A (en) | 2023-04-25 |
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| CN202111236255.4A Pending CN116009801A (en) | 2021-10-22 | 2021-10-22 | Color correction method, storage medium and related device |
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