CN115731828A - Display correction method, device, nonvolatile storage medium and processor - Google Patents
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Abstract
The invention discloses a display correction method, a display correction device, a nonvolatile storage medium and a processor, wherein the display correction method comprises the following steps: acquiring multiple groups of first display parameters corresponding to the reference display equipment under multiple display gray scales, wherein each group of first display parameters comprises a first color coordinate and a first brightness value; acquiring first corresponding relation information, second corresponding relation information and third corresponding relation information; determining a plurality of groups of target display parameters of RGB three primary colors under an XYZ color space at least according to a plurality of groups of first display parameters; and determining Gamma RGB data of the display equipment to be debugged according to the multiple groups of target display parameters, the first corresponding relation information, the second corresponding relation information and the third corresponding relation information. The display correction method solves the problem that in the prior art, the adjustment is inaccurate when the Gamma adjustment is carried out on the display equipment to be debugged by referring to the reference display equipment.
Description
Technical Field
The invention relates to the field of display correction, in particular to a display correction method, a display correction device, a nonvolatile storage medium and a processor.
Background
In the manufacturing process of display equipment such as a display, the produced display equipment often needs to be corrected, gamma correction is an important step, the color coordinates and the brightness distribution curve of the display equipment under different brightness can be adjusted through Gamma correction, however, accurate Gamma correction is difficult to be carried out by referring to a contrast machine (reference display equipment) through manual adjustment of an image quality engineer, gamma correction can only be carried out according to standard color temperature, and then the color of the display equipment to be debugged approaches to the contrast machine through other means.
Therefore, the problem that in the prior art, the adjustment is inaccurate when the Gamma adjustment is performed on the display device to be debugged by referring to the reference display device exists.
In view of the above problems, no effective solution has been proposed.
The above information disclosed in the background section is only for enhancement of understanding of the background of the technology described herein. The background art may therefore contain certain information that does not form the known prior art to those skilled in the art.
Disclosure of Invention
The embodiment of the invention provides a display correction method and device, a nonvolatile storage medium and a processor, which are used for at least solving the problem that in the prior art, the adjustment is inaccurate when Gamma adjustment is carried out on display equipment to be debugged by referring to reference display equipment.
In order to achieve the above object, according to a first aspect of embodiments of the present invention, there is provided a display correction method including: acquiring multiple groups of first display parameters corresponding to the reference display equipment under multiple display gray scales, wherein each group of first display parameters comprises a first color coordinate and a first brightness value; acquiring first corresponding relation information, second corresponding relation information and third corresponding relation information, wherein the first corresponding relation information represents a corresponding relation between color intensity when the display device to be debugged displays a red picture and second display parameters under an XYZ color space, the second corresponding relation information represents a corresponding relation between the color intensity when the display device to be debugged displays a green picture and the third display parameters under the XYZ color space, and the third corresponding relation information represents a corresponding relation between the color intensity when the display device to be debugged displays a blue picture and the fourth display parameters under the XYZ color space; determining a plurality of groups of target display parameters of RGB three primary colors under an XYZ color space at least according to a plurality of groups of first display parameters; and determining Gamma RGB data of the display equipment to be debugged according to the multiple groups of target display parameters, the first corresponding relation information, the second corresponding relation information and the third corresponding relation information.
Further, the obtaining the first corresponding relationship information, the second corresponding relationship information, and the third corresponding relationship information includes: acquiring multiple groups of fifth display parameters when the display equipment to be debugged displays red pictures with different color intensities, multiple groups of sixth display parameters when the display equipment to be debugged displays green pictures with different color intensities, and multiple groups of seventh display parameters when the display equipment to be debugged displays blue pictures with different color intensities, wherein each group of fifth display parameters comprises a second color coordinate and a second brightness value, each group of sixth display parameters comprises a third color coordinate and a third brightness value, and each group of seventh display parameters comprises a fourth color coordinate and a fourth brightness value; calculating a plurality of groups of second display parameters, a plurality of groups of third display parameters and a plurality of groups of fourth display parameters according to the plurality of groups of fifth display parameters, the plurality of groups of sixth display parameters and the plurality of groups of seventh display parameters respectively; and determining first corresponding relation information at least according to different color intensities of the red picture and multiple groups of second display parameters, determining second corresponding relation information at least according to different color intensities of the green picture and multiple groups of third display parameters, and determining third corresponding relation information at least according to different color intensities of the blue picture and multiple groups of fourth display parameters.
Further, determining first corresponding relationship information at least according to different color intensities of a red picture and multiple groups of second display parameters, determining second corresponding relationship information at least according to different color intensities of a green picture and multiple groups of third display parameters, and determining third corresponding relationship information at least according to different color intensities of a blue picture and multiple groups of fourth display parameters, includes: expanding the group number of the second display parameter, the third display parameter and the fourth display parameter into a first preset group number by adopting a first interpolation algorithm; and determining first corresponding relation information according to different color intensities of the red pictures and second display parameters of the first preset group number, determining second corresponding relation information according to different color intensities of the green pictures and third display parameters of the first preset group number, and determining third corresponding relation information according to different color intensities of the blue pictures and fourth display parameters of the first preset group number.
Further, before acquiring the fifth display parameter, the sixth display parameter, and the seventh display parameter, acquiring the first correspondence information, the second correspondence information, and the third correspondence information, further comprising: and controlling to close all image quality processing algorithms of the display equipment to be debugged.
Further, determining a plurality of sets of target display parameters of three primary colors of RGB in the XYZ color space based at least on the plurality of sets of first display parameters includes: calculating to obtain multiple groups of reference display parameters of three primary colors of RGB in an XYZ color space by taking the first color coordinates of each group of first display parameters as target values; calculating a plurality of display brightnesses corresponding to the plurality of groups of reference display parameters; and determining part of the reference display parameters in the multiple groups of reference display parameters as multiple groups of target display parameters, wherein the similarity between the distribution curves of the display brightness corresponding to the multiple groups of target display parameters and the distribution curves of the first brightness values corresponding to the multiple groups of first display parameters meets a preset condition.
Further, before calculating the plurality of sets of reference display parameters of the three primary colors of RGB in the XYZ color space using the first color coordinates of each set of first display parameters as the target values, determining the plurality of sets of target display parameters of the three primary colors of RGB in the XYZ color space based on at least the plurality of sets of first display parameters further includes: and expanding the group number of the first display parameters into a second preset group number by adopting a second interpolation algorithm.
Further, the second display parameters comprise RX, RY and RZ, the third display parameters comprise GX, GY and GZ, and the fourth display parameters comprise BX, BY and BZ; the target display parameters comprise a target RX value, a target RY value, a target RZ value, a target GX value, a target GY value, a target GZ value, a target BX value, a target BY value and a target BZ value; the reference display parameters each include a reference RX value, a reference RY value, a reference RZ value, a reference GX value, a reference GY value, a reference GZ value, a reference BX value, a reference BY value, and a reference BZ value.
According to a second aspect of the embodiments of the present invention, there is provided a display correction apparatus including: the display device comprises a first acquisition unit, a second acquisition unit and a display unit, wherein the first acquisition unit is used for acquiring a plurality of groups of first display parameters corresponding to the reference display device under a plurality of display gray scales, and each group of first display parameters comprises a first color coordinate and a first brightness value; the second obtaining unit is used for obtaining first corresponding relation information, second corresponding relation information and third corresponding relation information, wherein the first corresponding relation information represents a corresponding relation between color intensity when the display device to be debugged displays a red picture and second display parameters under an XYZ color space, the second corresponding relation information represents a corresponding relation between the color intensity when the display device to be debugged displays a green picture and the third display parameters under the XYZ color space, and the third corresponding relation information represents a corresponding relation between the color intensity when the display device to be debugged displays a blue picture and the fourth display parameters under the XYZ color space; a first determination unit configured to determine a plurality of sets of target display parameters of three primary colors of RGB in an XYZ color space, based on at least the plurality of sets of first display parameters; and the second determining unit is used for determining Gamma RGB data of the display equipment to be debugged according to the multiple groups of target display parameters, the first corresponding relation information, the second corresponding relation information and the third corresponding relation information.
According to a third aspect of the embodiments of the present invention, there is provided a nonvolatile storage medium including a stored program, wherein a device in which the nonvolatile storage medium is controlled to execute the above-described display correction method when the program is executed.
According to a fourth aspect of the embodiments of the present invention, there is provided a processor for executing a program, wherein the program executes the display correction method described above.
According to a fifth aspect of the embodiments of the present invention, there is provided a display correction apparatus, including a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor implementing the display correction method described above when executing the computer program.
The display correction method applying the technical scheme of the invention comprises the following steps: acquiring multiple groups of first display parameters corresponding to the reference display equipment under multiple display gray scales, wherein each group of first display parameters comprises a first color coordinate and a first brightness value; acquiring first corresponding relation information, second corresponding relation information and third corresponding relation information, wherein the first corresponding relation information represents a corresponding relation between color intensity when the display device to be debugged displays a red picture and second display parameters under an XYZ color space, the second corresponding relation information represents a corresponding relation between the color intensity when the display device to be debugged displays a green picture and the third display parameters under the XYZ color space, and the third corresponding relation information represents a corresponding relation between the color intensity when the display device to be debugged displays a blue picture and the fourth display parameters under the XYZ color space; determining a plurality of groups of target display parameters of RGB three primary colors under an XYZ color space at least according to a plurality of groups of first display parameters; and determining Gamma RGB data of the display equipment to be debugged according to the multiple groups of target display parameters, the first corresponding relation information, the second corresponding relation information and the third corresponding relation information. The method comprises the steps of obtaining first display parameters of reference display equipment, determining target display parameters of RGB three primary colors in an XYZ color space according to the first display parameters, and determining Gamma RGB data of the display equipment to be debugged according to first corresponding relation information, second corresponding relation information and third corresponding relation information of different color intensities and the XYZ color space when the display equipment to be debugged displays RGB colors, so that the display effect of the display equipment to be debugged is closer to that of the reference display equipment when the display equipment to be debugged displays each gray-scale picture. Therefore, gamma adjustment can be performed on the display device to be debugged in a more targeted manner, the display effect of the display device to be debugged is closer to that of the reference display device, and the problem of inaccurate adjustment when the Gamma adjustment is performed on the display device to be debugged by referring to the reference display device in the prior art is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic flow chart diagram of an alternative embodiment of a display correction method according to the present invention;
fig. 2 is a schematic diagram of an alternative embodiment of a display correction apparatus according to the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Also, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.
Fig. 1 is a display correction method according to an embodiment of the present invention, as shown in fig. 1, the method including the steps of:
step S102, acquiring multiple groups of first display parameters corresponding to the reference display equipment under multiple display gray scales, wherein each group of first display parameters comprises a first color coordinate and a first brightness value;
step S104, obtaining first corresponding relation information, second corresponding relation information and third corresponding relation information, wherein the first corresponding relation information represents a corresponding relation between color intensity when the display device to be debugged displays a red picture and second display parameters under an XYZ color space, the second corresponding relation information represents a corresponding relation between the color intensity when the display device to be debugged displays a green picture and the third display parameters under the XYZ color space, and the third corresponding relation information represents a corresponding relation between the color intensity when the display device to be debugged displays a blue picture and the fourth display parameters under the XYZ color space;
step S106, determining a plurality of groups of target display parameters of RGB three primary colors in an XYZ color space at least according to a plurality of groups of first display parameters;
and S108, determining Gamma RGB data of the display equipment to be debugged according to the multiple groups of target display parameters, the first corresponding relation information, the second corresponding relation information and the third corresponding relation information.
The display correction method adopting the scheme comprises the following steps: acquiring multiple groups of first display parameters corresponding to the reference display equipment under multiple display gray scales, wherein each group of first display parameters comprises a first color coordinate and a first brightness value; acquiring first corresponding relation information, second corresponding relation information and third corresponding relation information, wherein the first corresponding relation information represents a corresponding relation between color intensity when the display device to be debugged displays a red picture and second display parameters under an XYZ color space, the second corresponding relation information represents a corresponding relation between the color intensity when the display device to be debugged displays a green picture and the third display parameters under the XYZ color space, and the third corresponding relation information represents a corresponding relation between the color intensity when the display device to be debugged displays a blue picture and the fourth display parameters under the XYZ color space; determining a plurality of groups of target display parameters of three primary colors of RGB in an XYZ color space at least according to the plurality of groups of first display parameters; and determining Gamma RGB data of the display equipment to be debugged according to the multiple groups of target display parameters, the first corresponding relation information, the second corresponding relation information and the third corresponding relation information. The method comprises the steps of obtaining first display parameters of reference display equipment, determining target display parameters of RGB three primary colors in an XYZ color space according to the first display parameters, and determining Gamma RGB data of the display equipment to be debugged according to first corresponding relation information, second corresponding relation information and third corresponding relation information of different color intensities and the XYZ color space when the display equipment to be debugged displays RGB colors, so that the display effect of the display equipment to be debugged is closer to that of the reference display equipment when the display equipment to be debugged displays each gray-scale picture. Therefore, gamma adjustment can be performed on the display device to be debugged in a more targeted manner, the display effect of the display device to be debugged is closer to that of the reference display device, and the problem of inaccurate adjustment when the Gamma adjustment is performed on the display device to be debugged by referring to the reference display device in the prior art is solved.
Specifically, the obtaining of the first corresponding relationship information, the second corresponding relationship information, and the third corresponding relationship information includes: acquiring multiple groups of fifth display parameters when the display equipment to be debugged displays red pictures with different color intensities, multiple groups of sixth display parameters when the display equipment to be debugged displays green pictures with different color intensities, and multiple groups of seventh display parameters when the display equipment to be debugged displays blue pictures with different color intensities, wherein each group of fifth display parameters comprises a second color coordinate and a second brightness value, each group of sixth display parameters comprises a third color coordinate and a third brightness value, and each group of seventh display parameters comprises a fourth color coordinate and a fourth brightness value; calculating a plurality of groups of second display parameters, a plurality of groups of third display parameters and a plurality of groups of fourth display parameters according to the plurality of groups of fifth display parameters, the plurality of groups of sixth display parameters and the plurality of groups of seventh display parameters respectively; and determining first corresponding relation information at least according to different color intensities of the red picture and multiple groups of second display parameters, determining second corresponding relation information at least according to different color intensities of the green picture and multiple groups of third display parameters, and determining third corresponding relation information at least according to different color intensities of the blue picture and multiple groups of fourth display parameters.
When the display device to be debugged displays the RGB images with different color intensities, data such as color coordinates, brightness values and the like can be directly read through a color temperature instrument and the like, so that corresponding fifth display parameters, sixth display parameters and seventh display parameters can be directly obtained. And then according to the fifth display parameter, the sixth display parameter and the seventh display parameter, adopting a color space conversion algorithm to obtain a second display parameter, a third display parameter and a fourth display parameter in an XYZ color space, and at this time, determining first corresponding relationship information between the color intensity of the red picture and the second display parameter, second corresponding relationship information between the color intensity of the green picture and the third display parameter, and third corresponding relationship information between the color intensity of the blue picture and the fourth display parameter.
Of course, in the process of acquiring the first corresponding relationship information, the second corresponding relationship information, and the third corresponding relationship information, the more the number of the acquired fifth display parameters, the sixth display parameters, and the seventh display parameters is, the more accurate the finally determined first corresponding relationship information, the second corresponding relationship information, and the third corresponding relationship information are.
Specifically, determining first corresponding relationship information at least according to different color intensities of a red picture and multiple groups of second display parameters, determining second corresponding relationship information at least according to different color intensities of a green picture and multiple groups of third display parameters, and determining third corresponding relationship information at least according to different color intensities of a blue picture and multiple groups of fourth display parameters includes: expanding the group number of the second display parameter, the third display parameter and the fourth display parameter into a first preset group number by adopting a first interpolation algorithm; and determining first corresponding relation information according to different color intensities of the red pictures and second display parameters of the first preset group number, determining second corresponding relation information according to different color intensities of the green pictures and third display parameters of the first preset group number, and determining third corresponding relation information according to different color intensities of the blue pictures and fourth display parameters of the first preset group number.
In this embodiment, the interpolation algorithm is used to interpolate the group numbers of the second display parameter, the third display parameter, and the fourth display parameter into the first preset group number, so as to increase the data amount, and then the first correspondence information, the second correspondence information, and the third correspondence information are determined according to the interpolation algorithm, which is beneficial to obtaining more accurate first correspondence information, second correspondence information, and third correspondence information.
Specifically, before acquiring the fifth display parameter, the sixth display parameter, and the seventh display parameter, acquiring the first correspondence information, the second correspondence information, and the third correspondence information, further includes: and controlling to close all image quality processing algorithms of the display equipment to be debugged.
Before acquiring the fifth display parameter, the sixth display parameter and the seventh display parameter of the display device to be debugged, controlling to close all image quality processing algorithms of the display device to be debugged, and for a common display, closing all the image quality processing algorithms, namely setting the image quality processing algorithms to be in a PQ bypass state.
Specifically, determining a plurality of sets of target display parameters of three primary colors of RGB in an XYZ color space based on at least a plurality of sets of first display parameters includes: calculating to obtain multiple groups of reference display parameters of three primary colors of RGB in an XYZ color space by taking the first color coordinates of each group of first display parameters as target values; calculating a plurality of display brightness corresponding to the plurality of groups of reference display parameters; and determining part of the reference display parameters in the multiple groups of reference display parameters as multiple groups of target display parameters, wherein the similarity between the distribution curves of the display brightness corresponding to the multiple groups of target display parameters and the distribution curves of the first brightness values corresponding to the multiple groups of first display parameters meets a preset condition.
In specific implementation, the similarity between the distribution curves of the plurality of display luminances corresponding to the plurality of sets of target display parameters and the distribution curves of the plurality of first luminance values corresponding to the plurality of sets of first display parameters meets a predetermined condition, the similarity between the distribution curves of the plurality of display luminances corresponding to the plurality of sets of target display parameters completely matches, or the similarity between the distribution curves of the plurality of display luminances corresponding to the plurality of sets of first display parameters reaches a certain threshold, that is, the similarity between the trends of the distribution curves of the plurality of display luminances and the distribution curves of the first luminance values reaches a certain threshold.
Specifically, before calculating the plurality of sets of reference display parameters of the three primary colors of RGB in the XYZ color space using the first color coordinates of each set of first display parameters as the target values, determining the plurality of sets of target display parameters of the three primary colors of RGB in the XYZ color space based on at least the plurality of sets of first display parameters further includes: and expanding the group number of the first display parameters into a second preset group number by adopting a second interpolation algorithm.
The first interpolation algorithm and the second interpolation algorithm may be the same algorithm or may be different algorithms. For example, in the present embodiment, the first interpolation algorithm and the second interpolation algorithm are both linear interpolation methods.
The set number of the first display parameters is expanded to the second preset set number by adopting the second interpolation algorithm, so that the target display parameters with more sets can be favorably determined, and the determined Gamma RGB data of the display equipment to be debugged is more accurate. Of course, the second predetermined number of groups may be the same as or different from the first predetermined number of groups.
Specifically, the second display parameters include RX, RY and RZ, the third display parameters include GX, GY and GZ, and the fourth display parameters include BX, BY and BZ; the target display parameters comprise a target RX value, a target RY value, a target RZ value, a target GX value, a target GY value, a target GZ value, a target BX value, a target BY value and a target BZ value; the reference display parameters each include a reference RX value, a reference RY value, a reference RZ value, a reference GX value, a reference GY value, a reference GZ value, a reference BX value, a reference BY value, and a reference BZ value.
Next, as shown in fig. 2, an embodiment of the present invention further provides a display correction apparatus, including: the display device comprises a first acquisition unit, a second acquisition unit and a display unit, wherein the first acquisition unit is used for acquiring a plurality of groups of first display parameters corresponding to the reference display device under a plurality of display gray scales, and each group of first display parameters comprises a first color coordinate and a first brightness value; the second obtaining unit is used for obtaining first corresponding relation information, second corresponding relation information and third corresponding relation information, wherein the first corresponding relation information represents a corresponding relation between color intensity when the display device to be debugged displays a red picture and second display parameters under an XYZ color space, the second corresponding relation information represents a corresponding relation between the color intensity when the display device to be debugged displays a green picture and the third display parameters under the XYZ color space, and the third corresponding relation information represents a corresponding relation between the color intensity when the display device to be debugged displays a blue picture and the fourth display parameters under the XYZ color space; a first determination unit configured to determine a plurality of sets of target display parameters of three primary colors of RGB in an XYZ color space, based on at least the plurality of sets of first display parameters; and the second determining unit is used for determining Gamma RGB data of the display equipment to be debugged according to the multiple groups of target display parameters, the first corresponding relation information, the second corresponding relation information and the third corresponding relation information.
Specifically, the second obtaining unit comprises an obtaining module, a first calculating module and a first determining module: the acquisition module is used for acquiring multiple groups of fifth display parameters when the display equipment to be debugged displays red pictures with different color intensities, multiple groups of sixth display parameters when the display equipment to be debugged displays green pictures with different color intensities and multiple groups of seventh display parameters when the display equipment to be debugged displays blue pictures with different color intensities, wherein each group of fifth display parameters comprises a second color coordinate and a second brightness value, each group of sixth display parameters comprises a third color coordinate and a third brightness value, and each group of seventh display parameters comprises a fourth color coordinate and a fourth brightness value; the first calculation module is used for calculating a plurality of groups of second display parameters, a plurality of groups of third display parameters and a plurality of groups of fourth display parameters according to the plurality of groups of fifth display parameters, the plurality of groups of sixth display parameters and the plurality of groups of seventh display parameters; the first determining module is used for determining first corresponding relation information at least according to different color intensities of the red picture and multiple groups of second display parameters, determining second corresponding relation information at least according to different color intensities of the green picture and multiple groups of third display parameters, and determining third corresponding relation information at least according to different color intensities of the blue picture and multiple groups of fourth display parameters.
Specifically, the first determination module includes an interpolation sub-module and a determination sub-module: the interpolation submodule is used for expanding the group number of the second display parameter, the third display parameter and the fourth display parameter into a first preset group number by adopting a first interpolation algorithm; the determining submodule is used for determining first corresponding relation information according to different color intensities of the red pictures and second display parameters of the first preset group number, determining second corresponding relation information according to different color intensities of the green pictures and third display parameters of the first preset group number, and determining third corresponding relation information according to different color intensities of the blue pictures and fourth display parameters of the first preset group number.
Specifically, the second obtaining unit further includes a control module: the control module is used for controlling and closing all image quality processing algorithms of the display equipment to be debugged before acquiring the fifth display parameter, the sixth display parameter and the seventh display parameter.
Specifically, the first determination unit includes a second calculation module, a third calculation module, and a second determination module: the second calculation module is used for calculating multiple groups of reference display parameters of three primary colors of RGB in an XYZ color space by taking the first color coordinates of each group of first display parameters as target values; the third calculating module is used for calculating a plurality of display brightness corresponding to the plurality of groups of reference display parameters; the second determining module is configured to determine that a part of the reference display parameters in the multiple sets of reference display parameters is multiple sets of target display parameters, where a similarity between a distribution curve of a plurality of display luminances corresponding to the multiple sets of target display parameters and a distribution curve of a plurality of first luminance values corresponding to the multiple sets of first display parameters meets a predetermined condition.
Specifically, the first determining unit further includes an interpolation module, and the interpolation module is configured to expand the number of sets of the first display parameters to a second preset number by using a second interpolation algorithm before calculating multiple sets of reference display parameters of three primary colors of RGB in the XYZ color space by using the first color coordinates of each set of the first display parameters as the target values.
Specifically, the second display parameters comprise RX, RY and RZ, the third display parameters comprise GX, GY and GZ, and the fourth display parameters comprise BX, BY and BZ; the target display parameters comprise a target RX value, a target RY value, a target RZ value, a target GX value, a target GY value, a target GZ value, a target BX value, a target BY value and a target BZ value; the reference display parameters each include a reference RX value, a reference RY value, a reference RZ value, a reference GX value, a reference GY value, a reference GZ value, a reference BX value, a reference BY value, and a reference BZ value.
In addition, the embodiment of the invention also provides a nonvolatile storage medium, the nonvolatile storage medium comprises a stored program, and the device where the nonvolatile storage medium is located is controlled to execute the display correction method when the program runs.
The embodiment of the invention further provides a processor, which is used for running the program, wherein the program executes the display correction method when running.
Finally, an embodiment of the present invention further provides a display correction apparatus, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the display correction method when executing the computer program.
In this embodiment, the display correction of the television is taken as an example for description, reference is made to the display device as a comparison machine, and the display device to be debugged is a television to be produced, and the method mainly includes the following steps in implementation:
1. the computer is connected with the color temperature instrument through a USB interface and outputs signals to the reference comparison machine through an HDMI interface.
2. The computer outputs a gray scale test picture (such as 8, 16 or 32 gray scales) to the contrast machine through the HDMI interface, and reads the x coordinate, the y coordinate and the brightness Lv value (a first display parameter) of the picture when the contrast machine displays different gray scales through the color thermometer.
3. The data read by the color temperature instrument is interpolated into 4096 points by an interpolation algorithm, so that a brightness distribution curve of the contrast machine and x and y coordinate values under different brightness are simulated.
4. The computer is connected with the color temperature instrument through a USB interface and outputs signals to the television to be produced through the HDMI line.
5. And setting the television to be produced to be in a PQ bypass state, namely closing all image quality processing algorithms.
6. The computer outputs full black field and RGB different color picture to the TV set to be produced, and reads the color temperature coordinate x, y and Lv value of the invisible picture through the color temperature instrument. That is, a full black field, a red picture with different color intensities, a green picture with different color intensities, and a blue picture with different color intensities are output to the television to be produced, and color temperature coordinates x, y and a brightness Lv value are read by a color temperature meter (the fifth display parameter, the sixth display parameter, and the seventh display parameter are respectively obtained corresponding to red, green, and blue). For example, in one embodiment, when a red picture is output to a television to be produced, the color intensities of the output are 32, 64, 96, 128, 160, 192, 224, 255, respectively; when a green picture is output to the television to be produced, the output color intensities are respectively 32, 64, 96, 128, 160, 192, 224 and 255; when a blue picture is output to the television to be produced, the color intensities of the output are 32, 64, 96, 128, 160, 192, 224, 255, respectively.
7. Converting X, Y and Lv values of a color picture into X, Y and Z values according to a color model conversion formula, interpolating each color of red, green and blue into 4096 points BY an interpolation algorithm, and obtaining red RX, RY and RZ distribution, green GX, GY and GZ distribution and blue BX, BY and BZ distribution of a machine to be produced. That is, the fifth display parameter, the sixth display parameter, and the seventh display parameter are respectively and correspondingly converted into the second display parameter, the third display parameter, and the fourth display parameter of the XYZ color space by the color space conversion algorithm. The second display parameter, the third display parameter, and the fourth display parameter are all expanded into 4096 groups by an interpolation algorithm.
Taking a red frame with a color intensity of 255 and a green frame with a color intensity of 224 as an example, the color space conversion formula is as follows:
R Y 255 ＝RLv 255 ；
G Y 224 ＝GLv 224 ；
wherein, RX 255 ，RY 255 And RZ 255 When a television to be produced displays a red picture with the color intensity of 255, the X, Y and Z values are obtained through a color model conversion formula; GX 224 ，GY 224 And GZ 224 And when the television to be produced displays a red picture with the color intensity of 224, obtaining the X, Y and Z values through a color model conversion formula.
Based on the above formula, RX, RY, RZ values corresponding to displaying 32, 64, 96, 128, 160, 192, 224, 255 and other color intensities can be calculated for the red screen; the corresponding GX, GY and GZ values when displaying the color intensities of 32, 64, 96, 128, 160, 192, 224, 255 and the like can be respectively calculated for the green picture; for the blue screen, BX, BY, and BZ values corresponding to the display of color intensities such as 32, 64, 96, 128, 160, 192, 224, and 255 can be calculated. And then, BY adopting a difference algorithm, the difference value of the RX, RY and RZ values of the red picture, the GX, GY and GZ values of the green picture and the BX, BY and BZ values of the blue picture can be 4096 groups.
8. According to the 4096 sets of RX, RY and RZ values generated above, 4096 sets of GX, GY and GZ values and 4096 sets of BX, BY and BZ values, color temperature coordinates x and y (first color coordinates of the first display parameters) of the contrast machine 4096 brightness gray levels are set as target coordinates, and Gamma RGB data with each point consistent with the color temperature coordinates of the contrast machine is generated.
The formula is as follows:
color temperature coordinate
Color temperature coordinate
Luminance L v ＝RY+GY+BY。
Wherein, W x And W y I.e. a set of color temperature coordinates, L v The picture brightness corresponding to the set of color temperature coordinates, that is, the color temperature coordinates x and y of the contrast machine under 4096 brightness gray levels are respectively and correspondingly taken as W x And W y Several sets of RX, RY, RZ, GX, GY, GZ, BX, BY, BZ can be calculated. And then according to RX, RY, RZ, GX, GY, GZ, BX, BY and BZ values which correspond to the television to be produced under 4096 color intensities when displaying the RGB various color pictures, gamma RGB data with each point consistent with the color temperature coordinate of the contrast machine can be generated, so that the colors of the television to be produced when displaying various pictures are consistent with or similar to the color of the contrast machine.
9. The brightness of each point in the data generated above is calculated and 256 points are sampled from the data, and the brightness distribution curve of the 256 points is required to be consistent with the distribution curve trend of the brightness distribution data of 4096 points of the contrast machine. Therefore, the Gamma coefficient of the machine to be generated is consistent with the Gamma coefficient of the contrast machine, and proper Gamma RGB data is determined, so that the color and brightness distribution of the television to be produced when displaying various pictures are consistent with or similar to those of the contrast machine.
10. And outputting the code configuration of the Gamma data according to different schemes.
For example, when a customer requests the card vendor to send a picture quality engineer to a client to debug the picture quality of a display device such as a television set to be produced with reference to a customer comparison machine (generally, a television of another brand). According to the prior situation, after the image quality engineer arrives at the client, the Gamma data needs to be calibrated for the produced television according to the standard 9300 color temperature, and then the color approaches the contrast machine as much as possible by other means.
By using the display correction method of the technical scheme of the invention, the board card supplier can send the software tool using the method to a customer field engineer, use a computer to output a test picture to the machine, read the color data of the contrast machine and the machine to be produced by the color thermometer, calculate the Gamma data of which the brightness distribution curve is consistent with the contrast machine and the color temperature is consistent with the contrast machine under each brightness, generate the scheme corresponding code, configure and send the scheme corresponding code to the board card supplier to manufacture software. Therefore, the image quality debugging requirements of clients can be quickly met under the condition of no need of image quality engineers.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments. Moreover, the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions, and while a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than here.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technical content can be implemented in other manners. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and amendments can be made without departing from the principle of the present invention, and these modifications and amendments should also be considered as the protection scope of the present invention.
Claims (11)
1. A display correction method, comprising:
acquiring multiple groups of first display parameters corresponding to reference display equipment under multiple display gray scales, wherein each group of first display parameters comprises a first color coordinate and a first brightness value;
acquiring first corresponding relation information, second corresponding relation information and third corresponding relation information, wherein the first corresponding relation information represents a corresponding relation between color intensity when a display device to be debugged displays a red picture and second display parameters under an XYZ color space, the second corresponding relation information represents a corresponding relation between the color intensity when the display device to be debugged displays a green picture and the third display parameters under the XYZ color space, and the third corresponding relation information represents a corresponding relation between the color intensity when the display device to be debugged displays a blue picture and the fourth display parameters under the XYZ color space;
determining a plurality of groups of target display parameters of three primary colors of RGB in an XYZ color space at least according to the plurality of groups of first display parameters;
and determining Gamma RGB data of the display equipment to be debugged according to the multiple groups of target display parameters, the first corresponding relation information, the second corresponding relation information and the third corresponding relation information.
2. The display correction method according to claim 1, wherein acquiring the first correspondence information, the second correspondence information, and the third correspondence information includes:
acquiring multiple groups of fifth display parameters when the display equipment to be debugged displays red pictures with different color intensities, multiple groups of sixth display parameters when the display equipment to be debugged displays green pictures with different color intensities, and multiple groups of seventh display parameters when the display equipment to be debugged displays blue pictures with different color intensities, wherein each group of fifth display parameters comprises a second color coordinate and a second brightness value, each group of sixth display parameters comprises a third color coordinate and a third brightness value, and each group of seventh display parameters comprises a fourth color coordinate and a fourth brightness value;
calculating a plurality of groups of second display parameters, a plurality of groups of third display parameters and a plurality of groups of fourth display parameters according to a plurality of groups of fifth display parameters, a plurality of groups of sixth display parameters and a plurality of groups of seventh display parameters respectively;
determining the first corresponding relation information at least according to the different color intensities of the red picture and the multiple groups of second display parameters, determining the second corresponding relation information at least according to the different color intensities of the green picture and the multiple groups of third display parameters, and determining the third corresponding relation information at least according to the different color intensities of the blue picture and the multiple groups of fourth display parameters.
3. The method according to claim 2, wherein determining the first correspondence information according to at least different color intensities of the red color frame and a plurality of sets of the second display parameters, determining the second correspondence information according to at least different color intensities of the green color frame and a plurality of sets of the third display parameters, and determining the third correspondence information according to at least different color intensities of the blue color frame and a plurality of sets of the fourth display parameters comprises:
expanding the group number of the second display parameter, the third display parameter and the fourth display parameter to a first preset group number by adopting a first interpolation algorithm;
determining the first corresponding relation information according to the different color intensities of the red pictures and the second display parameters of the first preset group number, determining the second corresponding relation information according to the different color intensities of the green pictures and the third display parameters of the first preset group number, and determining the third corresponding relation information according to the different color intensities of the blue pictures and the fourth display parameters of the first preset group number.
4. The display correction method according to claim 2, wherein acquiring first correspondence information, second correspondence information, and third correspondence information before acquiring the fifth display parameter, the sixth display parameter, and the seventh display parameter, further comprises:
and controlling to close all image quality processing algorithms of the display equipment to be debugged.
5. The display correction method according to claim 1, wherein determining a plurality of sets of target display parameters of three primary colors of RGB in an XYZ color space based on at least a plurality of sets of the first display parameters comprises:
calculating to obtain multiple groups of reference display parameters of three primary colors of RGB in an XYZ color space by taking the first color coordinates of each group of the first display parameters as target values;
calculating a plurality of display brightness corresponding to the plurality of groups of reference display parameters;
and determining that part of the reference display parameters in the multiple groups of reference display parameters are multiple groups of target display parameters, wherein the similarity between the distribution curves of the display brightness corresponding to the multiple groups of target display parameters and the distribution curves of the first brightness values corresponding to the multiple groups of first display parameters meets a preset condition.
6. The display correction method according to claim 5, wherein, before calculating the plurality of sets of reference display parameters of the three primary colors of RGB in the XYZ color space with the first color coordinates of the respective sets of the first display parameters as the target values, determining the plurality of sets of target display parameters of the three primary colors of RGB in the XYZ color space based on at least the plurality of sets of the first display parameters further comprises:
and expanding the group number of the first display parameters into a second preset group number by adopting a second interpolation algorithm.
7. The display correction method according to claim 5,
the second display parameters comprise RX, RY and RZ, the third display parameters comprise GX, GY and GZ, and the fourth display parameters comprise BX, BY and BZ;
the target display parameters comprise a target RX value, a target RY value, a target RZ value, a target GX value, a target GY value, a target GZ value, a target BX value, a target BY value and a target BZ value;
the reference display parameters each include a reference RX value, a reference RY value, a reference RZ value, a reference GX value, a reference GY value, a reference GZ value, a reference BX value, a reference BY value, and a reference BZ value.
8. A display correction apparatus, comprising:
the display device comprises a first acquisition unit, a second acquisition unit and a display unit, wherein the first acquisition unit is used for acquiring a plurality of groups of first display parameters corresponding to reference display equipment under a plurality of display gray scales, and each group of the first display parameters comprises a first color coordinate and a first brightness value;
a second obtaining unit, configured to obtain first correspondence information, second correspondence information, and third correspondence information, where the first correspondence information represents a correspondence between color intensity when a display device to be debugged displays a red screen and second display parameters in an XYZ color space, the second correspondence information represents a correspondence between color intensity when the display device to be debugged displays a green screen and third display parameters in the XYZ color space, and the third correspondence information represents a correspondence between color intensity when the display device to be debugged displays a blue screen and fourth display parameters in the XYZ color space;
a first determination unit, configured to determine multiple sets of target display parameters of three primary colors of RGB in an XYZ color space according to at least the multiple sets of the first display parameters;
and the second determining unit is used for determining Gamma RGB data of the display equipment to be debugged according to the multiple groups of target display parameters, the first corresponding relation information, the second corresponding relation information and the third corresponding relation information.
9. A non-volatile storage medium, characterized in that the non-volatile storage medium comprises a stored program, wherein a device in which the non-volatile storage medium is located is controlled to perform the display correction method of any one of claims 1 to 7 when the program is run.
10. A processor configured to run a program, wherein the program is configured to perform the display correction method of any one of claims 1 to 7 when running.
11. A display correction apparatus comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the display correction method of any one of claims 1 to 7 when executing the computer program.
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