CN114495816A - Display image adjusting method, terminal device and computer readable storage medium - Google Patents
Display image adjusting method, terminal device and computer readable storage medium Download PDFInfo
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- CN114495816A CN114495816A CN202011155681.0A CN202011155681A CN114495816A CN 114495816 A CN114495816 A CN 114495816A CN 202011155681 A CN202011155681 A CN 202011155681A CN 114495816 A CN114495816 A CN 114495816A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
Abstract
The invention provides a display image adjusting method, terminal equipment and a computer readable storage medium, wherein the method comprises the following steps: acquiring brightness data of a target image, wherein the target image is a brightness image obtained by shooting a display image of a display; determining gray scale compensation data corresponding to the display image according to the brightness data; and adjusting the display image according to the gray scale compensation data to obtain the adjusted display image. The brightness data of each gray scale of the display image is extracted to obtain the gray scale compensation data of each gray scale, and the brightness of each primary color of the color cast region and the brightness uneven region of the display is compensated in a gray scale compensation mode, so that the color Mura of the display is quickly and accurately removed, and the display effect of the display is improved.
Description
Technical Field
The present invention relates to the field of graph processing technologies, and in particular, to a display image adjusting method, a terminal device, and a computer-readable storage medium.
Background
The display has important application in actual life and production; the display effect of the display gives people the most direct sensory experience, and is also an important part of the display equipment in the production and manufacturing process, and the good display effect can bring people better viewing experience.
In the production process of the display, due to the influence of factors such as process, material, operation technique and the like, the display has the phenomenon of uneven brightness and darkness or color cast, namely the color Mura phenomenon, in more than one pixel area, so the color Mura needs to be removed to achieve a better display effect. At present, the Mura removing technology mainly aims at removing Mura with uneven brightness and darkness, and the technology for removing color Mura with color cast is relatively less. The traditional Mura removing technology can well remove Mura with uneven brightness of the display panel, but has small effect on the regional color cast phenomenon.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the foregoing deficiencies of the prior art, it is an object of the present invention to provide a method for adjusting a display image, a terminal device and a computer readable storage medium, which can remove color Mura from a display quickly and accurately to eliminate the brightness unevenness and color shift of the display.
The technical scheme of the invention is as follows:
in a first aspect, the present invention provides a display image adjusting method, including:
acquiring brightness data of a target image, wherein the target image is a brightness image obtained by shooting a display image on a display;
determining gray scale compensation data corresponding to the display image according to the brightness data;
and adjusting the display image according to the gray scale compensation data to obtain the adjusted display image.
In a second aspect, the present invention provides a terminal device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the display image adjusting method as described above when executing the computer program.
In a third aspect, the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the display image adjustment method as described above.
Has the advantages that: the invention provides a display image adjusting method, which obtains the brightness data of a target image, then determines the gray scale compensation data corresponding to the display image according to the brightness data, and then adjusts the display image according to the gray scale compensation data to obtain the adjusted display image. The color cast region and the uneven brightness region of the display are compensated in a gray level compensation mode, so that color Mura is removed quickly and accurately, the display effect of the display is improved, and the display has a good market application prospect.
Drawings
FIG. 1 is a flowchart illustrating an exemplary embodiment of a method for adjusting a display image according to the present invention.
FIG. 2 is a diagram illustrating image rectification according to an embodiment of the present invention.
FIG. 3 is a schematic diagram of a gray scale layer displaying an image adjusting method according to the present invention.
Fig. 4 is a schematic block diagram of an internal structure of a terminal device according to the present invention.
Detailed Description
The present invention provides a display image adjusting method, a terminal device and a computer readable storage medium, and the present invention is further described in detail below in order to make the objects, technical solutions and effects of the present invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Generally, in the production process of a display, due to the influence of various factors, the final display effect of the display may have a phenomenon of uneven brightness or regional color shift, i.e., color Mura. However, the existing methods for removing Mura of the display are mainly directed to removing Mura with uneven brightness of the display panel, and these methods for removing Mura can well remove Mura with uneven brightness of the display panel, but cannot effectively remove the regional color cast phenomenon.
Referring to fig. 1, fig. 1 is a flowchart of a display image adjusting method according to an embodiment of the present invention, where the display image adjusting method includes the following steps:
and S1, the terminal equipment acquires the brightness data of the target image.
Specifically, the target image is a luminance image obtained by photographing a display image on a display, and in order to eliminate color Mura appearing in the display image, luminance data of the display image is acquired first. The display image of the display can be photographed by a brightness data acquisition device such as an imaging luminance meter, an industrial camera, a brightness sensor, etc., so as to obtain a brightness image of the display image, wherein the brightness image has the brightness data of the display image. The display includes, but is not limited to, an LCD display, an OLED display, a QLED display, or a micro _ LED display.
In one implementation, due to the problem of the shooting angle, the display image in the target image may be inclined or distorted, and if the luminance data is directly extracted from the display image region in the target image, an error may occur, which may affect the removal effect of the color Mura. Step S1 includes:
and S11, the terminal device acquires the target images, and performs image correction processing on the display image area of each target image to obtain the corrected display image area.
Specifically, the display image area in the target image is a display image on the display. The luminance data of the display image is extracted from the display image area in the target image, and the inclination and distortion phenomena of the display image area in the target image bring errors to the processing of the subsequent luminance data, so the display image area needs to be corrected. Step S11 includes:
and S111, aiming at each target image, the terminal equipment detects the corner of the display image area by adopting a corner detection method.
Specifically, the terminal device performs the same rectification processing for each target image. For each target image, firstly, four vertexes of a display image area in the target image are found, and all corner points of the target image are detected by adopting a corner point detection method, wherein the corner points refer to the inflection points of lines. And then finding out four corner points closest to the four sides of the display image area from all the corner points, wherein the four corner points are the four corner points of the display image area, and simultaneously acquiring the position information of the four corner points of the display image area. For example, referring to FIG. 2, four vertices A1, A2, A3 and A4 of the display image area A1A2A3A are to be found. All the corner points of the target image are detected by adopting a corner point detection method, four corner points A1, A2, A3 and A4 which are nearest to four sides (A1A2, A2A4, A3A4 and A1A3) of a display image area are found from all the corner points, the four corner points are four vertexes of the display image area, and coordinates of A1, A2, A3 and A4 are obtained simultaneously. The corner detection method may be Harris corner detection, sub-pixel level corner detection, or binary edge point search. Furthermore, as more than one target image is provided and the photographing position is fixed, the position of the display image area in the target image is fixed, the corner detection can be performed on only one target image to obtain four vertex coordinates of the display image area, the four vertex coordinates of the display image areas of other target images are the four vertex coordinates, the corner detection is not required to be performed on all the target images, the image processing time is reduced, and the time consumption problem is solved.
And S112, the terminal equipment corrects the display image area according to the coordinates of the corner points of the display image area and the preset corner point coordinates to obtain the corrected display image area.
Specifically, the preset corner coordinates are positions of four vertices of the corrected display image region, and the display image region is moved to the preset corner coordinates, and the tilt correction may be completed by using a tilt correction method such as geometric correction, perspective correction, or homography correction. And then carrying out barrel distortion correction on the display image area after the inclination correction, and eliminating the barrel distortion phenomenon of the display image area after the inclination correction to obtain the corrected display image area. For example, referring to fig. 2, four target vertices B1, B2, B3, and B4 corresponding to a1, a2, A3, and a4, respectively, are preset in the target image. The tilt correction is performed on the display image area based on the spatial relationship between a1, a2, A3, a4 and B1, B2, B3, B4, that is, the vertex a1 is corrected to B1, the vertex a2 is corrected to B2, the vertex A3 is corrected to B3, the vertex a4 is corrected to B4, and the tilt-corrected display image area B1B2B3B4 is subjected to barrel distortion correction on the tilt-corrected display image area B1B2B3B4, so that the corrected display image area C1C2C3C4 is obtained.
S12, the terminal device extracts the luminance data of the corrected display image area as the luminance data of the target image.
After obtaining the corrected display image area, luminance data of the display image area, that is, luminance data of the display image in the target image, is extracted, where the luminance data refers to luminance values of pixels of the display image, and for display images in different gray scales, luminance values of pixels in different gray scales are corresponding to each other.
In one implementation, before step S11, the method further includes: the terminal equipment adjusts the initial state of the display. To accurately adjust a display image, luminance data of the display image needs to be acquired in a better display state of a display, an initial state of the display image can be adjusted by adjusting parameters related to luminance and color, such as a Gamma value or white balance of the display image, and then the luminance data of the display image is obtained by photographing the display image.
And S2, the terminal equipment determines the gray scale compensation data corresponding to the display image according to the brightness data.
Specifically, the target image comprises three primary color images under at least one gray level, the brightness data of the target image refers to the brightness value of each pixel of a display image in the target image under each gray level, the gray level refers to the level of different brightness between the brightest level and the darkest level in the image, the gray level range in each image is 0-255, 256 gray levels are provided, and at least one gray level is selected from the 255 gray levels to obtain the brightness data. Since each pixel of the display is generally composed of three sub-pixels of RGB, the primary color in this embodiment refers to R, G, B, and the three primary color images are a primary color R image, a primary color G image, and a primary color B image, respectively, that is, each gray level includes a primary color R gray level, a primary color G gray level, and a primary color B gray level. As shown in fig. 3, fig. 3 is a schematic diagram of gray scale layers, in which three gray scale layers with different brightness are preset, the gray scale values of the gray scale layers from the dark color block to the light color block are respectively 30, 110, and 230, and each gray scale layer is divided into R, G, B gray scale layers of three primary colors. The display image can be photographed by the brightness data acquisition device, the target images of the three primary colors of the display image under different gray scales are respectively acquired, the brightness values of the three sub-pixels under different gray scales are obtained, the target images of the display image under different gray scales can be acquired by the brightness data acquisition device with the optical filter, and then the brightness values of the three sub-pixels of the target image under each gray scale under the gray scale are extracted through the white field. For example, referring to fig. 3, 30/110/230 gray levels are preset, and a Color Vision camera is used to photograph a display of a TCL _ R63 tv set, so as to obtain target images of the primary colors R, G, and B at 30 gray levels, 110 gray levels, and 230 gray levels, respectively, and obtain 9 target images in total, and then extract the luminance values of corresponding sub-pixels from the 9 target images, respectively. And determining gray scale compensation data corresponding to the display image according to the brightness values of the three sub-pixels under different gray scales of the display image in the target image.
Further, step S2 includes:
and S21, the terminal equipment determines a gamma curve corresponding to each pixel partition according to the brightness average value of each pixel partition of the target image under each gray scale.
Specifically, the pixel partition of the target image refers to a pixel partition of a display image in the target image, the pixel partition including at least one pixel. For target images of different primary colors at the same gray level, a pixel refers to a corresponding primary color sub-pixel. When the pixel partition comprises a pixel, the brightness average value of each pixel partition in the target image under each gray scale is the brightness value of the pixel under the gray scale; or, when the pixel partition includes at least two pixels, the average value of the brightness of each pixel partition in the target image at each gray level is the average value of the brightness values of all the pixels in the pixel partition at the gray level. Since the calculation amount and the calculation time of the display chip are increased by processing each pixel to obtain the gray-scale compensation data, and the data storage space of the display chip is limited, the number of pixels in each pixel region needs to be determined according to the data storage space and the data operation time of the display chip, and the pixel partition is divided, for example, the resolution of a television display is generally 3840 × 2160, which is equivalent to 3840 × 2160 pixel partitions in each gray scale, so that the calculation amount is large and the calculation time is consumed, and therefore, the pixel partition of each gray scale is reduced to 270 × 480, and the calculation time is reduced. And calculating the gamma value corresponding to each pixel partition according to the gray-scale value under each primary color, thereby obtaining the gamma curve corresponding to each pixel partition.
In one implementation, the gamma value of each pixel partition is calculated by the average brightness value and the gray level value of each gray level of the pixel partition, and the calculation method is as follows:
wherein N is the number of gray levels, LiIs niAverage value of luminance, L, of a certain pixel division of gray scalei-1Is ni-1Average value of brightness, n, of a certain pixel division of gray scaleiAnd ni-1Are gray scale values of two different gray scales, and ni>ni-1，LiAnd Li-1Are each niGray scale and ni-1The average value of the luminance of the gray scale. For example, taking the three gray levels of the target image as n 1-30, n 2-110, and n 3-230, respectively, under the primary color R, the luminance average values of the first pixel partition of the target image under the three gray levels are LR1, LR2, and LR3, respectively, and then the gamma values of the pixel partition under the primary color R are:
in another implementation manner, the gamma value of each pixel partition may be obtained by fitting the luminance average value and the gray value of each gray level of each pixel partition, that is, fitting the luminance average value of each gray level along with the change of the gray value to obtain a fitting curve, where the fitting curve is the gamma curve of the corresponding pixel partition, and the obtained curve fitting value is the gamma value.
S22, the terminal device determines the brightness threshold value of the target image under each gray scale.
Specifically, the brightness threshold of each primary color needs to be determined for the target image under each gray scale, a brightness value may be preset for each target image corresponding to each primary color under each gray scale as the brightness threshold, and the brightness thresholds of the target image under different gray scales may also be determined according to the brightness values of the pixels of the target image under different gray scales. The ratio of the luminance threshold values of the three primary colors under each gray scale is consistent, so that the white mixed by the three primary colors under each gray scale is consistent, that is, the white emitted by each pixel is consistent only if the ratio of the luminance of the three sub-pixels (the ratio of the luminance threshold values) of each pixel of the display is consistent, and the phenomenon of non-uniformity of the white emitted by the pixels is avoided. When the brightness threshold is a preset brightness value, the brightness value with the consistent brightness ratio of the three primary colors under each gray scale can be preset directly according to the preset brightness ratio; when the luminance threshold is a luminance threshold determined according to the luminance values of the pixels of the target image in each gray scale, and the actual calculated luminance average values of the three primary colors in each gray scale are different, the obtained luminance ratios of the three primary colors in each gray scale may be inconsistent, and the calculated luminance threshold may be adjusted to obtain an adjusted luminance threshold, specifically, step S22 includes:
s221, aiming at each gray scale, the terminal equipment calculates the average value of the brightness values of all pixels in the target image under the gray scale;
s222, the terminal equipment determines the brightness proportion of three primary colors of the target image;
and S223, the terminal device adjusts the average value of the brightness values under the gray scale according to the brightness proportion to obtain the adjusted brightness average value under the gray scale, wherein the adjusted brightness average value under the gray scale is the brightness threshold of the target image under the gray scale.
Specifically, the pixels include an R sub-pixel, a G sub-pixel, and a B sub-pixel, and for each gray scale, an average value of the luminance values of each sub-pixel is calculated, and the average value of the luminance of the R sub-pixel, the average value of the luminance of the G sub-pixel, and the average value of the luminance of the B sub-pixel at the gray scale are obtained. Since the ratios of the luminance average values of the three sub-pixels at each gray level calculated in step S221 may not be consistent, a luminance ratio needs to be determined, and the luminance ratio may be a preset luminance ratio or a luminance ratio of three primary colors of the target image at any gray level. And according to the determined brightness proportion, adjusting the proportion of the average value of the brightness values of the three sub-pixels under each gray scale to be the brightness proportion, and obtaining the adjusted brightness average value of the three primary colors under each gray scale. And determining the adjusted brightness average value of the three primary colors under each gray scale as the brightness threshold value of the target image under each gray scale.
And S23, the terminal equipment determines respective corresponding compensation values of the gray scales according to the brightness threshold and the gamma curve.
Specifically, each pixel partition under each primary color corresponds to a gamma curve, and the gamma curve is a change relationship curve between the luminance value and the gray scale of each pixel partition under each primary color. The brightness average values of different pixel partitions of the same primary color under the same gray scale may be different, and the brightness average values of all the pixel partitions of the same primary color under the gray scale need to be adjusted to be consistent, that is, the brightness average values of all the pixel partitions of the same primary color under the gray scale are adjusted to be the brightness threshold of the corresponding primary color under the gray scale, so that the brightness of the same primary color under the gray scale is consistent. For each gray scale, the gamma curve of each primary color of each pixel partition is used as the gray scale value of the primary color of the pixel partition, which is the gray scale compensation value of the primary color of the pixel partition, corresponding to the gray scale value of the brightness threshold of the primary color of the gray scale on the gamma curve, or the difference between the gray scale value and the gray scale value of the gray scale can be used as the gray scale compensation value of the primary color of the pixel partition. Under the gray scale, the gray scale compensation values under all the primary colors of all the pixel partitions are the compensation values corresponding to the gray scale. For example, at the gray level of 30, the luminance threshold of the corresponding primary color R is 100, the luminance of the pixel partition 1 is 95, the luminance of the pixel partition 2 is 105, the luminance of the two pixel partitions at 30 gray levels needs to be calibrated to be consistent (calibrated to be the luminance threshold 100), the gamma1 curve and the gamma1 curve of the two partitions are calculated, and the gray level value of the pixel partition 1 corresponding to the luminance of 100 is obtained according to the gamma1 curve; and obtaining the gray-scale value of the pixel partition 2 corresponding to the brightness of 100 according to the gamma2 curve, wherein the gray-scale value of the pixel partition 1 and the gray-scale value of the pixel partition 2 are the gray-scale compensation values of the pixel partition 1 and the pixel partition 2 respectively. And according to the mode, carrying out the same processing on each gray scale to obtain the compensation value respectively corresponding to each gray scale.
And S24, the terminal equipment determines the gray scale compensation data corresponding to the display image according to the compensation values respectively corresponding to all the gray scales.
And combining the compensation values respectively corresponding to all the gray scales to generate a compensation file, wherein the compensation file is gray scale compensation data corresponding to the display image in the target image. The gray scale compensation data reflects the brightness deviation of each pixel area of each sub-pixel under each gray scale of the display image, and the brightness of the display image under the corresponding gray scale is compensated in a gray scale compensation mode, so that the brightness of each display area under the same gray scale is consistent.
And S3, the terminal equipment adjusts the display image according to the gray-scale compensation data to obtain the adjusted display image.
Specifically, the gray scale compensation data is written into the display, and the brightness compensation is carried out on the display image. And compensating the color cast region and the brightness region of the display in a brightness compensation mode, and adjusting the display image to obtain the adjusted display image. The writing mode of the gray-scale compensation data can write the gray-scale compensation data into the display through a serial port, a network port, a local area network or an HDMI, and can also directly write the order compensation data into a chip of the display.
In one implementation, after the gray scale compensation data is written into the display, the situation that the compensation is not effective or the display is abnormal may occur, and the adjusted display image needs to be checked to determine whether the gray scale compensation data is effective for the display, so that the requirement of automatic production of a display production line can be met. Specifically, a uniformity value of a display image is preset, a target image after adjustment at a certain gray scale is obtained, the uniformity value of the display image corresponding to the target image after adjustment at the gray scale is calculated, and meanwhile, the target image before adjustment at the gray scale is obtained and the uniformity value of the display image corresponding to the target image before adjustment is calculated. And taking the preset uniformity value as a standard value, and judging the display effect of the display image with adjusted Europe according to the uniformity value of the display image before adjustment.
In one embodiment, the present invention provides a terminal device, the internal structure principle of which is shown in fig. 4. The terminal equipment comprises a processor, a memory, a network interface, a display screen and an input device which are connected through a system bus. Wherein the processor of the terminal device is configured to provide computing and control capabilities. The memory of the terminal equipment comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the terminal device is used for connecting and communicating with an external terminal through a network. The computer program is executed by a processor to implement the display image adjusting method as described above. The display screen of the terminal equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the terminal equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the terminal equipment, an external keyboard, a touch pad or a mouse and the like.
It will be understood by those skilled in the art that fig. 4 is a block diagram of only a portion of the structure associated with the inventive arrangements, and does not constitute a limitation on the terminal device to which the inventive arrangements are applied, and that a particular terminal device may include more or less components than those shown, or may combine certain components, or have a different arrangement of components. In one embodiment, the present invention provides a terminal device, which includes a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the display image adjusting method as described above.
In one embodiment, the invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the display image adjustment method as described above.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (12)
1. A method for adjusting a display image, comprising:
acquiring brightness data of a target image, wherein the target image is a brightness image obtained by shooting a display image on a display;
determining gray scale compensation data corresponding to the display image according to the brightness data;
and adjusting the display image according to the gray scale compensation data to obtain an adjusted display image.
2. The method of claim 1, wherein the target image comprises three primary color images at least one gray level, and wherein determining gray level compensation data corresponding to the display image from the luminance data comprises:
determining a gamma curve corresponding to each pixel partition according to the brightness average value of each pixel partition of the target image under each gray scale;
determining the brightness threshold value of the target image under each gray scale;
determining compensation values respectively corresponding to the gray scales according to the brightness threshold and the gamma curve;
and determining gray scale compensation data corresponding to the display image according to the compensation values respectively corresponding to all gray scales.
3. The method of claim 2, wherein the pixel region comprises a pixel, and the average value of the luminance of each pixel region in the target image at each gray level is the luminance value of the pixel at the gray level; alternatively, the first and second electrodes may be,
the pixel partition comprises at least two pixels, and the average value of the brightness of each pixel partition in the target image under each gray scale is the average value of the brightness of all the pixels in the pixel partition under the gray scale.
4. The method according to claim 2, wherein the brightness threshold of the target image at each gray level is a preset brightness value; alternatively, the first and second liquid crystal display panels may be,
the determining the brightness threshold of the target image under each gray scale comprises:
calculating the average value of the brightness values of all pixels in the target image under each gray scale;
determining the brightness proportion of three primary colors of the target image;
and adjusting the average value of the brightness values under the gray scale according to the brightness proportion to obtain the brightness average value after the gray scale is adjusted, wherein the brightness average value after the gray scale is the brightness threshold value of the target image under the gray scale.
5. The method according to claim 4, wherein the brightness ratio of the three primary colors of the target image is a preset brightness ratio, or the brightness ratio of the three primary colors of the target image is the brightness ratio of the three primary colors of the target image at any gray scale.
6. The method of claim 1, wherein the obtaining luminance data for the target image comprises:
acquiring target images, and performing image correction processing on a display image area of each target image to obtain a corrected display image area;
and extracting the brightness data of the corrected display image area as the brightness data of the target image.
7. The method according to claim 6, wherein the performing image rectification processing on the display image area of each target image to obtain a rectified display image area comprises:
detecting the corner of a display image area by adopting a corner detection method aiming at each target image;
and correcting the display image area according to the coordinates of the corner points of the display image area and preset corner point coordinates to obtain the corrected display image area.
8. The method of claim 7, wherein rectifying the display image area to obtain a rectified display image area comprises:
performing tilt correction on the display image area to obtain a display image area after the tilt correction;
and carrying out barrel distortion correction on the display image area after the inclination correction to obtain the corrected display image area.
9. The method according to claim 6, wherein before the target images are acquired and the display image area of each target image is subjected to image rectification processing to obtain the rectified display image area, the method further comprises:
adjusting an initial state of the display.
10. The method of claim 1, wherein adjusting the display image according to the gray scale compensation data to obtain an adjusted display image comprises:
and writing the gray scale compensation data into the display, and adjusting the display image of the display to obtain an adjusted display image.
11. A terminal device, characterized in that the terminal device comprises a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the display image adjusting method according to any one of claims 1-10 when executing the computer program.
12. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the display image adjustment method according to any one of claims 1 to 10.
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| CN202011155681.0A CN114495816B (en) | 2020-10-26 | 2020-10-26 | Display image adjustment method, terminal device and computer readable storage medium |
| PCT/CN2021/118775 WO2022089082A1 (en) | 2020-10-26 | 2021-09-16 | Method for adjusting display image, terminal device, and computer readable storage medium |
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| CN116381983A (en) * | 2022-12-29 | 2023-07-04 | Tcl华星光电技术有限公司 | Luminance compensation method and device for display panel and display panel |
| CN116823675B (en) * | 2023-08-28 | 2023-12-08 | 禹创半导体(深圳)有限公司 | OLED panel global voltage drop compensation method, device, equipment and storage medium |
| CN117392937B (en) * | 2023-12-13 | 2024-03-19 | 武汉精测电子集团股份有限公司 | Color point separation and demura method, device and system for white picture of display panel |
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| WO2022089082A1 (en) | 2022-05-05 |
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