Processing method, device and display panel

Abstract

The application provides a processing method, device and display panel. The method comprises: obtaining a first pixel light quantity and a first gray scale value of a first image; determining a first dithering map according to the first pixel light quantity, the first gray scale value and a first corresponding relationship, the first dithering map comprising a plurality of periodically arranged second dithering maps, and the first corresponding relationship being a corresponding relationship among a pixel light quantity, a gray scale value and a dithering map; and adjusting a gray scale value of at least part of pixels in the first image according to the first dithering map to obtain a second image. Through the above method, horizontal or vertical stripes during display of the display panel can be eliminated when the display panel is in a low gray scale state, and the grainy feeling of the display is reduced, thereby improving the visual experience of the user.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, and more particularly, to a processing method, device and display panel. BACKGROUND

[0002] With the continuous development of display technology, users' requirements for display panel products are also increasing; users' expectations for display panel products are not only limited to the expansion of screen size, but also include the improvement of image display quality. In this context, whether to have a picture quality enhancement function has become one of the important indicators for measuring the pros and cons of display panel products.

[0003] However, when the display panel is in a low gray scale state, applying the picture quality enhancement function may cause display abnormalities; this is because the low gray scale state means that the number of pixel points is significantly reduced, which may cause the image on the display panel to be unevenly distributed, in which case, applying the picture quality enhancement function may cause the display panel to easily produce vertical or horizontal stripes, thereby seriously affecting the user's visual experience. SUMMARY

[0004] The present application provides a processing method, device and display panel, which can eliminate horizontal or vertical stripes when the display panel is in a low gray scale state, while reducing the graininess of the display, thereby improving the user's visual experience.

[0005] In a first aspect, a processing method is provided, which is applied in a driving chip, and the method comprises: obtaining a first pixel point light quantity and a first gray scale value of a first image; determining a first dithering map according to the first pixel point light quantity, the first gray scale value and a first correspondence relationship, the first dithering map comprising a plurality of periodically arranged second dithering maps, and the first correspondence relationship being a correspondence relationship among pixel point light quantity, gray scale value and dithering map; and adjusting a gray scale value of at least part of pixels in the first image according to the first dithering map to obtain a second image.

[0006] In the embodiments of the present application, the driving chip can select a regularly arranged first dithering map to perform dithering processing on the first image based on the first pixel point light quantity, the first gray scale value and the first correspondence relationship. In this way, the display panel can eliminate horizontal or vertical stripes when displaying the second image subjected to dithering processing, while reducing the graininess of the display, thereby improving the user's visual experience.

[0007] In combination with the first aspect, in some implementation manners of the first aspect, the first dithering map comprises a plurality of pixels distributed in M rows and N columns, the plurality of pixels comprising a first pixel, the first pixel comprising a sub-pixel with a gray scale value of 0, and M and N are positive integers.

[0008] In a possible implementation, the plurality of pixels can further include a second pixel, and a gray scale value of each of the sub-pixels of the second pixel is 0.

[0009] In the embodiments of the present application, the first dithering map includes the first pixel, and the first pixel includes the sub-pixel with the gray scale value other than 0. In this way, the first dithering map can exhibit a visual effect close to continuous gray scale through reasonable distribution of the first pixel, thereby exhibiting a high-quality image effect in the case of limited gray scale values.

[0010] In combination with the first aspect, in some implementations of the first aspect, M=4, N=8, the second dithering map includes P pixels distributed in 4 rows and 4 columns, each pixel including: a first sub-pixel, a second sub-pixel, and a third sub-pixel; a gray scale value of the first sub-pixel in the first row and the third column, the third sub-pixel in the third row and the fourth column, and the second sub-pixel in the fourth row and the second column in the P pixels is a first value, the first value being greater than 0, and a gray scale value of the remaining sub-pixels is 0.

[0011] In a possible implementation, the first gray scale value is greater than 0 and less than or equal to 5, and the first pixel has a pixel number less than or equal to 3, the first dithering map can include the plurality of periodically arranged second dithering maps.

[0012] In a possible implementation, the first sub-pixel can be a red sub-pixel, the second sub-pixel can be a blue sub-pixel, and the third sub-pixel can be a green sub-pixel.

[0013] Currently, when the driving chip performs dithering processing on the first image, an irregularly arranged dithering map needs to be used, which exacerbates the generation of horizontal and vertical stripes in the display panel and causes the display image to exhibit a heavy grainy feeling. In the embodiments of the present application, the first dithering map includes a plurality of regularly arranged second dithering maps, and the gray scale values of the sub-pixels of the corresponding first pixels in the plurality of second dithering maps are the same. In this way, the display panel can eliminate horizontal or vertical stripes when displaying the second image after dithering processing, and at the same time, the grainy feeling of the display can be reduced, thereby improving the visual experience of the user. In addition, this first dithering map is particularly suitable for processing the first image with a small number of pixel lightings and extremely low gray scale values.

[0014] In some implementations of the first aspect, M is 4, N is 8, the second dithering pattern includes P pixels distributed in 4 rows and 4 columns, each pixel includes a first sub-pixel, a second sub-pixel and a third sub-pixel, and the gray scale values of the third sub-pixel in the first row and the first column, the first sub-pixel in the first row and the third column, the second sub-pixel in the first row and the fourth column, the second sub-pixel in the second row and the third column, the third sub-pixel in the second row and the fourth column, the first sub-pixel in the third row and the first column, the second sub-pixel in the third row and the second column, the third sub-pixel in the third row and the third column, the second sub-pixel in the fourth row and the first column, the first sub-pixel in the fourth row and the second column, and the third sub-pixel in the fourth row and the fourth column of the P pixels are a first value, the first value is greater than 0, and the gray scale values of the remaining sub-pixels are 0.

[0015] In a possible implementation, when the first gray scale value is greater than 5 and less than or equal to 8, and the first pixel point light quantity is greater than 3 and less than or equal to 12, the first dithering pattern can include the plurality of periodically arranged second dithering patterns.

[0016] In the embodiments of the present application, the first dithering pattern includes a plurality of regularly arranged second dithering patterns, and the gray scale values of the sub-pixels of the corresponding first pixels in the plurality of second dithering patterns are the same. In this way, when the display panel displays the second image subjected to the dithering processing, the horizontal or vertical stripes can be eliminated, and the grainy feeling of the display can be reduced, thereby improving the visual experience of the user. In addition, this first dithering pattern is particularly suitable for processing the first image with a large number of pixel light quantities and moderate gray scale values.

[0017] In some implementations of the first aspect, M is 4, N is 8, the second dithering pattern includes P pixels distributed in 4 rows and 4 columns, each pixel includes a first sub-pixel, a second sub-pixel and a third sub-pixel, and the gray scale values of the second sub-pixel in the first row and the first column, the first row and the third column, the second row and the second column, the second row and the fourth column, the third row and the first column, the third row and the third column, the fourth row and the second column, and the fourth row and the fourth column of the P pixels are a first value, the first value is greater than 0, and the gray scale values of the remaining sub-pixels are 0; the gray scale values of the first sub-pixel and the third sub-pixel in the first row and the second column, the first row and the fourth column, the second row and the first column, the second row and the third column, the third row and the second column, the third row and the fourth column, the fourth row and the first column, and the fourth row and the third column of the P pixels are the first value, and the gray scale values of the remaining sub-pixels are 0.

[0018] In a possible implementation, when the first gray scale value is greater than 9 and less than or equal to 12, and the first pixel point light quantity is greater than 13 and less than or equal to 32, the first dithering pattern can include the plurality of periodically arranged second dithering patterns.

[0019] In the embodiments of the present application, the first dithering pattern includes a plurality of regularly arranged second dithering patterns, and the gray scale values of the sub-pixels of the corresponding first pixels in the plurality of second dithering patterns are the same. In this way, the second image obtained by processing the first image through the first dithering pattern can eliminate the horizontal or vertical stripes in the display panel, and at the same time, reduce the graininess of the display, thereby improving the visual experience of the user. In addition, this first dithering pattern is particularly suitable for processing a first image with a large number of pixel points and high gray scale values.

[0020] In combination with the first aspect, in some implementations of the first aspect, M = 4, N = 8, the second dithering pattern includes P pixels distributed in 4 rows and 4 columns, each pixel includes a first sub-pixel, a second sub-pixel and a third sub-pixel, the gray scale values of the first sub-pixel in the first row and the third column, the second sub-pixel in the first row and the fourth column, the second sub-pixel in the second row and the third column, the third sub-pixel in the second row and the fourth column, the first sub-pixel in the third row and the first column, the third sub-pixel in the third row and the third column, the second sub-pixel in the fourth row and the first column, the first sub-pixel in the fourth row and the second column, and the first sub-pixel in the fourth row and the fourth column in the P pixels are a first value, the first value is greater than 0, the gray scale values of the third sub-pixel in the first row and the first column, the second sub-pixel in the third row and the second column, and the third sub-pixel in the fourth row and the second column in the P pixels are a second value, the second value is greater than the first value, and the gray scale values of the remaining sub-pixels are 0.

[0021] In the embodiments of the present application, the sub-pixels of the first pixels in the first dithering pattern are represented using three different gray scale values (for example, 0, a first value and a second value), which effectively improves the brightness performance of the image. This design can ensure that the overall brightness difference between the first image and the second image before and after dithering processing remains at a low level, which helps the image to achieve a smoother gray scale transition.

[0022] In a second aspect, a processing apparatus is provided, including an acquisition unit and a processing unit, the acquisition unit is configured to acquire a first pixel point number and a first gray scale value of a first image; the processing unit is configured to: determine a first dithering pattern according to the first pixel point number, the first gray scale value and a first correspondence relationship, the first dithering pattern includes a plurality of periodically arranged second dithering patterns, and the first correspondence relationship is a correspondence relationship among pixel point number, gray scale value and dithering pattern; and adjust the gray scale value of at least part of the pixels in the first image according to the first dithering pattern to obtain a second image.

[0023] In combination with the second aspect, in some implementations of the second aspect, the first dithering pattern includes a plurality of pixels distributed in M rows and N columns, the plurality of pixels includes a first pixel, the first pixel includes a sub-pixel with a gray scale value other than 0, and M and N are positive integers.

[0024] With reference to the second aspect, in some implementations of the second aspect, M=4, N=8, the second dithering pattern includes P pixels distributed in 4 rows and 4 columns, each pixel including: a first sub-pixel, a second sub-pixel and a third sub-pixel; a gray scale value of the first sub-pixel in the first row and the third column, the third sub-pixel in the third row and the fourth column, and the second sub-pixel in the fourth row and the second column in the P pixels is a first value, the first value being greater than 0, and a gray scale value of the remaining sub-pixels is 0.

[0025] With reference to the second aspect, in some implementations of the second aspect, M=4, N=8, the second dithering pattern includes P pixels distributed in 4 rows and 4 columns, each pixel including: a first sub-pixel, a second sub-pixel and a third sub-pixel; a gray scale value of the third sub-pixel in the first row and the first column, the first sub-pixel in the first row and the third column, the second sub-pixel in the first row and the fourth column, the second sub-pixel in the second row and the third column, the third sub-pixel in the second row and the fourth column, the first sub-pixel in the third row and the first column, the second sub-pixel in the third row and the second column, the third sub-pixel in the third row and the third column, the second sub-pixel in the fourth row and the first column, the first sub-pixel and the third sub-pixel in the fourth row and the second column, and the first sub-pixel in the fourth row and the fourth column in the P pixels is a first value, the first value being greater than 0, and a gray scale value of the remaining sub-pixels is 0.

[0026] With reference to the second aspect, in some implementations of the second aspect, M=4, N=8, the second dithering pattern includes P pixels distributed in 4 rows and 4 columns, each pixel including: a first sub-pixel, a second sub-pixel and a third sub-pixel; a gray scale value of the second sub-pixel in the first row and the first column, the first row and the third column, the second row and the second column, the second row and the fourth column, the third row and the first column, the third row and the third column, the fourth row and the second column, and the fourth row and the fourth column in the P pixels is a first value, the first value being greater than 0, and a gray scale value of the remaining sub-pixels is 0; a gray scale value of the first sub-pixel and the third sub-pixel in the first row and the second column, the first row and the fourth column, the second row and the first column, the second row and the third column, the third row and the second column, the third row and the fourth column, the fourth row and the first column, and the fourth row and the third column in the P pixels is the first value, and a gray scale value of the remaining sub-pixels is 0.

[0027] In some implementations of the second aspect, in conjunction with the second aspect, M=4, N=8, the second dithering pattern includes P pixels distributed in 4 rows and 4 columns, each pixel including: a first sub-pixel, a second sub-pixel, and a third sub-pixel; a gray scale value of the first sub-pixel in the first row and the third column, the second sub-pixel in the first row and the fourth column, the second sub-pixel in the second row and the third column, the third sub-pixel in the second row and the fourth column, the first sub-pixel in the third row and the first column, the third sub-pixel in the third row and the third column, the second sub-pixel in the fourth row and the first column, the first sub-pixel in the fourth row and the second column, and the first sub-pixel in the fourth row and the fourth column of the P pixels is a first value, the first value being greater than 0; a gray scale value of the third sub-pixel in the first row and the first column, the second sub-pixel in the third row and the second column, and the third sub-pixel in the fourth row and the second column of the P pixels is a second value, the second value being greater than the first value; and a gray scale value of the remaining sub-pixels is 0.

[0028] In a third aspect, a processing apparatus is provided, including: at least one processor and a memory, the at least one processor being coupled with the memory and configured to read and execute instructions in the memory, so that the apparatus implements the method in any implementation manner of the first aspect.

[0029] In a fourth aspect, a computer readable storage medium is provided, the computer readable storage medium storing a program code, when the computer program code is run on a computer, causing the computer to execute the method in any implementation manner of the first aspect.

[0030] In a fifth aspect, a chip is provided, the chip including a circuit configured to execute the method in any implementation manner of the first aspect.

[0031] In a sixth aspect, a computer program product is provided, the computer program product including a computer program, when the computer program is run by a processor, causing the method in any implementation manner of the first aspect to be executed.

[0032] In a seventh aspect, a display panel is provided, including: the processing apparatus in any implementation manner of the second aspect or the third aspect. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a schematic diagram of a pixel block provided by an embodiment of the present application;

[0034] Figure 2 is a schematic diagram of a dithering pattern provided by an embodiment of the present application;

[0035] Figure 3 is a schematic flowchart of a processing method provided by an embodiment of the present application;

[0036] Figure 4 is a schematic diagram of a first dithering diagram provided by an embodiment of the present application;

[0037] Figure 5 is a schematic diagram of another first dithering diagram provided by an embodiment of the present application;

[0038] Figure 6 is a schematic diagram of another first dithering diagram provided by an embodiment of the present application;

[0039] Figure 7 is a schematic diagram of another first dithering diagram provided by an embodiment of the present application;

[0040] Figure 8 is a display effect comparison diagram of an existing scheme and an optimized scheme when a gray scale value is 3, provided by an embodiment of the present application;

[0041] Figure 9 is a display effect comparison diagram of an existing scheme and an optimized scheme when a gray scale value is 5, provided by an embodiment of the present application;

[0042] Figure 10 is a display effect comparison diagram of an existing scheme and an optimized scheme when a gray scale value is 8, provided by an embodiment of the present application;

[0043] Figure 11 is a schematic diagram of a luminance curve of an existing scheme and an optimized scheme varying with a gray scale value, provided by an embodiment of the present application;

[0044] Figure 12 is a schematic diagram of a processing device, provided by an embodiment of the present application;

[0045] Figure 13 is a schematic diagram of another processing device, provided by an embodiment of the present application. DETAILED DESCRIPTION

[0046] In the description of the embodiments of the present application, unless otherwise specified, " / " represents the meaning of or, for example, A / B can represent A or B; "and / or" in this document only represents a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In this application, "at least one" means one or more, and "multiple" means two or more. "At least one of the following" or the like means any combination of these items, including any combination of single item or multiple items. For example, at least one of a, b, or c can represent a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, and c can be single or multiple.

[0047] In the embodiments of this application, prefixes such as "first" and "second" are used only to distinguish different description objects and have no limiting effect on the position, order, priority, quantity, or content of the described objects. The use of prefixes such as ordinal numbers in the embodiments of this application to distinguish description objects does not constitute a limitation on the described objects. For a statement of the described objects, please refer to the description in the context of the claims or embodiments, and the use of such prefixes should not constitute an unnecessary limitation.

[0048] In order to better understand this application, the terms involved in this application are first explained and illustrated.

[0049] (1) Dithering technology: In digital image processing, dithering technology is used to solve the problem of displaying low-bit-depth images on high-bit-depth devices. By applying spatial dithering in pixel blocks, the missing pixel values ​​can be displayed. For example, assuming that the brightness of each pixel in a 2×2 pixel block is 1 nit, it can be expressed as Figure 1 The pixel block shown has an average brightness of 4 nits. Figure 2 Adjust in any of the ways shown Figure 1 For example, Figure 1 The pixel block is adjusted to Figure 2 The brightness pattern of the pixel block shown in the first row and first column of .

[0050] (2) LQE: Due to the difficulty in controlling low-brightness grayscale voltage and the influence of factors such as light-emitting device efficiency, the brightness and color uniformity of low-grayscale images are poor. The LQE algorithm uses high-grayscale voltage for spatial dithering to represent the low-grayscale display effect, thereby improving low-grayscale color shift and stripe mura. Currently, the dither pixel block size used by the LQE algorithm is 8×4, and the dither pattern can be arranged in any way.

[0051] The technical solution in this application will be described below with reference to the accompanying drawings.

[0052] As described in the background technology, when the display panel is in a low grayscale state, applying the image quality enhancement function may cause display abnormalities; this is because the low grayscale state means that the number of illuminated pixels is significantly reduced, and this reduction may cause uneven image distribution on the display panel. In this case, applying the image quality enhancement function may make the display panel prone to vertical or horizontal fine lines, thereby seriously affecting the user's visual experience.

[0053] The embodiment of the present application provides a processing method, device and display panel, which can eliminate horizontal or vertical stripes in the display panel in the low gray scale state, reduce the grainy feeling of display, and improve the visual experience of users.

[0054] Figure 3 The embodiment of the present application provides a processing method, device and display panel, which can eliminate horizontal or vertical stripes in the display panel in the low gray scale state, reduce the grainy feeling of display, and improve the visual experience of users.

[0055] S301, acquiring a first pixel light quantity and a first gray scale value of a first image.

[0056] Optionally, the first image can come from an external device (for example, a camera, a computer or a media player), and the first image can be transmitted to the driving chip in the form of a digital signal through an interface.

[0057] Optionally, the driving chip can scan the pixels of the first image one by one, so as to acquire the first pixel light quantity and the first gray scale value of the first image.

[0058] S302, determining a first dithering map according to the first pixel light quantity, the first gray scale value and a first corresponding relationship.

[0059] The first dithering map includes a plurality of periodically arranged second dithering maps, and the first corresponding relationship is a corresponding relationship among the pixel light quantity, the gray scale value and the dithering map.

[0060] S303, adjusting the gray scale value of at least part of the pixels in the first image according to the first dithering map to obtain a second image.

[0061] The second image can be understood as a dithering processed image.

[0062] Optionally, the driving chip can control the display panel to display the second image after obtaining the second image.

[0063] In the embodiment of the present application, the driving chip can select the first dithering map arranged in a rule to perform dithering processing on the first image based on the first pixel light quantity, the first gray scale value and the first corresponding relationship. In this way, the display panel can eliminate horizontal or vertical stripes when displaying the second image processed by dithering, reduce the grainy feeling of display, and improve the visual experience of users.

[0064] According to some embodiments, the first dithering pattern comprises a plurality of pixels distributed in M rows and N columns, the plurality of pixels comprises a first pixel, the first pixel comprises a sub-pixel with a gray scale value other than 0, and M and N are positive integers. In this way, by reasonable distribution of the first pixel, the first dithering pattern can exhibit a visual effect close to continuous gray scale, thereby exhibiting a high-quality image effect in the case of limited gray scale values.

[0065] Optionally, the plurality of pixels further comprises a second pixel, and the gray scale values of the sub-pixels of the second pixel are all 0.

[0066] In a possible implementation, M=4, N=8, the second dithering pattern comprises P pixels distributed in 4 rows and 4 columns, each pixel comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, the gray scale values of the first sub-pixel in the first row and the third column, the third sub-pixel in the third row and the fourth column, and the second sub-pixel in the fourth row and the second column are the first value, the first value is greater than 0, and the gray scale values of the remaining sub-pixels are 0.

[0067] At present, when the driving chip performs dithering processing on the first image, an irregularly arranged dithering pattern needs to be used, which exacerbates the generation of horizontal and vertical stripes in the display panel and causes the display image to exhibit a heavy grainy feeling. Based on the above processing method, the first dithering pattern comprises a plurality of regularly arranged second dithering patterns, and the gray scale values of the sub-pixels of the corresponding first pixels in the plurality of second dithering patterns are the same. In this way, the display panel can eliminate horizontal or vertical stripes when displaying the second image after dithering processing, and at the same time, the grainy feeling of the display can be reduced, thereby improving the visual experience of the user. In addition, this first dithering pattern is particularly suitable for processing a first image with a small number of pixel points and a very low gray scale value.

[0068] Optionally, in the present application, the first sub-pixel can be a red sub-pixel, the second sub-pixel can be a blue sub-pixel, and the third sub-pixel can be a green sub-pixel.

[0069] It should be noted that the above remaining sub-pixels can refer to the sub-pixels other than the first sub-pixel in the first row and the third column, the sub-pixels other than the third sub-pixel in the third row and the fourth column, and the remaining sub-pixels other than the second sub-pixel in the fourth row and the second column. The remaining sub-pixels described below can also be interpreted in this way.

[0070] Optionally, in this implementation, the first value can be greater than or equal to 1 and less than or equal to 5.

[0071] Exemplarily, as Figure 4As shown, the first dither pattern includes two periodically arranged second dither patterns (with four columns as one period). Each second dither pattern includes 16 pixels, and each pixel includes a red sub-pixel, a blue sub-pixel, and a green sub-pixel. In each second dither pattern, the pixels in the third column of the first row, the fourth column of the third row, and the second column of the fourth row are first pixels, and the remaining pixels are second pixels.

[0072] Among them, the grayscale values ​​of the red sub-pixel in the first row and third column, the blue sub-pixel in the third row and fourth column, and the green sub-pixel in the fourth row and second column are represented by 1 (for example, 1 represents a grayscale value of 1 to 5), and the grayscale values ​​of the remaining sub-pixels are represented by 0 (for example, 0 represents a grayscale value of 0).

[0073] In one possible implementation, M=4, N=8, and the second jitter pattern includes P pixels distributed in 4 rows and 4 columns, each pixel including: a first sub-pixel, a second sub-pixel, and a third sub-pixel; among the P pixels, the grayscale value of the third sub-pixel in the first row and first column, the first sub-pixel in the first row and third column, the second sub-pixel in the first row and fourth column, the second sub-pixel in the second row and third column, the third sub-pixel in the second row and fourth column, the first sub-pixel in the third row and first column, the second sub-pixel in the third row and second column, the third sub-pixel in the third row and third column, the second sub-pixel in the fourth row and first column, the first and third sub-pixels in the fourth row and second column, and the first sub-pixel in the fourth row and fourth column is the first value, the first value is greater than 0, and the grayscale values ​​of the remaining sub-pixels are 0.

[0074] Based on the above processing method, the first dither pattern includes multiple regularly arranged second dither patterns, and the grayscale values ​​of the sub-pixels of the corresponding first pixels in the multiple second dither patterns are the same. In this way, when the display panel displays the dithered second image, it can eliminate horizontal or vertical stripes and reduce the graininess of the display, thereby improving the user's visual experience. In addition, this first dither pattern is particularly suitable for processing first images with a large number of illuminated pixels and moderate grayscale values.

[0075] Optionally, in this implementation, the first value may be greater than or equal to 6 and less than or equal to 8.

[0076] For example, Figure 5 As shown, the first dither pattern includes two periodically arranged second dither patterns (with four columns as one period), each second dither pattern includes 16 pixels, and each pixel includes a red sub-pixel, a blue sub-pixel, and a green sub-pixel. In each second dither pattern, the pixels in the first row, first column, the first row, third column, the first row, fourth column, the second row, third column, the second row, fourth column, the third row, first column, the third row, second column, the third row, third column, the fourth row, first column, the fourth row, second column, and the fourth row, fourth column are first pixels, and the remaining pixels are second pixels.

[0077] Among them, the grayscale values ​​of the blue sub-pixel in the first row and first column, the red sub-pixel in the first row and third column, the green sub-pixel in the first row and fourth column, the green sub-pixel in the second row and third column, the blue sub-pixel in the second row and fourth column, the red sub-pixel in the third row and first column, the green sub-pixel in the third row and second column, the blue sub-pixel in the third row and third column, the green sub-pixel in the fourth row and first column, the red sub-pixel and blue sub-pixel in the fourth row and second column, and the red sub-pixel in the fourth row and fourth column are represented by 1 (for example, 1 represents a grayscale value of 6 to 8), and the grayscale values ​​of the remaining sub-pixels are represented by 0 (for example, 0 represents a grayscale value of 0).

[0078] In one possible implementation, M=4, N=8, and the second jitter diagram includes P pixels distributed in 4 rows and 4 columns, and each pixel includes: a first sub-pixel, a second sub-pixel, and a third sub-pixel; the grayscale values ​​of the second sub-pixels in the first row and first column, the first row and third column, the second row and second column, the second row and fourth column, the third row and first column, the third row and third column, the fourth row and second column, and the fourth row and fourth column of the P pixels are the first value, and the first value is greater than 0, and the grayscale values ​​of the remaining sub-pixels are 0; the first sub-pixels and the third sub-pixels in the first row and second column, the first row and fourth column, the second row and third column, the third row and second column, the third row and fourth column, the fourth row and first column, and the fourth row and third column of the P pixels are the first value, and the grayscale values ​​of the remaining sub-pixels are 0.

[0079] Based on the above processing method, the first dither pattern includes multiple regularly arranged second dither patterns, and the grayscale values ​​of the sub-pixels of the corresponding first pixels in the multiple second dither patterns are the same. In this way, the second image obtained by processing the first dither pattern can eliminate horizontal or vertical stripes in the display panel and reduce the graininess of the display, thereby improving the user's visual experience. In addition, this first dither pattern is particularly suitable for processing first images with a large number of illuminated pixels and high grayscale values.

[0080] Optionally, in this implementation, the first value may be greater than or equal to 9 and less than or equal to 12.

[0081] For example, Figure 6 As shown, the first dither pattern includes two periodically arranged second dither patterns (with four columns as one period), each second dither pattern includes 16 pixels, and each pixel includes a red sub-pixel, a blue sub-pixel, and a green sub-pixel. In each second dither pattern, all pixels are first pixels.

[0082] Among them, the grayscale values ​​of the green sub-pixels in the first row and first column, the first row and third column, the second row and second column, the second row and fourth column, the third row and first column, the third row and third column, the fourth row and second column, and the fourth row and fourth column are represented by 1 (for example, 1 represents a grayscale value of 9 to 12); the grayscale values ​​of the red sub-pixels and blue sub-pixels in the first row and second column, the first row and fourth column, the second row and first column, the second row and third column, the third row and second column, the third row and fourth column, the fourth row and first column, and the fourth row and third column are represented by 1 (for example, 1 represents a grayscale value of 9 to 12), and the grayscale values ​​of the remaining sub-pixels are represented by 0 (for example, 0 represents a grayscale value of 0).

[0083] In one possible implementation, M=4, N=8, and the second jitter diagram includes P pixels distributed in 4 rows and 4 columns, and each pixel includes: a first sub-pixel, a second sub-pixel, and a third sub-pixel; the grayscale value of the first sub-pixel in the first row and third column, the second sub-pixel in the first row and fourth column, the second sub-pixel in the second row and third column, the third sub-pixel in the second row and fourth column, the first sub-pixel in the third row and first column, the third sub-pixel in the third row and third column, the second sub-pixel in the fourth row and first column, and the first sub-pixel in the fourth row and fourth column among the P pixels is a first value, and the first value is greater than 0; the grayscale value of the third sub-pixel in the first row and first column, the second sub-pixel in the third row and second column, and the third sub-pixel in the fourth row and second column among the P pixels is a second value, and the second value is greater than the first value; the grayscale value of the remaining sub-pixels is 0.

[0084] Based on this processing method, the sub-pixels of the first pixel in the first dither image are represented using three different grayscale values ​​(for example, 0, the first value, and the second value), effectively improving the image's brightness. This design ensures that the overall brightness difference between the first and second images before and after dithering remains low, helping to achieve smoother grayscale transitions.

[0085] For example, Figure 7 As shown, the first dither pattern includes two periodically arranged second dither patterns (with four columns as one period). Each second dither pattern includes 16 pixels, and each pixel includes a red sub-pixel, a blue sub-pixel, and a green sub-pixel. In each second dither pattern, the pixels in the first row, second column, second row, first column, second row, second column, third row, fourth column, and fourth row, third column are second pixels, and the remaining pixels are first pixels.

[0086] Among them, the grayscale values ​​of the red sub-pixel in the first row and third column, the green sub-pixel in the first row and fourth column, the green sub-pixel in the second row and third column, the blue sub-pixel in the second row and fourth column, the red sub-pixel in the third row and first column, the blue sub-pixel in the third row and third column, the green sub-pixel in the fourth row and first column, and the red sub-pixel in the fourth row and fourth column are represented by 1 (for example, 1 represents a grayscale value of 6); the grayscale values ​​of the blue sub-pixel in the first row and first column, the green sub-pixel in the third row and second column, and the blue sub-pixel in the fourth row and second column are represented by 2 (for example, 2 represents a grayscale value of 8); and the grayscale values ​​of the remaining sub-pixels are represented by 0 (for example, 0 represents a grayscale value of 0).

[0087] According to some embodiments, in step S302, the first correspondence relationship may be pre-set and stored in the driver chip. For example, the first correspondence relationship may be as shown in Table 1.

[0088] Table 1

[0089] Number of pixels lit Grey scale value of image Dithering map 1 to 3 1 to 5 Figure 4 4 to 12 6 to 8 Figure 5 or Figure 7 13 to 32 9 to 12 Figure 6

[0090] It should be noted that the number of illuminated pixels can be calculated by dividing the number of illuminated sub-pixels by 3, for example, Figure 4 The number of sub-pixels lit in is 6, and the number of pixels lit is 2. For another example, Figure 5 The number of sub-pixels lit in is 24, and the number of pixels lit is 8. For another example, Figure 6 The number of sub-pixels lit is 48 and the number of pixels lit is 16.

[0091] It should also be noted that the conversion between the grayscale value of a pixel and the grayscale value of a sub-pixel can refer to formula (1-1):

[0092]

[0093] Wherein, D is the grayscale value of the pixel, R is the grayscale value of the red sub-pixel, G is the grayscale value of the blue sub-pixel, and B is the grayscale value of the green sub-pixel.

[0094] It should also be noted that the conversion relationship between the grayscale value of an image and the grayscale value of a pixel in the image can refer to formula (1-2).

[0095]

[0096] Wherein, G is the grayscale value of the image (first grayscale value), n is the number of pixels in the image, n is a positive integer, and Dn is the grayscale value of the nth pixel in the image.

[0097] The following combination Figure 8 to Figure 11 The technical effects that can be achieved by method 300 are discussed in detail. Figure 8 to Figure 11In the middle, set the gray scale value to 12 corresponding to the voltage to the first image dithering processing, LQE algorithm in the gray scale value is 3 to 11 open, respectively verify the existing scheme in the dithering processing method and the dithering processing effect of method 300, wherein the dithering processing method in the prior art for different gray scale value of the first image uses irregular arrangement of dithering map.

[0098] As Figure 8 shown, Figure 8 (a) in the prior art, the display effect of the first image after dithering processing, Figure 8 (b) is Figure 8 (a) in the prior art, the display effect of the first image after dithering processing, Figure 8 (c) in the method 300, the display effect of the first image after dithering processing, Figure 8 (d) is Figure 8 (c) in the method 300, the display effect of the first image after dithering processing, Figure 8 (b) and Figure 8 (d) in the method 300, the display effect of the first image after dithering processing,

[0099] As Figure 9 shown, Figure 9 (a) in the prior art, the display effect of the first image after dithering processing, Figure 9 (b) is Figure 9 (a) in the prior art, the display effect of the first image after dithering processing, Figure 9 (c) in the method 300, the display effect of the first image after dithering processing, Figure 9 (d) is Figure 9 (c) in the method 300, the display effect of the first image after dithering processing, Figure 9 (b) and Figure 9 (d) in the method 300, the display effect of the first image after dithering processing,

[0100] As Figure 10 shown, Figure 10 (a) in the prior art, the display effect of the first image after dithering processing, Figure 10 (b) is Figure 10 (a) in the prior art, the display effect of the first image after dithering processing, Figure 10 (c) in the method 300, the display effect of the first image after dithering processing, Figure 10 (d) is Figure 10 (c) in the method 300, the display effect of the first image after dithering processing, Figure 10 (b) and Figure 10From the comparison of (d), it can be seen that when the LQE algorithm is enabled with a grayscale value of 8, the number of horizontal or vertical stripes in the displayed image processed by method 300 is significantly reduced, and the graininess is significantly alleviated.

[0101] In summary, in existing solutions, when the driver chip performs dithering on first images with different grayscale values, it needs to use irregularly arranged dither patterns. This exacerbates the occurrence of horizontal and vertical stripes in the display panel and causes the displayed image to exhibit a heavier sense of graininess. In method 300, the first dither pattern includes multiple regularly arranged second dither patterns, and the grayscale values ​​of the corresponding first pixels in the multiple second dither patterns are the same. In this way, when the display panel displays the dithered second image, it can eliminate horizontal or vertical stripes and reduce the sense of graininess in the display, thereby improving the user's visual experience.

[0102] Figure 11 This is a schematic diagram showing how the brightness curves of an existing solution and an optimized solution vary with grayscale values ​​according to an embodiment of the present application.

[0103] like Figure 11 As shown, after the first image is dithered by the existing solution, the image is better than that without dithering ( Figure 11 ), the display brightness value at each grayscale value is significantly improved, and the curve exhibits large fluctuations and non-smooth characteristics. However, after the first image is dithered using method 300, the variation in the display brightness value at each grayscale value is significantly reduced compared to without dithering, and the curve is smoother, showing a gradual and continuous change in the display brightness value. This demonstrates that method 300 can effectively improve the image brightness performance, ensuring that the overall brightness difference between images before and after dithering remains at a low level, which helps achieve smoother grayscale transitions.

[0104] It should be understood that in the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between the various embodiments are consistent and can be referenced by each other, and the technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

[0105] Figure 12 1 is a schematic diagram of a processing device provided in an embodiment of the present application. The device 1200 may include an acquisition unit 1210, a storage unit 1220, and a processing unit 1230. The acquisition unit 1210 is used to acquire instructions and / or data, the storage unit 1220 is used to implement corresponding storage functions and store corresponding instructions and / or data, and the processing unit 1230 is used to process data, so that the device 1200 implements the aforementioned processing method.

[0106] In one embodiment, the apparatus 1200 comprises: an obtaining unit 1210, configured to obtain a first pixel point number of light and a first gray scale value of a first image; and a processing unit 1230, configured to: determine a first dithering map according to the first pixel point number of light, the first gray scale value, and a first correspondence relationship, the first dithering map comprising a plurality of periodically arranged second dithering maps, the first correspondence relationship being a correspondence relationship among a pixel point number of light, a gray scale value, and a dithering map; and adjust a gray scale value of at least part of pixels in the first image according to the first dithering map to obtain a second image.

[0107] In a possible implementation, the first dithering map comprises a plurality of pixels distributed in M rows and N columns, the plurality of pixels comprising a first pixel, the first pixel comprising a sub-pixel with a gray scale value other than 0, M and N being positive integers.

[0108] In a possible implementation, M=4, N=8, the second dithering map comprises P pixels distributed in 4 rows and 4 columns, each pixel comprising: a first sub-pixel, a second sub-pixel, and a third sub-pixel; a first sub-pixel in the first row and the third column, a third sub-pixel in the third row and the fourth column, and a second sub-pixel in the fourth row and the second column of the P pixels have a first value, the first value being greater than 0, and the gray scale values of the remaining sub-pixels being 0.

[0109] In a possible implementation, M=4, N=8, the second dithering map comprises P pixels distributed in 4 rows and 4 columns, each pixel comprising: a first sub-pixel, a second sub-pixel, and a third sub-pixel; a third sub-pixel in the first row and the first column, a first sub-pixel in the first row and the third column, a second sub-pixel in the first row and the fourth column, a second sub-pixel in the second row and the third column, a third sub-pixel in the second row and the fourth column, a first sub-pixel in the third row and the first column, a second sub-pixel in the third row and the second column, a third sub-pixel in the third row and the third column, a second sub-pixel in the fourth row and the first column, a first sub-pixel and a third sub-pixel in the fourth row and the second column, and a first sub-pixel in the fourth row and the fourth column of the P pixels have a first value, the first value being greater than 0, and the gray scale values of the remaining sub-pixels being 0.

[0110] In a possible implementation, M=4, N=8, the second dithering map comprises P pixels distributed in 4 rows and 4 columns, each pixel comprising: a first sub-pixel, a second sub-pixel, and a third sub-pixel; a second sub-pixel in the first row and the first column, the first row and the third column, the second row and the second column, the second row and the fourth column, the third row and the first column, the third row and the third column, the fourth row and the second column, and the fourth row and the fourth column of the P pixels have a first value, the first value being greater than 0, and the gray scale values of the remaining sub-pixels being 0; a first sub-pixel and a third sub-pixel in the first row and the second column, the first row and the fourth column, the second row and the first column, the second row and the third column, the third row and the second column, the third row and the fourth column, the fourth row and the first column, and the fourth row and the third column of the P pixels have the first value, and the gray scale values of the remaining sub-pixels being 0.

[0111] In a possible implementation, M=4, N=8, the second dithering map includes P pixels distributed in 4 rows and 4 columns, each pixel includes: a first sub-pixel, a second sub-pixel, and a third sub-pixel; the gray scale values of the first sub-pixel in the first row and the third column, the second sub-pixel in the first row and the fourth column, the second sub-pixel in the second row and the third column, the third sub-pixel in the second row and the fourth column, the first sub-pixel in the third row and the first column, the third sub-pixel in the third row and the third column, the second sub-pixel in the fourth row and the first column, the first sub-pixel in the fourth row and the second column, and the first sub-pixel in the fourth row and the fourth column in the P pixels are a first value, the first value is greater than 0; the gray scale values of the third sub-pixel in the first row and the first column, the second sub-pixel in the third row and the second column, and the third sub-pixel in the fourth row and the second column in the P pixels are a second value, the second value is greater than the first value; the gray scale values of the remaining sub-pixels are 0.

[0112] Figure 13 is another schematic diagram of a processing apparatus provided in the present application.

[0113] The apparatus 1300 includes a memory 1310, a processor 1320, and a communication interface 1330. The memory 1310, the processor 1320, and the communication interface 1330 are connected through an internal connection path. The memory 1310 is configured to store instructions. The processor 1320 is configured to execute the instructions stored in the memory 1310 to control the communication interface 1330 to acquire information, so that the apparatus 1300 implements the processing method described above. Optionally, the memory 1310 can be coupled to the processor 1320 through an interface, or the memory 1310 can be integrated with the processor 1320.

[0114] It should be noted that the communication interface 1330 uses a transceiving device such as but not limited to a transceiver. The communication interface 1330 can also include an input / output interface.

[0115] The processor 1320 stores one or more computer programs, and the one or more computer programs include instructions. When the instructions are executed by the processor 1320, the processing apparatus 1300 executes the processing method in each of the embodiments described above.

[0116] During implementation, each step of the above method can be completed by an integrated logic circuit of the hardware in the processor 1320 or by instructions in the form of software. The method disclosed in conjunction with the embodiments of the present application can be directly embodied as being executed by a hardware processor, or can be executed by a combination of hardware and software modules in the processor. The software module can be located in a mature storage medium in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 1310, and the processor 1320 reads the information in the memory 1310 and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.

[0117] Optionally, Figure 13 The communication interface 1330 can be implemented Figure 12 The acquisition unit 1210 in Figure 13 The memory 1310 in the embodiment can be implemented Figure 12 The storage unit 1220, Figure 13 The processor 1320 in the embodiment can implement Figure 12 The processing unit 1230 in .

[0118] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a program code. When the computer program code is executed on a computer, the computer is enabled to execute the above method 300.

[0119] An embodiment of the present application further provides a computer program product, which includes a computer program. When the computer program is executed, the computer executes the above method 300.

[0120] An embodiment of the present application further provides a chip, including: a circuit, which is used to execute the above method 300.

[0121] The embodiment of the present application further provides a display panel, which includes: Figure 12 or Figure 13 The processing device shown.

[0122] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0123] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0124] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0125] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0126] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit.

[0127] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application or the essential part or part of the technical solutions that make contributions to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various program code storage media.

[0128] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A processing method characterized by, The method is applied to a driving chip, and the method comprises: obtaining a first pixel point light quantity and a first gray scale value of a first image; determining a first dithering map according to the first pixel point light quantity, the first gray scale value and a first corresponding relationship, the first corresponding relationship being a corresponding relationship among a pixel point light quantity, a gray scale value and a dithering map, the first dithering map comprising a plurality of periodically arranged second dithering maps, the first dithering map comprising a plurality of pixels distributed in M rows and N columns, the plurality of pixels comprising a first pixel, the first pixel comprising a sub-pixel with a gray scale value of 0, M and N being positive integers; adjusting a gray scale value of at least part of pixels in the first image according to the first dithering map to obtain a second image; wherein a conversion relationship between the first gray scale value and a gray scale value of a pixel in the first image is referenced to a formula: G= G is the first gray scale value, n is a number of the pixels in the first image, n being a positive integer, and Dn is a gray scale value of an nth pixel in the first image; a conversion relationship between a gray scale value of a pixel in the first image and a gray scale value of a sub-pixel is referenced to a formula: D= D is the gray scale value of the pixel in the first image, R is a gray scale value of a red sub-pixel, G is a gray scale value of a blue sub-pixel, and B is a gray scale value of a green sub-pixel.

2. The method of claim 1, wherein, M=4, N=8, the second dithering map comprising P pixels distributed in 4 rows and 4 columns, each pixel comprising a first sub-pixel, a second sub-pixel and a third sub-pixel; a gray scale value of the first sub-pixel in the first row and the third column, the third sub-pixel in the third row and the fourth column and the second sub-pixel in the fourth row of the P pixels is a first value, the first value being greater than 0, and a gray scale value of the remaining sub-pixels being 0.

3. The method of claim 1, wherein, M=4, N=8, the second dithering map comprising P pixels distributed in 4 rows and 4 columns, each pixel comprising a first sub-pixel, a second sub-pixel and a third sub-pixel; a gray scale value of the third sub-pixel in the first row and the first column, the first sub-pixel in the first row and the third column, the second sub-pixel in the first row and the fourth column, the second sub-pixel in the second row and the third column, the third sub-pixel in the second row and the fourth column, the first sub-pixel in the third row and the first column, the second sub-pixel in the third row and the second column, the third sub-pixel in the third row and the third column, the second sub-pixel in the fourth row and the first column, the first sub-pixel and the third sub-pixel in the fourth row and the second column and the first sub-pixel in the fourth row and the fourth column of the P pixels is a first value, the first value being greater than 0, and a gray scale value of the remaining sub-pixels being 0.

4. The method of claim 1, wherein, M=4, N=8, the second dithering map comprising P pixels distributed in 4 rows and 4 columns, each pixel comprising a first sub-pixel, a second sub-pixel and a third sub-pixel; a gray scale value of the second sub-pixel in the first row and the first column, the first row and the third column, the second row and the second column, the second row and the fourth column, the third row and the first column, the third row and the third column, the fourth row and the second column and the fourth row and the fourth column of the P pixels is a first value, the first value being greater than 0, and a gray scale value of the remaining sub-pixels being 0. The first sub-pixel and the third sub-pixel in the first row and the second column, the first row and the fourth column, the second row and the first column, the second row and the third column, the third row and the second column, the third row and the fourth column, the fourth row and the first column, and the fourth row and the third column of the P pixels are the first value, and the gray scale values of the remaining sub-pixels are 0.

5. The method of claim 1, wherein, M=4, N=8, the second dithering map includes P pixels distributed in 4 rows and 4 columns, each pixel includes: a first sub-pixel, a second sub-pixel and a third sub-pixel; The gray scale values of the first sub-pixel in the first row and the third column, the second sub-pixel in the first row and the fourth column, the second sub-pixel in the second row and the third column, the third sub-pixel in the second row and the fourth column, the first sub-pixel in the third row and the first column, the third sub-pixel in the third row and the third column, the second sub-pixel in the fourth row and the first column, the first sub-pixel in the fourth row and the second column, and the first sub-pixel in the fourth row and the fourth column of the P pixels are a first value, and the first value is greater than 0; The gray scale values of the third sub-pixel in the first row and the first column, the second sub-pixel in the third row and the second column, and the third sub-pixel in the fourth row and the second column are a second value, and the second value is greater than the first value. The gray scale values of the remaining sub-pixels are 0.

6. A processing device, characterized by The apparatus includes units or modules for implementing the method of any one of claims 1 to 5.

7. A processing device, characterized by The apparatus includes a processor and a memory, the processor is coupled with the memory, the memory is used to store computer programs or instructions, and the processor is used to execute the computer programs or instructions in the memory, so that the method of any one of claims 1 to 5 is executed.

8. A chip, characterized by The chip includes a circuit, and the circuit is used to execute the method of any one of claims 1 to 5.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores program codes, and when the program codes are run on a computer, the computer executes the method of any one of claims 1 to 5.

10. A display panel, characterized by, The display panel includes the processing apparatus of claim 6 or 7.

Images