WO2019085112A1 - Oled显示面板的灰阶补偿表的压缩方法 - Google Patents
Oled显示面板的灰阶补偿表的压缩方法 Download PDFInfo
- Publication number
- WO2019085112A1 WO2019085112A1 PCT/CN2017/113685 CN2017113685W WO2019085112A1 WO 2019085112 A1 WO2019085112 A1 WO 2019085112A1 CN 2017113685 W CN2017113685 W CN 2017113685W WO 2019085112 A1 WO2019085112 A1 WO 2019085112A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compensation
- compensation table
- gray scale
- quality
- tables
- Prior art date
Links
Images
Classifications
-
- 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]
- G09G3/3225—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] using an active matrix
-
- 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
- G09G2320/0285—Improving the quality of display appearance using tables for spatial correction of display data
-
- 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
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
-
- 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
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
- G09G2320/045—Compensation of drifts in the characteristics of light emitting or modulating elements
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/02—Handling of images in compressed format, e.g. JPEG, MPEG
Definitions
- the present invention relates to the field of display technologies, and in particular, to a method for compressing a gray scale compensation table of an OLED display panel.
- the organic light emitting diode (OLED) display device has self-luminous, low driving voltage, high luminous efficiency, short response time, high definition and contrast, near 180° viewing angle, wide temperature range, and flexible display and large-area full-color display. And many other advantages, recognized by the industry as the most promising display device.
- the OLED display device can be classified into two types: passive matrix OLED (PMOLED) and active matrix OLED (AMOLED) according to the driving method.
- PMOLED passive matrix OLED
- AMOLED active matrix OLED
- the AMOLED has pixels arranged in an array, belongs to an active display type, has high luminous efficiency, and is generally used as a high-definition large-sized display device.
- the prior art generally uses a compensation table to store compensation information of each pixel in the OLED display panel.
- the driver board looks up the compensation table, adjusts the signal, raises the signal in the dark area of the panel, and lowers the signal in the over-bright area to present a uniform display effect.
- each pixel corresponds to a set of compensation information, and each set of compensation information includes one or more compensation data.
- the compensation data is an adjustment value of a specific gray scale.
- the size of the compensation table is generally equal to the number of pixels multiplied by the size of each set of compensation information, and the compensation table occupies a large amount of system storage space.
- An OLED display panel corresponds to a plurality of compensation tables of different color channels and different gray levels.
- the compensation table needs to be compressed and stored first.
- the compensation data stored in the compensation table is an adjustment value of a specific gray scale
- each gray scale compensation table actually corresponds to one image, and the compression of the gray scale compensation table is actually equal to Compress the image.
- each grayscale compensation table will affect the compensation of a certain color channel and a certain grayscale. effect. If there is insufficient quality of a compensation table in a set of gray scale compensation tables of the display panel, the quality of the panel will be affected.
- the existing encoder can support the encoding of 4:0:0, 4:2:2 and 4:4:4 color space, and the existing encoder can be used to encode the image, that is, the gray scale compensation table can realize the compressed gray scale compensation table. the goal of.
- the configuration used in the prior art for encoding the grayscale compensation table is All Intra, that is, intra coding is performed for each compensation table.
- each compensation table is independent, and there is no correlation between the compensation table and the compensation table.
- only the intra prediction module is used to reduce intraframe redundancy. Redundancy between different compensation tables is not considered.
- the quantization coefficient (QP) when the quantization coefficient (QP) is set, only the compression effect of the compensation table is targeted, and the optimization of the overall target is not considered. In fact, the quality of the display panel is guaranteed only when all the picture quality of a set of compensation tables is up to standard.
- the disadvantage of the compression method of the gray scale compensation table of the existing OLED display panel is that the redundancy between images is not considered when compressing each image; when the quantization coefficient (QP) is set, the The overall optimal performance of a compressed multiple compensation table.
- the object of the present invention is to provide a compression method for a gray scale compensation table of an OLED display panel.
- the redundancy between the same color channel and different gray scale images is eliminated as much as possible, and the compression compensation table is improved. Efficiency and performance.
- the present invention provides a method for compressing a gray scale compensation table of an OLED display panel, including:
- Step 10 When transmitting a set of gray scale compensation tables of the OLED panel to the encoder for encoding, first, different gray scale compensation tables having the same color channel and different gray levels in the gray scale compensation table are differentiated. Computing to obtain a corresponding reference image and a difference image as a substitute for the plurality of grayscale compensation tables;
- Step 20 transmitting the corresponding reference image and the difference image to the encoder as a substitute for the multiple grayscale compensation table
- Step 30 The encoder performs coding compression on the received grayscale compensation table.
- step 30 when the encoder performs coding compression, the quantization coefficients of each compensation table are adaptively adjusted: under the premise of satisfying the overall compression ratio, the quality of each compensation table before and after the coding is expected to be expected, or each compensation The quality of the table is close.
- step 10 for the N gray scale compensation tables having the same color channel and different gray levels, one gray scale compensation table is taken as the reference image, and the other N-1 gray scale compensation tables are differentially operated.
- N gray scale compensation for the same color channel and different gray levels Table divide it into M group, M ⁇ N/2, each set of N/M gray scale compensation table, for each set of gray scale compensation table, do the following processing: take one gray scale compensation table as the reference image, Other N/M-1 grayscale compensation tables perform differential operations.
- step 10 for the N gray scale compensation tables having the same color channel and different gray levels, one gray scale compensation table is taken as the reference image, and the other N-1 gray scale compensation tables are differentially operated to obtain N- One difference image; in the N-1 difference image, another difference image is taken as a reference, and the remaining N-2 sheets are subjected to differential operation again.
- the method further includes: obtaining the corresponding reference image and the difference image during decoding, and adding the corresponding reference image and the difference image to each other to obtain a gray scale compensation table after decompression.
- Step 30 includes:
- the coding quality after sorting is evaluated as V1, V2, V3...VN (V1 ⁇ V2 ⁇ ... ⁇ VN), and the corresponding compensation table is G1, G2...GN;
- V1 ⁇ V2 ⁇ ... ⁇ VN the coding quality after sorting
- the N compensation tables are divided into three categories; if V i ⁇ V N/2 -value1, the picture is placed into the class ⁇ ; V N/2 -value1 ⁇ V i ⁇ V N/2 +value1, the picture is placed into the class ⁇ ; if V i >V N/2 +value1 , the picture is placed into the class ⁇ ; the compensation in the class ⁇
- the table coding quality is the best; the compensation quality of the compensation table in the class ⁇ is medium; the compensation quality of the compensation table in the class ⁇ is the worst;
- Steps b) to c) are repeated until the condition A or B is satisfied, and the code is exited.
- the image quality is measured by a peak signal to noise ratio.
- the quantized coefficient is initialized to 10.
- the invention also provides a compression method for a gray scale compensation table of an OLED display panel, comprising:
- Step 10 When transmitting a set of gray scale compensation tables of the OLED panel to the encoder for encoding, first, different gray scale compensation tables having the same color channel and different gray levels in the gray scale compensation table are differentiated. Computing to obtain a corresponding reference image and a difference image as a substitute for the plurality of grayscale compensation tables;
- Step 20 transmitting the corresponding reference image and the difference image to the encoder as a substitute for the multiple grayscale compensation table
- Step 30 The encoder encodes and compresses the received grayscale compensation table.
- step 30 when the encoder performs coding compression, the quantization coefficients of each compensation table are adaptively adjusted: under the premise of satisfying the overall compression ratio, the quality of each compensation table before and after the coding is expected to be expected, or each compensation The quality of the table is close;
- the method further includes: obtaining the corresponding reference image and the difference image when decoding, adding the corresponding reference image and the difference image to each other to decompress the gray scale compensation table;
- Step 30 includes:
- the coding quality after sorting is evaluated as V1, V2, V3...VN (V1 ⁇ V2 ⁇ ... ⁇ VN), and the corresponding compensation table is G1, G2...GN;
- V1 ⁇ V2 ⁇ ... ⁇ VN the coding quality after sorting
- the N compensation tables are divided into three categories; if V i ⁇ V N/2 -value1, the picture is placed into the class ⁇ ; V N/2 -value1 ⁇ V i ⁇ V N/2 +value1, the picture is placed into the class ⁇ ; if V i >V N/2 +value1 , the picture is placed into the class ⁇ ; the compensation in the class ⁇
- the table coding quality is the best; the compensation quality of the compensation table in the class ⁇ is medium; the compensation quality of the compensation table in the class ⁇ is the worst;
- the image quality is measured by a peak signal to noise ratio.
- the compression method of the gray scale compensation table of the OLED display panel of the present invention performs frame level difference between the same color component and different gray scale compensation tables in the same group of OLED compensation tables, thereby improving the efficiency and performance of the compression compensation table. ; adaptively adjust the quantization coefficient of each compensation table, under the premise of satisfying the overall compression ratio, the quality of each compensation table before and after the coding is expected, or the quality of each compensation table is close.
- FIG. 1 is a flow chart of a method for compressing a gray scale compensation table of an OLED display panel of the present invention
- FIG. 2 is a flow chart of an overall algorithm of a preferred embodiment of a method for compressing a gray scale compensation table of an OLED display panel according to the present invention
- FIG. 3 is a schematic diagram of a process of differentially encoding a compensation table according to a preferred embodiment of a method for compressing a gray scale compensation table of an OLED display panel of the present invention
- 4a, 4b and 4c are schematic diagrams of gray scale compensation tables oled_2_024, oled_2_064 and their difference images, respectively.
- FIG. 1 is a flowchart of a method for compressing a gray scale compensation table of an OLED display panel according to the present invention
- the present invention mainly includes:
- Step 10 When transmitting a set of gray scale compensation tables of the OLED panel to the encoder for encoding, first, different gray scale compensation tables having the same color channel and different gray levels in the gray scale compensation table are differentiated. Computing to obtain a corresponding reference image and a difference image as the plurality of grayscale patches Substitute for reimbursement;
- Step 20 transmitting the corresponding reference image and the difference image to the encoder as a substitute for the multiple grayscale compensation table
- Step 30 The encoder performs coding compression on the received grayscale compensation table.
- FIG. 2 is a flowchart of an overall algorithm of a compression method of a gray scale compensation table of an OLED display panel according to the present invention
- FIG. 3 is a schematic diagram of a process of differentially encoding a compensation table according to the preferred embodiment.
- the invention eliminates redundancy between the same color channel and different gray-scale images as much as possible, and improves the efficiency and performance of the compression compensation table.
- the quantization coefficient of each compensation table is adaptively adjusted at the encoding end, and the overall compression ratio is up to standard, and the overall image quality is optimized.
- One OLED panel corresponds to multiple compensation tables.
- the difference operation is first performed, then the reference quantity and the difference quantity are transmitted to the coding module, and the quantization coefficient is iteratively adjusted until the overall compression rate reaches the preset condition, and the images of the compensation tables are obtained.
- the quality is up to standard, or the difference in image quality between the compensation tables is less than the threshold.
- one of them is taken as a reference, and the other N-1 sheets are subjected to a differential operation. Then, one reference image and N-1 differential images are separately encoded. After decoding by the decoding end, the difference image and the reference image are restored and added to each other to obtain a decoded image.
- these compensation tables are divided into M (M ⁇ N / 2) groups, each set of N / M sheet compensation table. The encoding end does this for each set of compensation tables: taking one picture as the reference and N/M-1 for the differential operation. After decoding at the decoding end, the difference image is restored and added to the corresponding reference image to obtain a decoded image.
- N-1 differential images are encoded separately.
- N-2 differential images are restored first, and then N-1 differential images are restored to obtain a decoded image.
- the quantization coefficient is adaptively adjusted.
- the decompressed compensation table needs to satisfy condition A or condition B: all image quality is greater than Vg, and the condition is denoted as A; in all images, the difference between the best quality and the lowest quality is less than Vt, and the condition is denoted as B.
- the N compensation tables are divided into three categories. If V i ⁇ V N/2 -value1, the picture is placed into the class ⁇ ; if V N/2 -value1 ⁇ V i ⁇ V N/2 +value1, the picture is placed into the class ⁇ ; if V i >V N/2 +value1, the picture is placed in class ⁇ .
- the compensation quality of the compensation table in class ⁇ is the best; the coding quality of the compensation table in class ⁇ is medium; the compensation quality of the compensation table in class ⁇ is the worst.
- the average values of gray1 and gray2 are calculated, and are respectively referred to as mean(gray1) and mean(gray2).
- mean(gray1) and mean(gray2) For each pixel value of gray1, perform differential operation according to formula (1) (set the resolution of the compensation table to width ⁇ height (width ⁇ height), width>i ⁇ 0, height>j ⁇ 0).
- Gray1(i,j) gray2(i,j)+mean(gray1)-mean(gray2)-gray1(i,j)(1)
- gray1 is adjusted according to formula (2) to ensure that each pixel value in the gray1 image is not less than zero.
- the difference image gray1' of gray1 is obtained (the process of obtaining gray2' is similar).
- Gray1(i,j)' gray2(i,j)-gray1(i,j)+diff_va (3)
- code gray2, gray1', and gray3' are respectively encoded.
- the encoding encodes a parameter diff_val for each of gray1' and gray3' images.
- the decoding end reads the diff_val from the code stream, and decodes the compressed image gray2, gray1', and gray3'.
- the difference image is restored according to formula (4).
- Gray1(i,j) gray2(i,j)-gray1(i,j)'+diff_va (4)
- 4a, 4b, and 4c are gray-scale compensation tables oled_2_024, oled_2_064, and their difference images, respectively, and the difference between the compensation tables is performed to remove high-frequency components.
- the difference image of oled_2_024 has been much reduced compared to its original image, so the compression gain is naturally much improved when it is compressed.
- the test sequence is 4 sets of OLED panels oled3, oled6, oled9 and oled12 (the number is used to distinguish the OLED panel size specifications), and the 4 sets of OLED compensation tables are composed of 4 chrominance components (R, G, B, W) and 3 kinds of ash.
- the order composition, each chroma component corresponds to 3 gray scales, a total of 12 compensation table images.
- the resolution of oled3 is 1920 ⁇ 2160
- the resolution of oled6, oled9, and oled12 is 1080 ⁇ 1920.
- Table 1 The compression performance results are shown in Table 1.
- the N compensation tables are divided into three categories. If V i ⁇ V N/2 -2, the picture is placed into the class ⁇ ; if V N/2 -2 ⁇ V i ⁇ V N/2 + 2, the picture is placed into the class ⁇ ; if V i >V N/2 +2, the picture is placed in class ⁇ .
- the compensation quality of the compensation table in class ⁇ is the best; the coding quality of the compensation table in class ⁇ is medium; the compensation quality of the compensation table in class ⁇ is the worst.
- the PSNR of the compensation table in class ⁇ is >54; the PSNR of the compensation table in class ⁇ is ⁇ 50; and the compensation table of class ⁇ is 50 ⁇ PSNR ⁇ 54.
- increase The quantization coefficient of the compensation table in the class ⁇ reduces the quantization coefficient of the compensation table in the class ⁇ , and the quantization coefficient of the compensation table in the class ⁇ remains unchanged.
- the compression method of the gray scale compensation table of the OLED display panel of the present invention performs frame level difference between the same color component and different gray scale compensation tables in the same group of OLED compensation tables, thereby improving the efficiency and performance of the compression compensation table. ; adaptively adjust the quantization coefficient of each compensation table, under the premise of satisfying the overall compression ratio, the quality of each compensation table before and after the coding is expected, or the quality of each compensation table is close.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of El Displays (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Description
序列 | BD-rate |
oled3 | -15.3% |
oled6 | -9.6% |
oled9 | -20.0% |
oled12 | -12.1% |
平均 | -14.2% |
Claims (14)
- 一种OLED显示面板的灰阶补偿表的压缩方法,包括:步骤10、在将OLED面板所具有的一组灰阶补偿表传输至编码器以编码时,首先对该组灰阶补偿表中具有相同色彩通道、不同灰阶的多张灰阶补偿表进行差分运算以得到相应的基准图像和差分图像作为该多张灰阶补偿表的替代者;步骤20、将该相应的基准图像和差分图像作为该多张灰阶补偿表的替代者传输至编码器;步骤30、编码器对接收的灰阶补偿表进行编码压缩。
- 如权利要求1所述的OLED显示面板的灰阶补偿表的压缩方法,其中,步骤30中,编码器进行编码压缩时,自适应调整各张补偿表的量化系数:在满足整体压缩率的前提下,使编码前后各张补偿表的质量均达到预期,或各张补偿表的质量接近。
- 如权利要求1所述的OLED显示面板的灰阶补偿表的压缩方法,其中,步骤10中,对于具有相同色彩通道、不同灰阶的N张灰阶补偿表,取其中一张灰阶补偿表作为基准图像,其他N-1张灰阶补偿表进行差分操作。
- 如权利要求1所述的OLED显示面板的灰阶补偿表的压缩方法,其中,步骤10中,对于具有相同色彩通道、不同灰阶的N张灰阶补偿表,将其分为M组,M≤N/2,每组N/M张灰阶补偿表,对每组灰阶补偿表都做如下处理:取其中一张灰阶补偿表作为基准图像,其他N/M-1张灰阶补偿表进行差分操作。
- 如权利要求1所述的OLED显示面板的灰阶补偿表的压缩方法,其中,步骤10中,对于具有相同色彩通道、不同灰阶的N张灰阶补偿表,取其中一张灰阶补偿表作为基准图像,其他N-1张灰阶补偿表进行差分操作得到N-1张差分图像;在N-1张差分图像中,再取一张差分图像作为基准,剩下的N-2张再次进行差分操作。
- 如权利要求1所述的OLED显示面板的灰阶补偿表的压缩方法,还包括:解码时得到该相应的基准图像和差分图像,将该相应的基准图像和差分图像彼此相加得解压后的灰阶补偿表。
- 如权利要求2所述的OLED显示面板的灰阶补偿表的压缩方法,其中,设解压后的灰阶补偿表需要满足条件A或者条件B:所有图像质量大于Vg,该条件记为A;所有图像中,最佳质量与最次质量之差小于Vt,该 条件记为B;步骤30包括:a)量化系数初始化;b)压缩编码,若实际压缩率>预设压缩率,则增大量化系数;否则减小量化系数。按照这一准则重复编码,直至量化系数=Qpbase时满足实际压缩率≤预设压缩率;且量化系数=Qpbase-1时,实际压缩率>预设压缩率,停止循环;若所有补偿表解压后都满足条件A或B,则退出编码;c)否则,设置阈值value1:I.根据编码质量从小到大进行排序,设排序后的编码质量评价为V1、V2、V3…VN(V1<V2<…<VN),对应的补偿表为G1、G2…GN;假定在此编码质量评估方法中,V值越小,质量越高;II.以编码质量中等的那张补偿表GN/2为基准,共将N张补偿表分为三类;若Vi<VN/2-value1,则将图片放置到类α中;若VN/2-value1≤Vi≤VN/2+value1,则将图片放置到类β中;若Vi>VN/2+value1,则将图片放置到类γ中;类α中补偿表编码质量最好;类β中补偿表编码质量中等;类γ中补偿表编码质量最差;III.减少类γ中补偿表的量化系数,增大类α中补偿表的量化系数,类β中补偿表的量化系数保持不变,进行重新编码;重复步骤b)~c),直至满足条件A或B时,退出编码。
- 如权利要求7所述的OLED显示面板的灰阶补偿表的压缩方法,其中,所述图像质量以峰值信噪比来衡量。
- 如权利要求7所述的OLED显示面板的灰阶补偿表的压缩方法,其中,所述量化系数初始化为10。
- 一种OLED显示面板的灰阶补偿表的压缩方法,包括:步骤10、在将OLED面板所具有的一组灰阶补偿表传输至编码器以编码时,首先对该组灰阶补偿表中具有相同色彩通道、不同灰阶的多张灰阶补偿表进行差分运算以得到相应的基准图像和差分图像作为该多张灰阶补偿表的替代者;步骤20、将该相应的基准图像和差分图像作为该多张灰阶补偿表的替代者传输至编码器;步骤30、编码器对接收的灰阶补偿表进行编码压缩;其中,步骤30中,编码器进行编码压缩时,自适应调整各张补偿表的量化系数:在满足整体压缩率的前提下,使编码前后各张补偿表的质量均达到预期,或各张补偿表的质量接近;还包括:解码时得到该相应的基准图像和差分图像,将该相应的基准图像和差分图像彼此相加得解压后的灰阶补偿表;其中,设解压后的灰阶补偿表需要满足条件A或者条件B:所有图像质量大于Vg,该条件记为A;所有图像中,最佳质量与最次质量之差小于Vt,该条件记为B;步骤30包括:d)量化系数初始化;e)压缩编码,若实际压缩率>预设压缩率,则增大量化系数;否则减小量化系数。按照这一准则重复编码,直至量化系数=Qpbase时满足实际压缩率≤预设压缩率;且量化系数=Qpbase-1时,实际压缩率>预设压缩率,停止循环;若所有补偿表解压后都满足条件A或B,则退出编码;f)否则,设置阈值value1:I.根据编码质量从小到大进行排序,设排序后的编码质量评价为V1、V2、V3…VN(V1<V2<…<VN),对应的补偿表为G1、G2…GN;假定在此编码质量评估方法中,V值越小,质量越高;II.以编码质量中等的那张补偿表GN/2为基准,共将N张补偿表分为三类;若Vi<VN/2-value1,则将图片放置到类α中;若VN/2-value1≤Vi≤VN/2+value1,则将图片放置到类β中;若Vi>VN/2+value1,则将图片放置到类γ中;类α中补偿表编码质量最好;类β中补偿表编码质量中等;类γ中补偿表编码质量最差;III.减少类γ中补偿表的量化系数,增大类α中补偿表的量化系数,类β中补偿表的量化系数保持不变,进行重新编码;重复步骤b)~c),直至满足条件A或B时,退出编码;其中,所述图像质量以峰值信噪比来衡量。
- 如权利要求10所述的OLED显示面板的灰阶补偿表的压缩方法,其中,步骤10中,对于具有相同色彩通道、不同灰阶的N张灰阶补偿表,取其中一张灰阶补偿表作为基准图像,其他N-1张灰阶补偿表进行差分操作。
- 如权利要求10所述的OLED显示面板的灰阶补偿表的压缩方法,其中,步骤10中,对于具有相同色彩通道、不同灰阶的N张灰阶补偿表,将其分为M组,M≤N/2,每组N/M张灰阶补偿表,对每组灰阶补偿表都做如下处理:取其中一张灰阶补偿表作为基准图像,其他N/M-1张灰阶补偿表进行差分操作。
- 如权利要求10所述的OLED显示面板的灰阶补偿表的压缩方法,其中,步骤10中,对于具有相同色彩通道、不同灰阶的N张灰阶补偿表,取其中一张灰阶补偿表作为基准图像,其他N-1张灰阶补偿表进行差分操作得到N-1张差分图像;在N-1张差分图像中,再取一张差分图像作为基准,剩下的N-2张再次进行差分操作。
- 如权利要求10所述的OLED显示面板的灰阶补偿表的压缩方法,其中,所述量化系数初始化为10。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020519121A JP6913827B2 (ja) | 2017-11-02 | 2017-11-30 | Oled表示パネルのグレースケール補正表の圧縮方法 |
KR1020207015708A KR102316176B1 (ko) | 2017-11-02 | 2017-11-30 | Oled 디스플레이 패널의 그레이스케일 보상표의 압축방법 |
EP17930677.4A EP3706106A4 (en) | 2017-11-02 | 2017-11-30 | METHOD OF COMPRESSING A GRAY SCALE COMPENSATION TABLE OF AN OLED DISPLAY BOARD |
US15/744,809 US10666292B2 (en) | 2017-11-02 | 2017-11-30 | Compressing method of a grayscale compensation table of an OLED display panel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711066079.8A CN107799065B (zh) | 2017-11-02 | 2017-11-02 | Oled显示面板的灰阶补偿表的压缩方法 |
CN201711066079.8 | 2017-11-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019085112A1 true WO2019085112A1 (zh) | 2019-05-09 |
Family
ID=61548751
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2017/113685 WO2019085112A1 (zh) | 2017-11-02 | 2017-11-30 | Oled显示面板的灰阶补偿表的压缩方法 |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3706106A4 (zh) |
JP (1) | JP6913827B2 (zh) |
KR (1) | KR102316176B1 (zh) |
CN (1) | CN107799065B (zh) |
WO (1) | WO2019085112A1 (zh) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108877740B (zh) | 2018-07-25 | 2020-09-22 | 昆山国显光电有限公司 | 获取Mura补偿数据的方法、装置、计算机设备及存储介质 |
CN108682388A (zh) | 2018-07-27 | 2018-10-19 | 京东方科技集团股份有限公司 | 数据压缩及解压缩方法、装置和显示装置 |
CN110176210B (zh) | 2018-07-27 | 2021-04-27 | 京东方科技集团股份有限公司 | 显示驱动、压缩解压缩方法及装置、显示装置、存储介质 |
CN109147696B (zh) * | 2018-09-03 | 2021-02-26 | 重庆惠科金渝光电科技有限公司 | 数据处理方法、显示装置和计算机可读存储介质 |
US11113999B2 (en) | 2018-09-03 | 2021-09-07 | Chongqing Hkc Optoelectronics Technology Co., Ltd. | Data processing method, display device, and computer-readable storage medium |
CN109300444B (zh) * | 2018-12-03 | 2020-01-21 | 深圳市华星光电半导体显示技术有限公司 | 补偿表的压缩方法 |
CN109324778B (zh) * | 2018-12-04 | 2020-03-27 | 深圳市华星光电半导体显示技术有限公司 | 补偿表压缩方法 |
CN109801581B (zh) | 2019-01-31 | 2022-04-19 | 武汉天马微电子有限公司 | 显示面板补偿灰阶值确定方法和装置、显示装置 |
CN109741715B (zh) * | 2019-02-25 | 2020-10-16 | 深圳市华星光电技术有限公司 | 显示面板的补偿方法、补偿装置及存储介质 |
CN110162290B (zh) * | 2019-05-28 | 2022-06-14 | 易诚高科(大连)科技有限公司 | 一种针对OLED屏DeMURA数据的压缩方法 |
CN112927640B (zh) * | 2019-12-05 | 2024-01-30 | 敦泰电子股份有限公司 | 局部补偿显示画面亮度不均的资料压缩方法及储存装置 |
CN111223438B (zh) * | 2020-03-11 | 2022-11-04 | Tcl华星光电技术有限公司 | 像素补偿表的压缩方法及装置 |
CN113035152B (zh) * | 2021-03-16 | 2022-06-03 | 武汉天马微电子有限公司 | 显示面板的灰阶亮度调节方法及其装置 |
CN114360449B (zh) * | 2022-01-14 | 2023-08-08 | 苇创微电子(上海)有限公司 | 一种显示器Mura校准的多像素融合压缩方法 |
CN116823675B (zh) * | 2023-08-28 | 2023-12-08 | 禹创半导体(深圳)有限公司 | Oled面板全域压降补偿方法、装置、设备及存储介质 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20070099800A (ko) * | 2006-04-05 | 2007-10-10 | 엘지.필립스 엘시디 주식회사 | 액정표시장치의 구동회로 및 이의 구동방법 |
CN101123074A (zh) * | 2006-08-08 | 2008-02-13 | 奇景光电股份有限公司 | 伽玛对应表的产生方法 |
CN102446479A (zh) * | 2010-10-12 | 2012-05-09 | 群康科技(深圳)有限公司 | 显示器及其驱动方法 |
CN104954797A (zh) * | 2014-03-26 | 2015-09-30 | 三星显示有限公司 | 存储和提取显示面板中的像素参数的系统和方法 |
CN105741762A (zh) * | 2016-03-31 | 2016-07-06 | 深圳市华星光电技术有限公司 | 消除OLED显示面板Mura的方法 |
CN107067445A (zh) * | 2017-04-11 | 2017-08-18 | 惠科股份有限公司 | 压缩算法验证方法及系统、显示装置 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0564110A (ja) * | 1991-09-05 | 1993-03-12 | Hitachi Gazou Joho Syst:Kk | 映像信号補正装置とそれを用いた表示装置 |
JPH0659648A (ja) * | 1992-05-27 | 1994-03-04 | Toshiba Corp | フレームバッファに画像データを格納するマルチメディア表示制御システム |
JP2001307633A (ja) * | 2000-04-20 | 2001-11-02 | Mitsubishi Electric Corp | フラットディスプレイパネル、フラットディスプレイ装置およびフラットディスプレイパネルの製造方法 |
JP4892222B2 (ja) * | 2004-10-29 | 2012-03-07 | キヤノン株式会社 | 画像表示装置およびその補正装置 |
JP2007271940A (ja) * | 2006-03-31 | 2007-10-18 | Toshiba Corp | 映像表示装置及び映像表示方法 |
KR101270167B1 (ko) * | 2006-08-17 | 2013-05-31 | 삼성전자주식회사 | 저복잡도의 이미지 압축 방법 및 장치, 저복잡도의 이미지복원 방법 및 장치 |
KR101025847B1 (ko) * | 2007-01-19 | 2011-03-30 | 삼성전자주식회사 | 이진 영상을 효과적으로 압축하고 복원하는 방법 및 장치 |
JP2009020340A (ja) * | 2007-07-12 | 2009-01-29 | Renesas Technology Corp | 表示装置及び表示装置駆動回路 |
CN101546530B (zh) * | 2008-03-28 | 2011-06-15 | 群康科技(深圳)有限公司 | 伽马查找表存储方法 |
JP5358482B2 (ja) * | 2010-02-24 | 2013-12-04 | 株式会社ルネサスエスピードライバ | 表示駆動回路 |
JP2014078860A (ja) * | 2012-10-11 | 2014-05-01 | Samsung Display Co Ltd | 圧縮器、駆動装置、表示装置および圧縮方法 |
JP6242029B2 (ja) * | 2013-08-12 | 2017-12-06 | インテル・コーポレーション | 低電力画像圧縮及び表示のための技術 |
KR102144329B1 (ko) * | 2013-12-31 | 2020-08-13 | 엘지디스플레이 주식회사 | 유기 발광 디스플레이 장치와 이의 구동 방법 |
CN104464637B (zh) * | 2014-12-29 | 2017-02-22 | 深圳市华星光电技术有限公司 | 一种显示面板的缺陷的灰阶补偿方法及灰阶补偿系统 |
CN104795045B (zh) * | 2015-05-13 | 2017-03-15 | 京东方科技集团股份有限公司 | 一种显示面板的驱动方法、驱动装置及显示器 |
CN105700847B (zh) * | 2016-03-25 | 2019-01-22 | 深圳市华星光电技术有限公司 | Oled显示面板补偿数据的存储方法 |
CN107068050A (zh) * | 2017-06-09 | 2017-08-18 | 深圳市华星光电技术有限公司 | Oled显示面板的补偿表存储方法 |
-
2017
- 2017-11-02 CN CN201711066079.8A patent/CN107799065B/zh active Active
- 2017-11-30 EP EP17930677.4A patent/EP3706106A4/en not_active Withdrawn
- 2017-11-30 JP JP2020519121A patent/JP6913827B2/ja active Active
- 2017-11-30 KR KR1020207015708A patent/KR102316176B1/ko active IP Right Grant
- 2017-11-30 WO PCT/CN2017/113685 patent/WO2019085112A1/zh unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20070099800A (ko) * | 2006-04-05 | 2007-10-10 | 엘지.필립스 엘시디 주식회사 | 액정표시장치의 구동회로 및 이의 구동방법 |
CN101123074A (zh) * | 2006-08-08 | 2008-02-13 | 奇景光电股份有限公司 | 伽玛对应表的产生方法 |
CN102446479A (zh) * | 2010-10-12 | 2012-05-09 | 群康科技(深圳)有限公司 | 显示器及其驱动方法 |
CN104954797A (zh) * | 2014-03-26 | 2015-09-30 | 三星显示有限公司 | 存储和提取显示面板中的像素参数的系统和方法 |
CN105741762A (zh) * | 2016-03-31 | 2016-07-06 | 深圳市华星光电技术有限公司 | 消除OLED显示面板Mura的方法 |
CN107067445A (zh) * | 2017-04-11 | 2017-08-18 | 惠科股份有限公司 | 压缩算法验证方法及系统、显示装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3706106A4 * |
Also Published As
Publication number | Publication date |
---|---|
CN107799065B (zh) | 2019-11-26 |
JP6913827B2 (ja) | 2021-08-04 |
EP3706106A4 (en) | 2021-06-23 |
KR20200073284A (ko) | 2020-06-23 |
CN107799065A (zh) | 2018-03-13 |
KR102316176B1 (ko) | 2021-10-26 |
JP2020536283A (ja) | 2020-12-10 |
EP3706106A1 (en) | 2020-09-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2019085112A1 (zh) | Oled显示面板的灰阶补偿表的压缩方法 | |
US10666292B2 (en) | Compressing method of a grayscale compensation table of an OLED display panel | |
WO2018223485A1 (zh) | Oled显示装置的补偿表压缩方法及解压方法 | |
KR102611867B1 (ko) | 스트레스 보상 시스템 및 방법 | |
CN111787324B (zh) | 率失真优化量化的方法、编码方法及装置 | |
CN109300444B (zh) | 补偿表的压缩方法 | |
US11308873B2 (en) | Redundancy assisted noise control for accumulated iterative compression error | |
WO2020113766A1 (zh) | 补偿表压缩方法 | |
US7860322B2 (en) | Display driving apparatus and method and medium for implementing the display driving method | |
US10803791B2 (en) | Burrows-wheeler based stress profile compression | |
US10609382B2 (en) | Method and apparatus for compressing video data | |
KR102666533B1 (ko) | 표시 장치, 그 구동 방법 및 그 스트레스 보상 시스템 | |
TW202113793A (zh) | 顯示裝置中的應力補償的方法及系統 | |
WO2020244022A1 (zh) | 补偿表压缩方法、显示器制造设备和存储器 | |
US11176908B1 (en) | Method for reducing a size of data required for recording a physical characteristic of an optical device | |
US10681350B2 (en) | Picture encoding and decoding methods and apparatuses, and picture encoding and decoding system | |
US11140393B1 (en) | Display device, encoder with adaptive quantization parameter and image processing method | |
US11955067B2 (en) | Simplified rate control for an additive iterative compression system | |
US10555004B1 (en) | Low frequency compensated encoding | |
US11343512B1 (en) | Systems and methods for compression with constraint on maximum absolute error | |
Choi et al. | Sequential Compression Using Efficient LUT Correlation for Display Defect Compensation | |
KR20220100793A (ko) | 속도 왜곡 적정화 방법 | |
CN118101957A (zh) | 一种高性能渲染子像素图像压缩方法及装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 17930677 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2020519121 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20207015708 Country of ref document: KR Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 2017930677 Country of ref document: EP Effective date: 20200602 |