CN110379370B - RGB-Delta type display panel sub-pixel rendering method based on threshold comparison - Google Patents

RGB-Delta type display panel sub-pixel rendering method based on threshold comparison Download PDF

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CN110379370B
CN110379370B CN201910653503.1A CN201910653503A CN110379370B CN 110379370 B CN110379370 B CN 110379370B CN 201910653503 A CN201910653503 A CN 201910653503A CN 110379370 B CN110379370 B CN 110379370B
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pixel
sub
gray scale
rgb
display panel
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CN110379370A (en
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陈红梅
马奔
张宇航
尹勇生
贾晨
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Hefei University of Technology
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2003—Display of colours
    • 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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2074—Display of intermediate tones using sub-pixels
    • 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
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
    • 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
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0457—Improvement of perceived resolution by subpixel rendering

Abstract

The invention discloses a method for rendering sub-pixels of an RGB-Delta type display panel based on threshold comparison, which comprises the following steps: 1, acquiring an original image and processing the original image to obtain a gray value matrix of RGB sub-pixels; 2 sequentially calculating gray-scale values in the standard pixel units and comparing the gray-scale values with a threshold value; and 3, obtaining the gray-scale value of the sub-pixel in the rendering unit of the RGB-Delta type display panel, forming a three-primary-color pixel and displaying the original image. The invention can overcome the defects of irregular arrangement and insufficient quantity of the sub-pixels of the RGB-Delta type display panel, thereby enabling the RGB-Delta type display panel to normally display images and better restoring image information under the conditions of no color distortion and effective control of color edge effect.

Description

RGB-Delta type display panel sub-pixel rendering method based on threshold comparison
Technical Field
The invention relates to the technical field of image processing and display, in particular to an RGB-Delta type display panel sub-pixel rendering method based on threshold comparison.
Background
With the rapid development of display technologies, Active Matrix Organic Light Emitting Diodes (AMOLEDs) gradually replace Liquid Crystal Displays (LCDs) to become mainstream display panels of various electronic devices by virtue of their characteristics of wide color gamut, high brightness, flexibility, and the like. The liquid crystal display utilizes the backlight source to emit light passively, realizes RGB colors through the optical filter, has simple manufacturing process and lower cost, and adopts a standard RGB sub-pixel arrangement mode, and each pixel can independently display different colors. The RGB sub-pixels of the AMOLED are made of red, green, and blue self-luminous organic materials, and particularly under the current development trend of large size and high resolution of the intelligent display device, it is difficult to manufacture the extremely small and high-density AMOLED, the cost is high, and the design difficulty of the driving circuit is increased.
In the display field of today, the arrangement of sub-pixels of a display panel has been changed. Taking the AMOLED panel as an example, the sub-pixel arrangement order of the display panel is no longer the conventional R, G, B order. Common sub-pixel arrangements include Pentile type and Delta type. Some display manufacturers have display screens with proprietary subpixel arrangement sequences. In such non-conventional RGB display panels, there are various sub-pixel arrangements, which require the research of conversion algorithms from RGB to other pixel structures.
Currently, commercial RGB-Delta type sub-pixel arrangement AMOLEDs are becoming mainstream display panels of electronic devices due to their advantages of wide color gamut, high brightness, and the like. Due to the limitation of the manufacturing process, the arrangement of the sub-pixels of the RGB-Delta structure AMOLED is irregular, the RGB three-primary-color sub-pixels are distributed in a triangular mode, and each pixel unit is composed of two sub-pixels, so that an RGB image cannot be normally displayed. As is known, a full-color image pixel is formed by mixing RGB three colors, and if an R, G, B gray scale value of any pixel of the image is directly mapped to a R, G, B sub-pixel of a corresponding pixel on an RGB-Delta structure panel, the situations of serious loss of image information, obvious color edge effect, poor display effect and the like occur.
Disclosure of Invention
The invention provides an RGB-Delta type display panel sub-pixel rendering method based on threshold comparison to overcome the defects in the prior art, so that image information can be well restored under the conditions that an image is not distorted and the color edge effect is effectively controlled.
The invention adopts the following technical scheme for solving the technical problems:
the invention relates to a method for rendering sub-pixels of an RGB-Delta type display panel based on threshold comparison, which is characterized by comprising the following steps:
step 1, obtaining an original image and processing the original image to obtain a gray value matrix of RGB sub-pixels, wherein the gray value matrix is obtained by the RGB sub-pixelsThe gray value matrix is composed of N standard pixel gray scale units, and any nth standard pixel gray scale unit sequentially comprises: 1 st red sub-pixel
Figure GDA0002592527040000021
1 st green sub-pixel
Figure GDA0002592527040000022
1 st blue sub-pixel
Figure GDA0002592527040000023
Figure GDA0002592527040000023
2 nd red sub-pixel
Figure GDA0002592527040000024
Figure GDA0002592527040000024
2 nd green sub-pixel
Figure GDA0002592527040000025
Figure GDA0002592527040000025
2 nd blue sub-pixel
Figure GDA0002592527040000026
3 rd red sub-pixel
Figure GDA0002592527040000027
3 rd green sub-pixel
Figure GDA0002592527040000028
3 rd blue sub-pixel
Figure GDA0002592527040000029
n＝1,2,…,N；
Step 2, marking any odd line of the RGB-Delta type display panel as YkLet the k-th odd line YkAny rendering unit therein is marked as
Figure GDA00025925270400000210
Let the k-th odd line YkThe nth rendering unit comprises the 1 st red sub-pixel in sequence
Figure GDA00025925270400000211
1 st blue sub-pixel
Figure GDA00025925270400000212
Figure GDA00025925270400000212
2 nd green sub-pixel
Figure GDA00025925270400000213
Figure GDA00025925270400000213
2 nd red sub-pixel
Figure GDA00025925270400000214
3 rd blue sub-pixel
Figure GDA00025925270400000215
3 rd green sub-pixel
Figure GDA00025925270400000216
Step 3, marking any even line of the RGB-Delta type display panel as ZkLet the k even line ZkAny rendering unit therein is marked as
Figure GDA00025925270400000217
Let the k even line ZkThe inner nth rendering unit sequentially comprises the 1 st green sub-pixel
Figure GDA00025925270400000218
1 st blue sub-pixel
Figure GDA00025925270400000219
Figure GDA00025925270400000219
2 nd red sub-pixel
Figure GDA00025925270400000220
Figure GDA00025925270400000220
2 nd green sub-pixel
Figure GDA00025925270400000221
3 rd red sub-pixel
Figure GDA00025925270400000222
3 rd blue sub-pixel
Figure GDA00025925270400000223
Step 4, making the k odd line YkInner n th1 st red sub-image in each rendering unit
Figure GDA00025925270400000224
1 st blue sub-pixel
Figure GDA00025925270400000225
3 rd green sub-pixel
Figure GDA00025925270400000226
Equal to the 1 st red sub-pixel of the nth standard pixel gray scale unit in the gray scale value matrix
Figure GDA00025925270400000227
1 st blue sub-pixel
Figure GDA00025925270400000228
3 rd green sub-pixel
Figure GDA00025925270400000229
The gray scale value of (a);
step 5, calculating the 2 nd green sub-pixel in any jth standard pixel gray scale unit in the kth odd line in the gray scale value matrix
Figure GDA00025925270400000230
And the 1 st green sub-pixel
Figure GDA00025925270400000231
When the difference between the first and second pixels is greater than the set threshold, the 2 nd green sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made to be in the kth rendering unit
Figure GDA00025925270400000232
Is equal to the 1 st green sub-pixel in the gray value matrix
Figure GDA00025925270400000233
The gray scale value of (a); when the difference value is less than or equal to the set threshold value, the 2 nd green sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made
Figure GDA00025925270400000234
Is equal to the gray value matrix
Figure GDA00025925270400000235
The gray scale value of (a);
step 6, calculating the 2 nd red sub-pixel in the jth standard pixel gray scale unit in the kth odd line in the gray scale value matrix
Figure GDA00025925270400000236
And 3 rd red sub-pixel
Figure GDA00025925270400000237
When the difference between the first and second pixels is greater than the set threshold, the 2 nd red sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made to be in the kth rendering unit
Figure GDA00025925270400000238
Is equal to the 3 rd red sub-pixel in the gray value matrix
Figure GDA0002592527040000031
The gray scale value of (a); when the difference value is less than or equal to the set threshold value, the 2 nd red sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made
Figure GDA0002592527040000032
Is equal to the gray value matrix
Figure GDA0002592527040000033
The gray scale value of (a);
step 7, calculating the 2 nd blue sub-pixel in the jth standard pixel gray scale unit in the kth odd line in the gray scale value matrix
Figure GDA0002592527040000034
And 3 rd blue sub-pixel
Figure GDA0002592527040000035
When the difference between the first and second pixels is greater than the set threshold, the 2 nd blue sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is enabled
Figure GDA0002592527040000036
Is equal to the 3 rd blue sub-pixel in the gray value matrix
Figure GDA0002592527040000037
The gray scale value of (a); when the difference value is less than or equal to the set threshold value, the 2 nd blue sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made
Figure GDA0002592527040000038
Is equal to the gray value matrix
Figure GDA0002592527040000039
The gray scale value of (a);
step 8, order the k even line Zk1 st green sub-pixel in inner nth rendering unit
Figure GDA00025925270400000310
3 rd red sub-pixel
Figure GDA00025925270400000311
3 rd blue sub-pixel
Figure GDA00025925270400000312
Equal to the 1 st green sub-pixel of the nth standard pixel gray scale unit in the gray scale value matrix
Figure GDA00025925270400000313
3 rd red sub-pixel
Figure GDA00025925270400000314
3 rd blue sub-pixel
Figure GDA00025925270400000315
The gray scale value of (a);
step 9, calculating the 1 st blue sub-pixel in any jth standard pixel gray scale unit in the kth even line in the gray scale value matrix
Figure GDA00025925270400000316
And 2 nd blue sub-pixel
Figure GDA00025925270400000317
When the difference between the first and second pixels is greater than the set threshold, the 1 st blue sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is enabled
Figure GDA00025925270400000318
Is equal to the 1 st blue sub-pixel in the gray value matrix
Figure GDA00025925270400000319
The gray scale value of (a); when the difference value is less than or equal to the set threshold value, the 1 st blue sub-pixel B in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is enabled1 jIs equal to the gray value matrix
Figure GDA00025925270400000320
The gray scale value of (a);
step 10, calculating the 1 st red sub-pixel in the jth standard pixel gray scale unit in the kth even line in the gray scale value matrix
Figure GDA00025925270400000321
And 2 nd red sub-pixel
Figure GDA00025925270400000322
When the difference between the first and second pixels is greater than the set threshold, the 2 nd red sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made to be in the kth rendering unit
Figure GDA00025925270400000323
Is equal to the 1 st red sub-pixel in the gray value matrix
Figure GDA00025925270400000324
The gray scale value of (a); when the difference value is less than or equal to the set threshold value, the 2 nd red sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made
Figure GDA00025925270400000325
Is equal to the gray value matrix
Figure GDA00025925270400000326
The gray scale value of (a);
step 11, calculating the 2 nd green sub-pixel in any jth standard pixel gray scale unit in the kth even line in the gray scale value matrix
Figure GDA0002592527040000041
And the 3 rd green sub-pixel
Figure GDA0002592527040000042
When the difference between the first and second pixels is greater than the set threshold, the 2 nd green sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made to be in the kth rendering unit
Figure GDA0002592527040000043
Is equal to the 1 st green sub-pixel in the gray value matrix
Figure GDA0002592527040000044
The gray scale value of (a); when the difference value is less than or equal to the set threshold value, the 2 nd green sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made
Figure GDA0002592527040000045
Is equal to the gray value matrix
Figure GDA0002592527040000046
The gray scale value of (1).
Compared with the prior art, the invention has the beneficial effects and advantages that:
1. the invention overcomes the defects of irregular arrangement and insufficient quantity of the sub-pixels of the RGB-Delta type display panel through the sub-pixel rendering method, thereby enabling the RGB-Delta type display panel to normally display images and further better restoring image information under the conditions of no color distortion and effective control of color edge effect.
2. According to the method, the common mode of the sub-pixels is determined by researching and analyzing the characteristics of the arrangement mode of the sub-pixels of the RGB-Delta structure AMOLED, the optimal rendering weight coefficient is calculated in a threshold value comparison-based mode, the gray-scale value of the common sub-pixels is obtained by summing the gray-scale value weights of the corresponding atomic pixels, the image is enabled not to be distorted while the panel is enabled to normally display the image, therefore, the high-frequency detail part in the original image can be effectively displayed, and the color edge effect of the image can be effectively reduced.
Drawings
FIG. 1 is a schematic diagram of a sub-pixel arrangement of a standard RGB display panel;
FIG. 2 is a schematic diagram of an arrangement structure of sub-pixels of an AMOLED adopting an RGB-Delta type;
FIG. 3 is a diagram comparing a standard RGB pixel cell with an odd row rendering cell of an RGB-Delta type panel;
FIG. 4 is a comparison of a standard RGB pixel cell with an even line rendering cell of an RGB-Delta type panel.
Detailed Description
In the embodiment, referring to fig. 1, in the standard RGB sub-pixel arrangement structure, the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B are sequentially arranged, and the sub-pixel arrangement order of each row is the same.
Referring to fig. 2, in the RGB-Delta type subpixel arrangement structure, a red subpixel R, a green subpixel G, and a blue subpixel B are repeatedly arranged in a triangle. In the RGB-Delta sub-pixel arrangement structure, the arrangement of odd-numbered lines and even-numbered lines is different, and the repeat pixels in the odd-numbered lines are RB, GR, and BG, and the repeat pixels in the even-numbered lines are GB, RG, and BR.
Referring to fig. 3, in the RGB-Delta type display panel sub-pixel rendering method based on threshold comparison, the sub-pixel rendering algorithm in the odd-numbered line rendering unit is performed according to the following steps:
step 1, acquiring an original image and processing the original image to obtain a gray value matrix of RGB (red, green and blue) sub-pixels, wherein the gray value matrix is composed of N standard pixel gray scale units, and any nth standard pixel gray scale unit sequentially comprises: 1 st red sub-pixel
Figure GDA0002592527040000047
1 st green sub-pixel
Figure GDA0002592527040000051
1 st blue sub-pixel
Figure GDA0002592527040000052
Figure GDA0002592527040000052
2 nd red sub-pixel
Figure GDA0002592527040000053
Figure GDA0002592527040000053
2 nd green sub-pixel
Figure GDA0002592527040000054
Figure GDA0002592527040000054
2 nd blue sub-pixel
Figure GDA0002592527040000055
3 rd red sub-pixel
Figure GDA0002592527040000056
3 rd green sub-pixel
Figure GDA0002592527040000057
3 rd blue sub-pixel
Figure GDA0002592527040000058
n＝1,2,…,N；
Step 2, marking any odd line of the RGB-Delta type display panel as YkLet the k-th odd line YkAny rendering unit therein is marked as
Figure GDA0002592527040000059
Let the k-th odd line YkThe nth rendering unit comprises the 1 st red sub-pixel in sequence
Figure GDA00025925270400000510
1 st blue sub-pixel
Figure GDA00025925270400000511
Figure GDA00025925270400000511
2 nd green sub-pixel
Figure GDA00025925270400000512
Figure GDA00025925270400000512
2 nd red sub-pixel
Figure GDA00025925270400000513
3 rd blue sub-pixel
Figure GDA00025925270400000514
3 rd green sub-pixel
Figure GDA00025925270400000515
Step 3, marking any even line of the RGB-Delta type display panel as ZkLet the k even line ZkAny rendering unit therein is marked as
Figure GDA00025925270400000516
Let the k even line ZkThe inner nth rendering unit sequentially comprises the 1 st green sub-pixel
Figure GDA00025925270400000517
1 st blue sub-pixel
Figure GDA00025925270400000518
Figure GDA00025925270400000518
2 nd red sub-pixel
Figure GDA00025925270400000519
Figure GDA00025925270400000519
2 nd green sub-pixel
Figure GDA00025925270400000520
3 rd red sub-pixel
Figure GDA00025925270400000521
3 rd blue sub-pixel
Figure GDA00025925270400000522
Step 4, making the k odd line Yk1 st red sub-image in the nth rendering unit
Figure GDA00025925270400000523
1 st blue sub-pixel
Figure GDA00025925270400000524
3 rd green sub-pixel
Figure GDA00025925270400000525
Equal to the 1 st red sub-pixel of the nth standard pixel gray scale unit in the gray scale value matrix
Figure GDA00025925270400000526
1 st blue sub-pixel
Figure GDA00025925270400000527
3 rd green sub-pixel
Figure GDA00025925270400000528
The gray scale value of (a);
step 5, calculating the 2 nd green sub-pixel in any jth standard pixel gray scale unit in the kth odd line in the gray scale value matrix
Figure GDA00025925270400000529
And the 1 st green sub-pixel
Figure GDA00025925270400000530
When the difference between the first and second pixels is greater than the set threshold, the 2 nd green sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made to be in the kth rendering unit
Figure GDA00025925270400000531
Is equal to the 1 st green sub-pixel in the gray value matrix
Figure GDA00025925270400000532
The gray scale value of (a); when the difference value of the twoWhen the pixel value is less than or equal to the set threshold value, the 2 nd green sub-pixel in the jth rendering unit in the kth odd-numbered line of the RGB-Delta type display panel is controlled
Figure GDA00025925270400000533
Is equal to the gray value matrix
Figure GDA00025925270400000534
The gray scale value of (a); the dashed box portion of reference numeral 31 in fig. 3 is obtained. G2New gray scale value of sub-pixel and R1、B1Constituting the complete three primary color pixel.
Step 6, calculating the 2 nd red sub-pixel in the jth standard pixel gray scale unit in the kth odd line in the gray scale value matrix
Figure GDA00025925270400000535
And 3 rd red sub-pixel
Figure GDA00025925270400000536
When the difference between the first and second pixels is greater than the set threshold, the 2 nd red sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made to be in the kth rendering unit
Figure GDA00025925270400000537
Is equal to the 3 rd red sub-pixel in the gray value matrix
Figure GDA00025925270400000538
The gray scale value of (a); when the difference value is less than or equal to the set threshold value, the 2 nd red sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made
Figure GDA0002592527040000061
Is equal to the gray value matrix
Figure GDA0002592527040000062
The gray scale value of (a);
step 7, calculating the j standard pixel gray scale unit in the k odd line in the gray scale value matrixMiddle 2 nd blue sub-pixel
Figure GDA0002592527040000063
And 3 rd blue sub-pixel
Figure GDA0002592527040000064
When the difference between the first and second pixels is greater than the set threshold, the 2 nd blue sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is enabled
Figure GDA0002592527040000065
Is equal to the 3 rd blue sub-pixel in the gray value matrix
Figure GDA0002592527040000066
The gray scale value of (a); when the difference value is less than or equal to the set threshold value, the 2 nd blue sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made
Figure GDA0002592527040000067
Is equal to the gray value matrix
Figure GDA0002592527040000068
The gray scale value of (a); after steps 6 and 7, the dashed-line frame part of reference numeral 32 and the dashed-line frame part of reference numeral 33 in fig. 3 are obtained. G2New gray scale value of sub-pixel and R2、B3Constituting the complete three primary color pixel. G3Sub-pixel gray scale values and R2、B3Constituting the complete three primary color pixel.
Referring to fig. 4, the sub-pixel rendering method in the even-numbered line rendering unit continues according to the following steps:
step 8, order the k even line Zk1 st green sub-pixel in inner nth rendering unit
Figure GDA0002592527040000069
3 rd red sub-pixel
Figure GDA00025925270400000610
3 rd blue sub-pixel
Figure GDA00025925270400000611
Equal to the 1 st green sub-pixel of the nth standard pixel gray scale unit in the gray scale value matrix
Figure GDA00025925270400000612
3 rd red sub-pixel
Figure GDA00025925270400000613
3 rd blue sub-pixel
Figure GDA00025925270400000614
The gray scale value of (a);
step 9, calculating the 1 st blue sub-pixel in any jth standard pixel gray scale unit in the kth even line in the gray scale value matrix
Figure GDA00025925270400000615
And 2 nd blue sub-pixel
Figure GDA00025925270400000616
When the difference between the first and second pixels is greater than the set threshold, the 1 st blue sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is enabled
Figure GDA00025925270400000617
Is equal to the 1 st blue sub-pixel in the gray value matrix
Figure GDA00025925270400000618
The gray scale value of (a); when the difference value is less than or equal to the set threshold value, the 1 st blue sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made
Figure GDA00025925270400000619
Is equal to the gray value matrix
Figure GDA00025925270400000620
The gray scale value of (a); to obtainThe reference numeral 41 in fig. 4 is a dashed frame portion. B is1New gray scale value of sub-pixel and R2、B1Constituting the complete three primary color pixel.
Step 10, calculating the 1 st red sub-pixel in the jth standard pixel gray scale unit in the kth even line in the gray scale value matrix
Figure GDA00025925270400000621
And 2 nd red sub-pixel
Figure GDA00025925270400000622
When the difference between the first and second pixels is greater than the set threshold, the 2 nd red sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made to be in the kth rendering unit
Figure GDA00025925270400000623
Is equal to the 1 st red sub-pixel in the gray value matrix
Figure GDA00025925270400000624
The gray scale value of (a); when the difference value is less than or equal to the set threshold value, the 2 nd red sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made
Figure GDA0002592527040000071
Is equal to the gray value matrix
Figure GDA0002592527040000072
The gray scale value of (a);
step 11, calculating the 2 nd green sub-pixel in any jth standard pixel gray scale unit in the kth even line in the gray scale value matrix
Figure GDA0002592527040000073
And the 3 rd green sub-pixel
Figure GDA0002592527040000074
When the difference between the first rendering unit and the second rendering unit is larger than the set threshold value, the 2 nd green color in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is enabled to be inSub-pixel
Figure GDA0002592527040000075
Is equal to the 1 st green sub-pixel in the gray value matrix
Figure GDA0002592527040000076
The gray scale value of (a); when the difference value is less than or equal to the set threshold value, the 2 nd green sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made
Figure GDA0002592527040000077
Is equal to the gray value matrix
Figure GDA0002592527040000078
The gray scale value of (a); after the steps 10 and 11, the dashed-line frame portion 42 and the dashed-line frame portion 43 in fig. 4 are obtained. G2New gray scale value of sub-pixel and R2、B3Constituting the complete three primary color pixel. G3Sub-pixel gray scale values and R2、B3Constituting the complete three primary color pixel.
According to the embodiment of the invention, an AMOLED sub-pixel rendering algorithm suitable for an RGB-Delta arrangement structure can be realized. The invention can better restore the image information under the condition that the image is not distorted and the color edge effect is effectively controlled.

Claims (1)

1. A RGB-Delta type display panel sub-pixel rendering method based on threshold comparison is characterized by comprising the following steps:
step 1, acquiring an original image and processing the original image to obtain a gray value matrix of RGB (red, green and blue) sub-pixels, wherein the gray value matrix is composed of N standard pixel gray scale units, and any nth standard pixel gray scale unit sequentially comprises: 1 st red sub-pixel
Figure FDA0002592527030000011
1 st green sub-pixel
Figure FDA0002592527030000012
1 st blue sub-pixel
Figure FDA0002592527030000013
2 nd red sub-pixel
Figure FDA0002592527030000014
2 nd green sub-pixel
Figure FDA0002592527030000015
2 nd blue sub-pixel
Figure FDA0002592527030000016
3 rd red sub-pixel
Figure FDA0002592527030000017
3 rd green sub-pixel
Figure FDA0002592527030000018
3 rd blue sub-pixel
Figure FDA0002592527030000019
Figure FDA00025925270300000110
Step 2, marking any odd line of the RGB-Delta type display panel as YkLet the k-th odd line YkAny rendering unit therein is marked as
Figure FDA00025925270300000111
Let the k-th odd line YkThe nth rendering unit comprises the 1 st red sub-pixel in sequence
Figure FDA00025925270300000112
1 st blue sub-pixel
Figure FDA00025925270300000113
2 nd greenSub-pixel
Figure FDA00025925270300000114
2 nd red sub-pixel
Figure FDA00025925270300000115
3 rd blue sub-pixel
Figure FDA00025925270300000116
3 rd green sub-pixel
Figure FDA00025925270300000117
Step 3, marking any even line of the RGB-Delta type display panel as ZkLet the k even line ZkAny rendering unit therein is marked as
Figure FDA00025925270300000118
Let the k even line ZkThe inner nth rendering unit sequentially comprises the 1 st green sub-pixel
Figure FDA00025925270300000119
1 st blue sub-pixel
Figure FDA00025925270300000120
2 nd red sub-pixel
Figure FDA00025925270300000121
2 nd green sub-pixel
Figure FDA00025925270300000122
3 rd red sub-pixel
Figure FDA00025925270300000123
3 rd blue sub-pixel
Figure FDA00025925270300000124
Step 4,Let the k-th odd line Yk1 st red sub-image in the nth rendering unit
Figure FDA00025925270300000125
1 st blue sub-pixel
Figure FDA00025925270300000126
3 rd green sub-pixel
Figure FDA00025925270300000127
Equal to the 1 st red sub-pixel of the nth standard pixel gray scale unit in the gray scale value matrix
Figure FDA00025925270300000128
1 st blue sub-pixel
Figure FDA00025925270300000129
3 rd green sub-pixel
Figure FDA00025925270300000130
The gray scale value of (a);
step 5, calculating the 2 nd green sub-pixel in any jth standard pixel gray scale unit in the kth odd line in the gray scale value matrix
Figure FDA00025925270300000131
And the 1 st green sub-pixel
Figure FDA00025925270300000132
When the difference between the first and second pixels is greater than the set threshold, the 2 nd green sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made to be in the kth rendering unit
Figure FDA00025925270300000133
Is equal to the 1 st green sub-pixel in the gray value matrix
Figure FDA00025925270300000134
The gray scale value of (a); when the difference value is less than or equal to the set threshold value, the 2 nd green sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made
Figure FDA00025925270300000135
Is equal to the gray value matrix
Figure FDA00025925270300000136
The gray scale value of (a);
step 6, calculating the 2 nd red sub-pixel in the jth standard pixel gray scale unit in the kth odd line in the gray scale value matrix
Figure FDA00025925270300000137
And 3 rd red sub-pixel
Figure FDA00025925270300000138
When the difference between the first and second pixels is greater than the set threshold, the 2 nd red sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made to be in the kth rendering unit
Figure FDA0002592527030000021
Is equal to the 3 rd red sub-pixel in the gray value matrix
Figure FDA0002592527030000022
The gray scale value of (a); when the difference value is less than or equal to the set threshold value, the 2 nd red sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made
Figure FDA0002592527030000023
Is equal to the gray value matrix
Figure FDA0002592527030000024
The gray scale value of (a);
step 7, calculating the 2 nd blue sub-gray scale unit in the jth standard pixel gray scale unit in the kth odd line in the gray scale value matrixPixel
Figure FDA0002592527030000025
And 3 rd blue sub-pixel
Figure FDA0002592527030000026
When the difference between the first and second pixels is greater than the set threshold, the 2 nd blue sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is enabled
Figure FDA0002592527030000027
Is equal to the 3 rd blue sub-pixel in the gray value matrix
Figure FDA0002592527030000028
The gray scale value of (a); when the difference value is less than or equal to the set threshold value, the 2 nd blue sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made
Figure FDA0002592527030000029
Is equal to the gray value matrix
Figure FDA00025925270300000210
The gray scale value of (a);
step 8, order the k even line Zk1 st green sub-pixel in inner nth rendering unit
Figure FDA00025925270300000211
3 rd red sub-pixel
Figure FDA00025925270300000212
3 rd blue sub-pixel
Figure FDA00025925270300000213
Equal to the 1 st green sub-pixel of the nth standard pixel gray scale unit in the gray scale value matrix
Figure FDA00025925270300000214
3 rd red sub-pixel
Figure FDA00025925270300000215
3 rd blue sub-pixel
Figure FDA00025925270300000216
The gray scale value of (a);
step 9, calculating the 1 st blue sub-pixel in any jth standard pixel gray scale unit in the kth even line in the gray scale value matrix
Figure FDA00025925270300000217
And 2 nd blue sub-pixel
Figure FDA00025925270300000218
When the difference between the first and second pixels is greater than the set threshold, the 1 st blue sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is enabled
Figure FDA00025925270300000219
Is equal to the 1 st blue sub-pixel in the gray value matrix
Figure FDA00025925270300000220
The gray scale value of (a); when the difference value is less than or equal to the set threshold value, the 1 st blue sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made
Figure FDA00025925270300000221
Is equal to the gray value matrix
Figure FDA00025925270300000222
The gray scale value of (a);
step 10, calculating the 1 st red sub-pixel in the jth standard pixel gray scale unit in the kth even line in the gray scale value matrix
Figure FDA00025925270300000223
And 2 nd red sub-pixel
Figure FDA00025925270300000224
When the difference between the first and second pixels is greater than the set threshold, the 2 nd red sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made to be in the kth rendering unit
Figure FDA00025925270300000225
Is equal to the 1 st red sub-pixel in the gray value matrix
Figure FDA00025925270300000226
The gray scale value of (a); when the difference value is less than or equal to the set threshold value, the 2 nd red sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made
Figure FDA00025925270300000227
Is equal to the gray value matrix
Figure FDA00025925270300000228
The gray scale value of (a);
step 11, calculating the 2 nd green sub-pixel in any jth standard pixel gray scale unit in the kth even line in the gray scale value matrix
Figure FDA0002592527030000031
And the 3 rd green sub-pixel
Figure FDA0002592527030000032
When the difference between the first and second pixels is greater than the set threshold, the 2 nd green sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made to be in the kth rendering unit
Figure FDA0002592527030000033
Is equal to the 1 st green sub-pixel in the gray value matrix
Figure FDA0002592527030000034
The gray scale value of (a); when the difference value is less than or equal to the set threshold value, the 2 nd green sub-pixel in the jth rendering unit in the kth odd line of the RGB-Delta type display panel is made
Figure FDA0002592527030000035
Is equal to the gray value matrix
Figure FDA0002592527030000036
The gray scale value of (1).
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