CN105096755A - Display device making use of sub-pixel rendering method and sub-pixel rendering method - Google Patents

Display device making use of sub-pixel rendering method and sub-pixel rendering method Download PDF

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CN105096755A
CN105096755A CN201510541218.2A CN201510541218A CN105096755A CN 105096755 A CN105096755 A CN 105096755A CN 201510541218 A CN201510541218 A CN 201510541218A CN 105096755 A CN105096755 A CN 105096755A
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pixel
sub
pattern
pixels
image data
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CN105096755B (en
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张沼栋
许丽佳
何春燕
方丽婷
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Tianma Microelectronics Co Ltd
Xiamen Tianma Microelectronics Co Ltd
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Tianma Microelectronics Co Ltd
Xiamen Tianma Microelectronics Co Ltd
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Abstract

The invention discloses a display device making use of a sub-pixel rendering method and the sub-pixel rendering method. The display device comprises an information processing module and a display module, wherein the information processing module comprises a data receiving module which is used for receiving image data of a first pattern, a data output module for outputting image data of a second pattern, and a data processing module for mapping the first pattern to the second pattern by virtue of the sub-pixel rendering method. The second image is displayed by the display module, wherein each pixel of the first pattern corresponds to a virtual pixel of the second pattern; two adjacent virtual pixels of the second pattern share one or more sub-pixels; the data processing module is used for compensating the image data of the sub-pixel shared by the second pattern by virtue of a compensating coefficient; and the compensating coefficient is set in accordance with the image data of two adjacent pixels of the first pattern corresponding to the sub-pixel shared by the second pattern or is set as a constant.

Description

Display device using sub-pixel rendering method and sub-pixel rendering method thereof
Technical Field
The present invention relates to the field of display, and more particularly, to the field of liquid crystal displays and organic light emitting diode displays, and more particularly, to a display device using a subpixel rendering method and the subpixel rendering method.
Background
Resolution is an important indicator in the display field. Conventional liquid crystal displays and organic light emitting diode displays include pixels arranged in various manners, each pixel including a plurality of sub-pixels arranged in a certain order, such as red (R), green (G), and blue (B) sub-pixels, each pixel displaying a different color through a different sub-pixel combination. The resolution of a conventional display depends on the pixel arrangement density and fundamentally on the arrangement density of the sub-pixels. However, as the size of the sub-pixel is made smaller, a series of technical difficulties such as low aperture ratio, severe manufacturing process, etc. are followed, resulting in a low yield of high resolution products and a corresponding high production cost.
The subpixel rendering (SPR) technique can increase the sensory resolution without changing the subpixel density or decrease the subpixel density without changing the sensory resolution, and thus is a solution to the above-mentioned problem. Accordingly, various display devices using the subpixel rendering method and the subpixel rendering method thereof have been developed.
Disclosure of Invention
One aspect of the present invention provides a display apparatus using a subpixel rendering method. The display device comprises an information processing module and a display module. The information processing module includes: a data receiving module for receiving image data of a first pattern; a data output module for outputting image data of the second pattern; and a data processing module for mapping the first pattern to the second pattern by a sub-pixel rendering method. The display module displays the second pattern. Each pixel of the first pattern corresponds to one virtual pixel of the second pattern, two adjacent virtual pixels of the second pattern share one or more sub-pixels, the data processing module compensates the image data of the shared sub-pixels of the second pattern through a compensation coefficient, and the compensation coefficient is set or set to be constant according to the image data of the two adjacent pixels of the first pattern corresponding to the shared sub-pixels of the second pattern.
In one exemplary embodiment of the first aspect of the present invention, each pixel of the first pattern includes three sub-pixels different in color from each other; each virtual pixel of the second pattern comprises four sub-pixels, namely a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel, wherein the colors of the first sub-pixel, the second sub-pixel and the third sub-pixel are different from each other, the color of the fourth sub-pixel is the same as that of the first sub-pixel, and two adjacent virtual pixels of the second pattern share two sub-pixels.
In one exemplary embodiment of the first aspect of the present invention, the sub-pixels of the second pattern are arranged in the order of RGB or BGR in the first direction.
In one exemplary embodiment of the first aspect of the present invention, a length of each sub-pixel of the second pattern in the first direction is 1.5 times a length of the sub-pixel of the first pattern in the first direction.
In an exemplary embodiment of the first aspect of the invention, the image data represents transmittance (e.g. for an LCD) or brightness (e.g. for an OLED).
In one exemplary embodiment of the first aspect of the present invention, the display module includes at least one of an LCD panel and an OLED panel.
In one exemplary embodiment of the first aspect of the present invention, the nth pixel of the first pattern is adjacent to the (n + 1) th pixel, and the nth pixel includes three sub-pixels x1、x2、x3The (n + 1) th pixel includes three sub-pixels x4、x5、x6(ii) a The nth 'virtual pixel of the second pattern is adjacent to the (n' + 1) th virtual pixel, where n and n 'are positive integers, and the nth' virtual pixel includes four sub-pixels y1、y2、y3、y4The n' +1 th virtual pixel includes four sub-pixels y3、y4、y5、y6Wherein the sub-pixel y1、y2、y3Different colors, sub-pixel y1And y4Same color, sub-pixel y2And y5Same color, sub-pixel y3And y6Same color, sub-pixel x of the first pattern1And sub-pixel y of the second pattern1Same color, sub-pixel x of the first pattern2And sub-pixel y of the second pattern2Same color, sub-pixel x of the first pattern3And sub-pixel y of the second pattern3The colors are the same; the sub-pixel y is shared by the nth 'virtual pixel and the (n' + 1) th virtual pixel3And a sub-pixel y4(ii) a Nth pixel pair of the first patternThe nth' dummy pixel of the second pattern; the (n + 1) th pixel of the first pattern corresponds to the (n' + 1) th virtual pixel of the second pattern; wherein, the sub-pixel y3The compensation of the image data of (1) is performed according to the following equation:
L(y3)=M(y3)[L(x3)×p×f(x6)+L(x6)×q×f(x3)]
sub-pixel y4The compensation of the image data of (1) is performed according to the following equation:
L(y4)=M(y4)[L(x1)×q×f(x4)+L(x4)×p×f(x1)]
L(xi) Or L (y)j) Respectively represent sub-pixels xiOr sub-pixel yjThe coefficients p and q are image data distribution coefficients; m (y)j) Is used for adjusting the sub-pixel yjThe letters i and j represent positive integers; and a function f (x)i) Is a compensation factor, according to the sub-pixel xiThe image data of (1) is set.
In an exemplary embodiment of the first aspect of the present invention, the image data allocation coefficients p > q and p + q ≧ 1.
In an exemplary embodiment of the first aspect of the invention, the compensation factor 0 ≦ f (x)i)≤1。
In one exemplary embodiment of the first aspect of the present invention, the gray scale adjustment function M (y)i) Is set as M (y)i)=1。
In an exemplary embodiment of the first aspect of the invention, f ( x i ) = 1 - p + q - 1 p + q L ( x i ) .
another aspect of the present invention provides a subpixel rendering method, including: acquiring image data from the first pattern; and mapping the first pattern to the second pattern; each pixel of the first pattern corresponds to one virtual pixel of the second pattern, two adjacent virtual pixels of the second pattern share one or more sub-pixels, the data processing module compensates the image data of the shared sub-pixels of the second pattern through a compensation coefficient, and the compensation coefficient is set or set to be constant according to the image data of the two adjacent pixels of the first pattern corresponding to the shared sub-pixels of the second pattern.
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Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of a pixel matrix made up of sub-pixels arranged in accordance with conventional RGB;
FIG. 2 is a display device according to an exemplary embodiment of the present invention;
FIG. 3 is a schematic illustration of mapping from a first pattern to a second pattern according to an exemplary embodiment of the invention;
FIG. 4 is a schematic illustration of mapping from a first pattern to a second pattern according to another exemplary embodiment of the invention; and
FIG. 5 is a diagram illustrating the adjustment effect of a gray level adjustment function according to an exemplary embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the related invention are shown in the drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Fig. 1 schematically shows a pixel matrix 100 of a conventional RGB arrangement. In this pixel matrix 100, each pixel 110 includes three sub-pixels 111, 112, 113 of R, G, B three colors, respectively, arranged in a first direction (e.g., a horizontal direction in this example), each having a length a in a second direction (e.g., a vertical direction in this example) and a/3 in the first direction, so that each pixel has a square shape. Image information such as pictures stored in a storage medium (e.g., a hard disk, a flash memory, an optical disk, etc.) or an electronic device (e.g., a computer, a tablet computer, a mobile phone, etc.) including the storage medium is generally stored in the form of a conventional RGB pattern, for example, an image is decomposed into M × N pixels arranged in a matrix form, and the color of the image at each pixel is recorded by a set of image data including gradation values of three subpixels of RGB. If the picture is restored and displayed on a conventional RGB-arranged display having a pixel matrix with the same number of rows and columns, the corresponding image data is simply converted into the corresponding transmittance (for LCD displays) or luminance value (for OLED displays). The mapping relationship from the conventional RGB pattern to the SPR pattern is relatively complex compared to the mapping from the conventional RGB pattern to the conventional RGB arrangement.
Fig. 2 exemplarily shows a display apparatus 200 using a sub-pixel rendering method according to an embodiment of the present invention. The display device 200 includes an information processing module 210 and a display module 220. The information processing module 210 includes: a data receiving module 211 for receiving image data of a first pattern (for example, but not limited to, a conventional RGB pattern); a data output module 213 for outputting image data of a second pattern (e.g., without limitation, an SPR pattern); and a data processing module 212 for mapping the first pattern to the second pattern by a sub-pixel rendering method. The display module 220 for displaying the second pattern includes an LCD panel or an OLED panel, or both the LCD panel and the OLED panel. Each pixel of the first pattern corresponds to one virtual pixel of the second pattern, two adjacent virtual pixels of the second pattern share one or more sub-pixels, the data processing module compensates the image data of the shared sub-pixels of the second pattern through a compensation coefficient, and the compensation coefficient is set or set to be constant according to the image data of the two adjacent pixels of the first pattern corresponding to the shared sub-pixels of the second pattern.
Fig. 3 exemplarily shows mapping from a first pattern (e.g., a conventional RGB pattern 310 in the present embodiment) to a second pattern (e.g., an SPR pattern 320 in the present embodiment) according to an embodiment of the present invention. The length of each sub-pixel of SPR pattern 320 in the first direction may be 1.5 times the length of each sub-pixel of conventional RGB pattern 310 in the first direction. In the present embodiment, the first direction is, for example, but not limited to, a horizontal direction. The pixels 311 and 312 are the nth pixel and the (n + 1) th pixel in a certain line of the conventional RGB pattern 310.
Pixel 311 includes sub-pixels 3111, 3112 and 3113, respectively denoted as x1、x2、x3(ii) a Pixel 312 includes sub-pixels 3121, 3122, and 3123, respectively designated as x4、x5、x6. The sub-pixels of the conventional RGB pattern 310 may be cyclically arranged in the order of RGB or BGR along the first direction. For example, sub-pixel 3121 is the same color as sub-pixel 3111, sub-pixel 3122 is the same color as sub-pixel 3112, and sub-pixel 3123 is the same color as sub-pixel 3113.
Dummy pixel 321 and dummy pixel 322 are the n 'th dummy pixel and the n' +1 th dummy pixel of a certain line of SPR pattern 320, which correspond to pixel 311 and pixel 312 of conventional RGB pattern 310, respectively. The dummy pixel 321 includes a first subpixel 3211, a second subpixel 3212, a third subpixel 3213, and a fourth subpixel 3214, which are respectively denoted by y1、y2、y3、y4(ii) a The virtual pixel 322 includes a first subpixel 3213, a second subpixel 3214, a third subpixel 3215, and a fourth subpixel 3216, which are respectively denoted as y3、y4、y5、y6. It should be understood that although only two pixels 311 and 312 and two virtual pixels 321 and 322 are shown in FIG. 3, these pixels and virtual pixels represent only a portion of the conventional RGB pattern 310 and the corresponding SPR pattern 320, respectively, and the number of rows and columns of the conventional RGB pattern 310 and SPR image 320 is not so limited. In this embodiment, the subpixel 3213 and subpixel 3214 are shared by the dummy pixel n 'and dummy pixel n' +1, and the subpixels of the SPR pattern 320 are arranged in the first direction in a cyclic manner in the order of RGB or BGR. For example, subpixel 3214 is the same color as subpixel 3211, subpixel 3215 is the same color as subpixel 3212, and subpixel 3216 is the same color as subpixel 3213. In the present embodiment, as shown in fig. 3, for example, but not limited thereto, the sub-pixel 3211 has the same color as the sub-pixel 3111, the sub-pixel 3212 has the same color as the sub-pixel 3112, and the sub-pixel 3213 has the same color as the sub-pixel 3113.
The dashed arrows in fig. 3 schematically indicate the mapping relationship of the image data. Since the sub-pixel 3213 and the sub-pixel 3214 are shared by the virtual pixel n 'and the virtual pixel n' +1, during the mapping from the conventional RGB pattern 310 to the SPR pattern 320, the sub-pixel 3213 and the sub-pixel 3214 contain both the image data mapped by the pixel 311 and the pixel 312 of the conventional RGB pattern 310. In addition, since the virtual pixel 321 includes two subpixels 3211 and 3214 with the same color, the image data of the subpixel 3111 is mapped to the two subpixels 3211 and 3214 simultaneously in the mapping process from the pixel 311 to the virtual pixel 321. The case of the virtual pixel 322 is similar to the virtual pixel 321. From the above description, the image data of the sub-pixels 3213 and 3214 may be respectively given by:
L(y3)=[L(x3)×p+L(x6)×q]
L(y4)=[L(x1)×q+L(x4)×p]
L(xi) Or L (y)j) Respectively represent sub-pixels xiOr sub-pixel yjThe coefficients p and q are image data allocation coefficients, and the letters i and j represent positive integers. It should be understood that although only the formulas for the image data settings for sub-pixels 3213 and 3214 are given here, the image data settings for each sub-pixel of SPR pattern 320 may be made by similar formulas since each sub-pixel of SPR pattern 320 is shared regardless of boundary.
Fig. 4 exemplarily shows mapping from a first pattern (e.g., a conventional RGB pattern 410 in the present embodiment) to a second pattern (e.g., an SPR pattern 420 in the present embodiment) according to another embodiment of the present invention. The length of each sub-pixel of SPR pattern 420 in the first direction may be 1.5 times the length of each sub-pixel of conventional RGB pattern 410 in the first direction. In the present embodiment, the first direction is, for example, but not limited to, a horizontal direction. The pixels 411 and 412 are the nth pixel and the (n + 1) th pixel of a row in the conventional RGB pattern 410. Pixel 411 includes sub-pixels 4111, 4112, and 4113, each denoted as x1、x2、x3(ii) a Pixel 412 includes subpixels 4121, 4122, 4123, respectively designated as x4、x5、x6. The sub-pixels of the conventional RGB pattern 410 may be arranged in a cyclic order of RGB or BGR along the first direction. For example, subpixel 4121 is the same color as subpixel 4111, subpixel 4122 is the same color as subpixel 4112, and subpixel 4123 is the same color as subpixel 4113.
Dummy pixel 421 and dummy pixel 422 are the nth 'and nth' +1 dummy pixels of SPR pattern 420, which correspond to pixel 411 and pixel 412 of conventional RGB pattern 410, respectively. Deficiency of QiThe pseudo pixel 421 includes a first sub-pixel 4211, a second sub-pixel 4212, a third sub-pixel 4213 and a fourth sub-pixel 4214, which are respectively denoted as y1、y2、y3、y4(ii) a The dummy pixel 422 includes a first sub-pixel 4213, a second sub-pixel 4214, a third sub-pixel 4215 and a fourth sub-pixel 4216, which are respectively denoted as y3、y4、y5、y6. It should be understood that although only two pixels 411 and 412 and two virtual pixels 421 and 422 are shown in FIG. 4, these pixels and virtual pixels represent only a portion of conventional RGB pattern 410 and corresponding SPR pattern 420, respectively, and the number of rows and columns of conventional RGB pattern 410 and SPR image 420 is not so limited. In the present embodiment, the subpixel 4213 and the subpixel 4214 are shared by the virtual pixel n 'and the virtual pixel n' +1, and the subpixels of the SPR pattern 420 are arranged cyclically in the first direction in the order of RGB or BGR. For example, subpixel 4214 is the same color as subpixel 4211, subpixel 4215 is the same color as subpixel 4212, and subpixel 4216 is the same color as subpixel 4213. In the present embodiment, as shown in fig. 4, for example, but not limited thereto, the sub-pixel 4211 has the same color as the sub-pixel 4111, the sub-pixel 4212 has the same color as the sub-pixel 4112, and the sub-pixel 4213 has the same color as the sub-pixel 4113.
The mapping relationship between the image data of the sub-pixel 4213 and the image data of the sub-pixel 4214 is schematically shown by a broken-line arrow in fig. 4. Since virtual pixel n 'and virtual pixel n' +1 share subpixel 4213 and subpixel 4214, subpixel 4213 and subpixel 4214 contain both the image data mapped by pixel 411 and pixel 412 of conventional RGB pattern 410 during the mapping from RGB pattern 410 to SPR pattern 420. In addition, since the virtual pixel 421 includes two subpixels 4211 and 4214 with the same color, the image data of the subpixel 4111 is mapped to the two subpixels 4211 and 4214 simultaneously in the mapping process from the pixel 411 to the virtual pixel 421. The case of virtual pixel 422 is similar to virtual pixel 421. Unlike the embodiment described with reference to fig. 3, in the present embodiment, the image data of the sub-pixels of SPR pattern 420 are compensated by compensation coefficients f (x), the compensation coefficient of each sub-pixel of SPR pattern 420 being set according to the image data of the corresponding two adjacent pixels of conventional RGB pattern 410. From the above description, the image data of the subpixel 4213 and the subpixel 4214 can be given by the following equations, respectively:
L(y3)=M(y3)[L(x3)×p×f(x6)+L(x6)×q×f(x3)]
L(y4)=M(y4)[L(x1)×q×f(x4)+L(x4)×p×f(x1)]
L(xi) Or L (y)j) Respectively represent sub-pixels xiOr sub-pixel yjThe image data of (1); coefficients p and q are image data distribution coefficients; m (y)j) Is used for adjusting the sub-pixel yjA gray scale adjustment function of the gray scale of (1); and a function f (x)i) Is a compensation factor, according to the sub-pixel xiSetting the image data of (1); the letters i and j represent positive integers.
In one example of the present embodiment, p > q and p + q ≧ 1. For example, but not limited to, p-2/3, q-1/3; p is 0.7 and q is 0.4.
In another example of the present embodiment, 0 ≦ f (x)i)≤1。
In another example of the present embodiment, the gradation adjustment function M (y) may be simply setj) The constant 1 is set, i.e., no gray scale adjustment is performed to increase the processing speed.
In yet another example of the present embodiment,
by compensating for the coefficient f (x)i) When some edge patterns such as bright and dark boundaries are displayed, the definition and fineness of a display picture can be improved, and therefore the image quality is enhanced. From L (y) in the present embodiment3) And L (y)4) The expression (c) in the embodiment described with reference to FIG. 3 indicates that f (x) in the present embodimenti) In the special case of 1, in some cases, the compensation factor f (x) can be adjusted byi) The image processing speed is increased by setting 1.
It should be understood that although only an example in which each pixel of the second pattern includes four sub-pixels and adjacent pixels share two sub-pixels is described above, the present method is applicable to all display devices, display systems, and display technologies using sub-pixel rendering in which sub-pixels are shared.
FIG. 5 shows a gray scale adjustment function M (y)j) Schematic diagram of the adjustment effect. As shown in fig. 5, the abscissa is a desired set gray scale value, and the ordinate is an actually obtained gray scale value. The dotted line 510 shows the gray level curve without gray level adjustment. As can be seen from the dashed line 510, the actually obtained gray scale value exhibits a non-linear characteristic, which is reflected in the display effect, that is, the actually displayed image has a gray scale difference from the expected image. The solid line 520 is shown passing through a suitable gray scale adjustment function M (y)j) And (5) carrying out the adjusted gray scale curve. As can be seen from the solid line 520, through the use of the gray scale adjustment function M (y)j) The gray scale curve restores the linearity again after adjustment, and the linearity is reflected on the display effect, namely, the actually displayed picture has no gray scale difference relative to the expected picture, and the display effect of the color and the like of the image is closer to the original picture.
The above description is only an exemplary embodiment of the present application and an illustration of the technical principles applied. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (13)

1. A display device, comprising: an information processing module and a display module, wherein,
the information processing module includes:
a data receiving module for receiving image data of a first pattern;
a data output module for outputting image data of the second pattern; and
a data processing module for mapping the first pattern to the second pattern by a sub-pixel rendering method;
the display module is used for displaying the second pattern; wherein each pixel of the first pattern corresponds to one virtual pixel of the second pattern, two adjacent virtual pixels of the second pattern share one or more sub-pixels, the data processing module can compensate the image data of the shared sub-pixels of the second pattern by a compensation coefficient, and the compensation coefficient is set according to the image data of the two adjacent pixels of the first pattern corresponding to the shared sub-pixels of the second pattern or is set to be a constant.
2. The display device according to claim 1,
each pixel of the first pattern includes three sub-pixels arranged in a first direction and having different colors from each other;
each virtual pixel of the second pattern comprises four sub-pixels, namely a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel, wherein the colors of the first sub-pixel, the second sub-pixel and the third sub-pixel are different from each other, the color of the fourth sub-pixel is the same as that of the first sub-pixel, and two adjacent virtual pixels of the second pattern share two sub-pixels.
3. The display device according to claim 1 or 2, wherein the sub-pixels of the second pattern are arranged in the order of RGB or BGR in the first direction.
4. A display device according to claim 1 or 2, wherein the length of each sub-pixel of the second pattern in the first direction is 1.5 times the length of the sub-pixel of the first pattern in the first direction.
5. A display device according to claim 1 or 2, wherein the image data represents transmittance or brightness.
6. The display device of claim 1 or 2, wherein the display module comprises at least one of an LCD panel and an OLED panel.
7. The display device according to claim 2, wherein an nth pixel of the first pattern is adjacent to an n +1 th pixel,
the nth pixel comprises three sub-pixels x1、x2、x3The n +1 th pixel comprises three sub-pixels x4、x5、x6
An nth 'virtual pixel of the second pattern is adjacent to an n' +1 th virtual pixel, where n and n 'are positive integers, and the nth' virtual pixel includes four sub-pixels y1、y2、y3、y4The n' +1 th virtual pixel comprises four sub-pixels y3、y4、y5、y6Wherein the sub-pixel y1、y2、y3The colors are different, the sub-pixel y1And y4Same color, the sub-pixel y2And y5Same color, the sub-pixel y3And y6Same color, the sub-pixel x of the first pattern1With the sub-pixel y of the second pattern1Same color, the sub-pixel x of the first pattern2With the sub-pixel y of the second pattern2Same color, the sub-pixel x of the first pattern3With the sub-pixel y of the second pattern3The colors are the same;
the sub-pixel y is shared by the n 'th virtual pixel and the n' +1 th virtual pixel3And the sub-pixel y4
The nth pixel of the first pattern corresponds to the nth' dummy pixel of the second pattern;
the (n + 1) th pixel of the first pattern corresponds to the (n' + 1) th virtual pixel of the second pattern;
for the sub-pixel y3Of the image dataThe compensation of (d) is performed according to the following formula:
L(y3)=M(y3)[L(x3)×p×f(x6)+L(x6)×q×f(x3)]
for the sub-pixel y4The compensation of the image data is performed according to the following equation:
L(y4)=M(y4)[L(x1)×q×f(x4)+L(x4)×p×f(x1)]
wherein, L (x)i) Or L (y)j) Respectively represent sub-pixels xiOr sub-pixel yjThe image data of (1); coefficients p and q are image data distribution coefficients; m (y)j) Is used for adjusting the sub-pixel yjA gray scale adjustment function of the gray scale of (1); the letters i and j represent positive integers; and a function f (x)i) Is the compensation factor, in terms of sub-pixel xiThe image data of (1) is set.
8. The display device according to claim 7, wherein the image data distribution coefficient p > q and p + q ≧ 1.
9. The display device according to claim 7, wherein the compensation coefficient 0 ≦ f (x)i)≤1。
10. Display device according to claim 7, wherein the compensation factor f (x)i)=1。
11. The display device of claim 7, wherein the gamma adjustment function M (y)i) Is set as M (y)i)=1。
12. The display device according to claim 7,
13. a method of subpixel rendering, comprising:
acquiring image data from the first pattern; and
mapping the first pattern to a second pattern; wherein,
each pixel of the first pattern corresponds to one virtual pixel of the second pattern, two adjacent virtual pixels of the second pattern share one or more sub-pixels, the data processing module compensates the image data of the shared sub-pixels of the second pattern by a compensation coefficient, and the compensation coefficient is set or set to be constant according to the image data of two adjacent pixels of the first pattern corresponding to the shared sub-pixels of the second pattern.
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CN105741774A (en) * 2016-01-28 2016-07-06 京东方科技集团股份有限公司 Image processing method, device thereof, and display device
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