CN101409849B - Method of generating dithering mask - Google Patents
Method of generating dithering mask Download PDFInfo
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- CN101409849B CN101409849B CN2007101811564A CN200710181156A CN101409849B CN 101409849 B CN101409849 B CN 101409849B CN 2007101811564 A CN2007101811564 A CN 2007101811564A CN 200710181156 A CN200710181156 A CN 200710181156A CN 101409849 B CN101409849 B CN 101409849B
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Abstract
本发明提供一种递色屏蔽及其产生方法，该方法包含有提供一特定子递色屏蔽，以及经由调整该特定子递色屏蔽以产生该递色屏蔽中多个子递色屏蔽，因此，所产生的递色屏蔽包含有多个子递色屏蔽，每一个子递色屏蔽包含有(4N)×(4N)个递色阀值，且N为正整数，其中该多个子递色屏蔽中至少两个子递色屏蔽的内容不相同。通过将递色屏蔽中的规律性打散，本发明的递色屏蔽可避免造成画面闪烁或在画面上出现非预期的图样，使画面的显示质量提升。
The present invention provides a dithering mask and a method for generating the same. The method includes providing a specific sub-dithering mask, and generating a plurality of sub-dithering masks in the dithering mask by adjusting the specific sub-dithering mask. Thus, the generated dithering mask includes a plurality of sub-dithering masks, each of which includes (4N)×(4N) dithering thresholds, where N is a positive integer, and at least two of the plurality of sub-dithering masks have different contents. By breaking up the regularity in the dithering mask, the dithering mask of the present invention can avoid causing screen flickering or unexpected patterns on the screen, thereby improving the display quality of the screen.
Description
Technical field
The present invention relates to a kind of color-succession shielding and production method thereof, relate in particular to a kind of color-succession shielding and production method thereof of avoiding film flicker.
Background technology
Passing the look technology is the method for a kind of performance halftoning (halftone), its color dot with two kinds of different color ranges is placed with ad hoc fashion, integral action by human eye makes and visually can show the color gradient that is positioned in the middle of these two kinds of color ranges, reaches the chromatic effect of passing on the spatial domain (space domain); In addition, present the effect of passing look also picture frame rotation being made color dot on the same position between these two kinds of color ranges, switch fast on the time-domain (time domain).
Yet the above-mentioned look technology of passing may cause film flicker in some cases or unexpected pattern occurs on picture, the bright especially line of brightness or the bright line of rolling etc. for example occur.For instance, when picture regularly only shows two pixels in adjacent four pixels (pixel), shown in Fig. 1 (a), (represent the pixel that do not show with oblique line among the figure, that is, pixel 130,140 content can be shown in the display frame, and pixel 110,120 content does not then show), and the result who passs behind the look makes pixel 130,150,160,170 have higher color range A, when the pixel of other position has lower color range B, after the process rotation processing of above-mentioned time-domain, shown in Fig. 1 (b), pixel with higher color range A all is rotated to the position that does not show, so more last time of brightness meeting of the display frame of Fig. 1 (b), the brightness that is Fig. 1 (a) comes secretly, then, display frame rotation generation Fig. 1 (c) as Fig. 1 (b), and the display frame of Fig. 1 (c) is passed through when rotating the display frame that forms shown in Fig. 1 (d) again, because having the pixel of higher color range A is rotated once again to display position, therefore, display frame meeting shown in Fig. 1 (d) gets brighter than the display frame of last time, and these brightness change the phenomenon that promptly causes flicker in human eye, make the display quality of picture worsen.
Summary of the invention
In view of this, one of purpose of the present invention provides a kind of color-succession shielding and production method thereof of avoiding film flicker, to address the above problem.
According to one embodiment of the invention, it provides a kind of method of generation one color-succession shielding.This method includes provides a specific sub-color-succession shielding, and via adjusting this specific sub-color-succession shielding to produce a plurality of sub-color-succession shieldings in this color-succession shielding.
According to another embodiment of the present invention, it provides a kind of color-succession shielding.This color-succession shielding includes a plurality of sub-color-succession shieldings, and each sub-color-succession shielding includes that (4N) * (4N) is individual to pass the look threshold values, and N is a positive integer; Wherein the content of at least two sub-color-succession shieldings is inequality in these a plurality of sub-color-succession shieldings, and it produces via adjusting a specific sub-color-succession shielding.
Description of drawings
Fig. 1 (a) is to handle the schematic diagram of back in a display frame of different time points through the known look of passing to Fig. 1 (d).
Fig. 2 is the schematic diagram of an embodiment of color-succession shielding of the present invention.
Fig. 3 is the schematic diagram of another embodiment of color-succession shielding of the present invention.
The reference numeral explanation
200,300 color-succession shieldings
210,220,230,240,310,320,330,340 sub-color-succession shieldings
212,214,216,218,312,314,316,318 color-succession shielding unit
Embodiment
For fear of causing film flicker or unexpected pattern occurs on picture, the present invention upsets the regularity in the color-succession shielding producing a kind of color-succession shielding of innovation, can solve the problem that known technology faced under the prerequisite of tone after passing look not influencing.Please refer to Fig. 2, it is the schematic diagram of an embodiment of color-succession shielding of the present invention, as shown in the figure, color-succession shielding 200 is one 8 * 8 matrixes, include 44 * 4 sub-color-succession shieldings 210,220,230,240, and each sub-color-succession shielding all includes 42 * 2 color-succession shielding unit 212,214,216,218, and including 4, each color-succession shielding unit passs the look threshold values, for example color-succession shielding unit 21 2 includes and passs look threshold values a0, a1, a2 and a 3, and color-succession shielding unit 214 includes passs look threshold values b0, b1, b2 and b3.As can be seen from Figure, sub-color-succession shielding 220,230,240 draw via adjusting sub-color-succession shielding 210, the method of adjusting includes the place-exchange (for example sub-color-succession shielding 220) with two color-succession shielding unit of same row, will be with the place-exchange (for example sub-color-succession shielding 230) of two color-succession shielding unit of delegation, adjust in the color-succession shielding unit and pass the arrangement position (for example sub-color-succession shielding 240) of look threshold values and the combination of said method, in more detail, with the location swap of color-succession shielding unit 214 and with the location swap of color-succession shielding unit 216 with color-succession shielding unit 218, but the content that does not change the color-succession shielding unit forms sub-color-succession shielding 220 with color-succession shielding unit in the sub-color-succession shielding 210 212; With the location swap of color-succession shielding unit 216 and with the location swap of color-succession shielding unit 214 with color-succession shielding unit 218, but the content that does not change the color-succession shielding unit forms sub-color-succession shielding 230 with color-succession shielding unit in the sub-color-succession shielding 210 212; Sub-color-succession shielding 240 then is the position that does not change color-succession shielding unit in the sub-color-succession shielding 210, but the arrangement position of adjusting in the color-succession shielding unit of passing the look threshold values forms.
Fig. 3 is the schematic diagram of another embodiment of color-succession shielding of the present invention, wherein color-succession shielding 300 includes 44 * 4 sub-color-succession shieldings 310 equally, 320,330,340, each sub-color-succession shielding includes 42 * 2 color-succession shielding unit 312 again, 314,316,318, and each color-succession shielding unit includes 4 again and passs the look threshold values, in the present embodiment, sub-color-succession shielding can form by rotating a specific sub-color-succession shielding, for example sub-color-succession shielding 320,330 are about to color-succession shielding unit in the sub-color-succession shielding 310 rotates a special angle in a clockwise direction and forms, and the color-succession shielding unit 312 of sub-color-succession shielding 340 gyrator color-succession shieldings 310,314,316, a plurality of look threshold values of passing form in 318, therefore, present embodiment also can be considered the look rotary course of passing on the time-domain is added spatial domain to produce color-succession shielding 300.
In above-mentioned first embodiment and second embodiment, the combination that the method for adjustment that is proposed includes at least two color-succession shielding unit of adjustment or passs the arrangement position of look threshold values, rotation a plurality of color-succession shieldings unit or pass look threshold values and said method, can be simply on real the work with mutual exclusion or (exclusive OR, XOR) logical expression is realized.Please note, needn't be defined as sub-color-succession shielding 210 (310) as the specific sub-color-succession shielding of adjusting foundation, also can use other sub-color-succession shielding, as sub-color-succession shielding 220 (320) as specific sub-color-succession shielding, form sub-color-succession shielding 210 (310), 230 (330), 240 (340) by adjusting sub-color-succession shielding 220 (320) in this case, in addition, the present invention does not only limit with a sub-color-succession shielding as adjusting foundation yet, and also unnecessary each sub-color-succession shielding that makes is all inequality.
Known color-succession shielding is generally constituted via repeatedly arranging the back by comprising 4 * 4 same sub-color-succession shieldings of passing the look threshold values, yet, as mentioned above, the method of the generation color-succession shielding that the present invention is disclosed can make no longer have regularity in the color-succession shielding, please note, though the above embodiments are example with 8 * 8 color-succession shieldings all, yet the present invention is not as limit, formed color-succession shielding can be 16 * 16 matrixes, 12 * 12 matrixes, 20 * 20 matrixes or the like, as long as a plurality of sub-color-succession shielding in the color-succession shielding includes (4N) * (4N) individual look threshold values of passing respectively, wherein N is a positive integer, and the content of at least two sub-color-succession shieldings is inequality in a plurality of sub-color-succession shieldings promptly belongs to category of the present invention, because the regularity in the color-succession shielding is broken up, so color-succession shielding of the present invention can effectively avoid causing film flicker or occur the situation of unexpected pattern on picture, and keep expection simultaneously pass the look result.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101811564A CN101409849B (en) | 2007-10-12 | 2007-10-12 | Method of generating dithering mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101811564A CN101409849B (en) | 2007-10-12 | 2007-10-12 | Method of generating dithering mask |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101409849A CN101409849A (en) | 2009-04-15 |
| CN101409849B true CN101409849B (en) | 2011-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007101811564A Expired - Fee Related CN101409849B (en) | 2007-10-12 | 2007-10-12 | Method of generating dithering mask |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI514345B (en) * | 2013-08-30 | 2015-12-21 | Himax Tech Ltd | A method of dithering image processing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5552800A (en) * | 1990-08-09 | 1996-09-03 | Kabushiki Kaisha Toshiba | Color display control apparatus for controlling display gray scale of each scanning frame or each plurality of dots |
| CN1389840A (en) * | 2001-06-01 | 2003-01-08 | 汤姆森许可贸易公司 | Method and apparatus for treating video picture data displayed on display device |
| CN1627349A (en) * | 2003-12-08 | 2005-06-15 | Lg电子有限公司 | Method and apparatus for driving plasma display panel |
| US7110010B1 (en) * | 1998-10-12 | 2006-09-19 | Victor Company Of Japan, Ltd. | Apparatus and method of video signal processing for matrix display apparatus |
-
2007
- 2007-10-12 CN CN2007101811564A patent/CN101409849B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5552800A (en) * | 1990-08-09 | 1996-09-03 | Kabushiki Kaisha Toshiba | Color display control apparatus for controlling display gray scale of each scanning frame or each plurality of dots |
| US7110010B1 (en) * | 1998-10-12 | 2006-09-19 | Victor Company Of Japan, Ltd. | Apparatus and method of video signal processing for matrix display apparatus |
| CN1389840A (en) * | 2001-06-01 | 2003-01-08 | 汤姆森许可贸易公司 | Method and apparatus for treating video picture data displayed on display device |
| CN1627349A (en) * | 2003-12-08 | 2005-06-15 | Lg电子有限公司 | Method and apparatus for driving plasma display panel |
Non-Patent Citations (1)
| Title |
|---|
| CN 1389840 A,全文. |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI514345B (en) * | 2013-08-30 | 2015-12-21 | Himax Tech Ltd | A method of dithering image processing |
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| CN101409849A (en) | 2009-04-15 |
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Effective date of registration: 20200416 Address after: No.1, Duhang 1st Road, Hsinchu City, Hsinchu Science Park, Taiwan, China Patentee after: MEDIATEK Inc. Address before: Hsinchu County, Taiwan, China Patentee before: MSTAR SEMICONDUCTOR Inc. |
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Granted publication date: 20111123 |