CN102622727A - Multiple-display-mode-supporting green enhancement processing - Google Patents
Multiple-display-mode-supporting green enhancement processing Download PDFInfo
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- CN102622727A CN102622727A CN2011100299804A CN201110029980A CN102622727A CN 102622727 A CN102622727 A CN 102622727A CN 2011100299804 A CN2011100299804 A CN 2011100299804A CN 201110029980 A CN201110029980 A CN 201110029980A CN 102622727 A CN102622727 A CN 102622727A
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Abstract
The invention belongs to the field of digital image processing. According to the invention, green areas of grassland in a digital image are determined by setting the scopes of Cb and Cr, and on that basis, and a different enhancement on the green areas according to different values of Y is carried out, so that people feel more comfortable when observing. The green enhancement processing provided by the invention can be applied to multiple display modes, such as SCTV, HDTV, LCD, and the like, and have a high flexibility and compatibility.
Description
One. technical field
Patent of the present invention belongs to Digital Image Processing, Flame Image Process integrated circuit, Digital Image Processing algorithm field.Green to meadow in the digital picture etc. is handled, thereby makes that the green on meadow etc. seems more comfortable in the digital picture, is convenient to the analysis of people to digital picture.This patent is not limited to a certain image display pattern, and it has higher flexibility and compatibility applicable to multiple demonstrations such as SDTV, HDTV, PC, LCD.
Two. background technology
Continuous development along with IC industry; On a large scale, the manufacturing of VLSI (very large scale integrated circuits) is increasingly mature; Its price was but in continuous reduction when chip functions became from strength to strength; Thereby make all kinds of consumption electronic products such as DC (digital camera), DV (DV), PC (PC) universal day by day, cause people also improving constantly for the quality requirements of digital picture.
Many times; Because there is variety of issue in the green area such as meadow that influences in the digital picture that people obtain after photography or shooting of factors such as weather, exposure, individual skill level; Therefore people need a kind of post-processed means in order to remedy the deficiency in early stage; Make people when the green in zones such as digital picture medium-height grass ground is observed, feel more comfortable, make the better effects if that image seems, accepted by people more easily.
Three. summary of the invention
This patent is mainly used in the enhancing of the green area on meadow etc. in the digital picture.This patent has at first been stipulated the scope of the Cb and the Cr of required enhancing green area, then the Cb and the Cr value of input data is judged.If finding the Cb and the Cr value of input data drops in the green fields of required enhancing; Then further read its Y value; Find the pairing Y value of these group input data, Cb value and the pairing output data of Cr value; According to the corresponding relation of these input and output, accomplish the input operation of data, reach purpose to green area figure image intensifying; Otherwise if the Cb of input data and Cr value not in the green fields of required enhancing, then are left intact to the input data, output data equals to import data.
Four. description of drawings
Fig. 1 is the green schematic block diagram that strengthens, and wherein y_in, cb_in, cr_in, de_in, vsync_in, hsync_in are input signal, and y_out, cb_out, cr_out, de_out, vsync_out, hsync_out are the output signal.
Fig. 2 is the green sequential chart that strengthens, and the output signal is a clk with respect to the time delay of input signal.
The corresponding Y increment of the different Y values of Fig. 3.
The corresponding Cb increment of the different Y values of Fig. 4.
The corresponding Cr increment of the different Y values of Fig. 5.
Five. embodiment
This patent has a control signal and is used to control the color that whether carries out image and strengthens, and when control signal is a high level, control signal is effective; The color that carries out image strengthens, and this moment is if the Cb value of pixel drops on [25,121]; And when Cr dropped on [21,125], then this pixel was for needing the green pixel point of processing; According to different Y values the different increment of the employing of pixel is changed, wherein the Y value is in the corresponding one group of incremental data of regional per 15 grades of gray scales below 74, the key area that the Y value is regulated as needs in 74 to 164 zone again; The corresponding one group of incremental data of per 10 grades of gray scales, Y value one group of incremental data of regional per 15 grades of gray scales correspondence between 164 to 209, and work as the Y value greater than 209 later zones; For avoiding image big distortion to occur, its increment variation is 0, and promptly its output data equals to import data.The corresponding increment variation of concrete each gray level sees table.The suspension points at Y row place is represented the increase successively of Y value, and the suspension points of Δ Y, Δ Cb, Δ Cr row representes that the increment of corresponding Δ Y, Δ Cb, Δ Cr is identical with the suspension points lastrow.
The implementation of this patent can be to realize as adopt FPGA or make ASIC through hardware, also can realize as write c program through software approach, no matter adopt above which kind of mode all to belong to scope.
This patent adopts the mode of look-up table when being used for realization figure image intensifying, promptly drop on the pixel in the enhancement region for each, can search out one group of corresponding increments of change value according to its Y value.
| Y | ΔY | ΔCb | |
| 0 | 13 | -7 | -7 |
| … | … | … | … |
| 4 | 13 | -7 | -7 |
| 5 | 13 | -7 | -7 |
| … | … | … | … |
| 9 | 13 | -7 | -7 |
| 10 | 13 | -7 | -7 |
| … | … | … | … |
| 14 | 13 | -7 | -7 |
| 15 | 12 | -6 | -6 |
| … | … | … | … |
| 19 | 12 | -6 | -6 |
| 20 | 12 | -6 | -6 |
| … | … | … | … |
| 24 | 12 | -6 | -6 |
| 25 | 12 | -6 | -6 |
| … | … | … | … |
| 29 | 12 | -6 | -6 |
| 30 | 11 | -5 | -5 |
| … | … | … | … |
| 34 | 11 | -5 | -5 |
| 35 | 11 | -5 | -5 |
| … | … | … | … |
| 39 | 11 | -5 | -5 |
| 40 | 11 | -5 | -5 |
| … | … | … | … |
| 44 | 11 | -5 | -5 |
| 45 | 10 | -4 | -4 |
| … | … | … | … |
| 49 | 10 | -4 | -4 |
| 50 | 10 | -4 | -4 |
| … | … | … | … |
| 59 | 10 | -4 | -4 |
| 60 | 9 | -3 | -3 |
| … | ?… | … | … |
| 69 | 9 | -3 | -3 |
| 70 | 9 | -3 | -3 |
| … | … | … | … |
| 74 | 9 | -3 | -3 |
| 75 | 8 | -2 | -2 |
| … | … | … | … |
| 79 | 8 | -2 | -2 |
| 80 | 8 | -2 | -2 |
| … | … | … | … |
| 84 | 8 | -2 | -2 |
| 85 | 7 | -3 | -3 |
| 86 | 7 | -3 | -3 |
| 87 | 7 | -3 | -3 |
| 88 | 7 | -3 | -3 |
| 89 | 7 | -3 | -3 |
| 90 | 7 | -3 | -3 |
| 91 | 7 | -3 | -3 |
| 92 | 7 | -3 | -3 |
| 93 | 7 | -3 | -3 |
| 94 | 7 | -3 | -3 |
| 95 | 6 | -4 | -4 |
| … | … | … | … |
| 99 | 6 | -4 | -4 |
| 100 | 6 | -4 | -4 |
| … | … | … | … |
| 104 | 6 | -4 | -4 |
| 105 | 7 | -4 | -4 |
| … | … | … | … |
| 109 | 7 | -4 | -4 |
| 110 | 7 | -4 | -4 |
| … | … | … | … |
| 114 | 7 | -4 | -4 |
| 115 | 8 | -5 | -5 |
| … | … | … | … |
| 119 | 8 | -5 | -5 |
| 120 | 8 | -5 | -5 |
| … | … | … | … |
| 124 | 8 | -5 | -5 |
| 125 | 7 | -4 | -4 |
| … | … | … | … |
| 129 | 7 | -4 | -4 |
| 130 | 7 | -4 | -4 |
| 131 | 7 | -4 | -4 |
| 132 | 7 | -4 | -4 |
| 133 | 7 | -4 | -4 |
| 134 | 7 | -4 | -4 |
| 135 | 6 | -5 | -5 |
| 136 | 6 | -5 | -5 |
| 137 | 6 | -5 | -5 |
| 138 | 6 | -5 | -5 |
| 139 | 6 | -5 | -5 |
| 140 | 6 | -5 | -5 |
| … | … | … | … |
| 144 | 6 | -5 | -5 |
| 145 | 5 | -5 | -6 |
| … | … | … | … |
| 154 | 5 | -5 | -6 |
| 155 | 4 | -4 | -5 |
| … | … | … | … |
| 159 | 4 | -4 | -5 |
| 160 | 4 | -4 | -5 |
| … | … | … | … |
| 164 | 4 | -4 | -5 |
| 165 | 3 | -3 | -4 |
| … | … | … | … |
| 170 | 3 | -3 | -4 |
| 171 | 3 | -3 | -4 |
| 172 | 3 | -3 | -4 |
| 173 | 3 | -3 | -4 |
| 174 | 3 | -3 | -4 |
| 175 | 3 | -3 | -4 |
| 176 | 3 | -3 | -4 |
| 177 | 3 | -3 | -4 |
| 178 | 3 | -3 | -4 |
| 179 | 3 | -3 | -4 |
| 180 | 2 | -2 | -3 |
| … | … | … | … |
| 189 | 2 | -2 | -3 |
| 190 | 2 | -2 | -3 |
| … | … | … | … |
| 194 | 2 | -2 | -3 |
| 195 | 1 | -1 | -2 |
| … | … | … | … |
| 199 | 1 | -1 | -2 |
| 200 | 1 | -1 | -2 |
| … | … | … | … |
| 209 | 1 | -1 | -2 |
| 210 | 0 | 0 | 0 |
| 211 | 0 | 0 | 0 |
| 212 | 0 | 0 | 0 |
| 213 | 0 | 0 | 0 |
| 214 | 0 | 0 | 0 |
| 215 | 0 | 0 | 0 |
| 216 | 0 | 0 | 0 |
| 217 | 0 | 0 | 0 |
| 218 | 0 | 0 | 0 |
| 219 | 0 | 0 | 0 |
| 220 | 0 | 0 | 0 |
| … | … | … | … |
| 254 | 0 | 0 | 0 |
This patent is not limited to the enhancing of the green area on meadow; Differentiate Cb and the Cr value that green area is used through changing; We can carry out enhancement process to green areas such as clothes with this patent equally; Being used for the corresponding relation of the green input and output that strengthen in addition neither be unique, so for the adjusting trend of high eight-bit data or identical with this patent or just change Cb, the Cr value that is used for definite green fields for the incremental adjustments trend of Y, Cb, Cr, and to Y; Cb, the adjusting trend of Cr parameter is still identical with this patent all belongs to scope.
Claims (6)
1. an elder generation judges according to the value of input pixel Cb and Cr whether this point is the green pixel point that needs are handled, and then the required green pixel point of handling is sought corresponding Δ Y, Δ Cb, Δ Cr increment relation according to its Y value component again and carries out green enhancement processing method.
2. one group is used to realize the green corresponding Δ Y of different Y values, Δ Cb, the Δ Cr increment relation that strengthens
3. the method for article one description comprises the ASIC of hardware handles aspect, the Computer Image Processing software of software processes aspect in the application of different field.
4. the application of method aspect the difference demonstration of article one description comprises SDTV, HDTV, LCD.
5. the Δ Y of the different Y values correspondences described of second, Δ Cb, Δ Cr increment relation comprise the ASIC of hardware handles aspect in the application of different field, the Computer Image Processing software of software processes aspect.
6. the Δ Y of the different Y values correspondences described of second, Δ Cb, the application of Δ Cr increment relation aspect the difference demonstration comprises SDTV, HDTV, LCD.
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| CN2011100299804A CN102622727A (en) | 2011-01-27 | 2011-01-27 | Multiple-display-mode-supporting green enhancement processing |
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| CN2011100299804A CN102622727A (en) | 2011-01-27 | 2011-01-27 | Multiple-display-mode-supporting green enhancement processing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104349148A (en) * | 2014-11-21 | 2015-02-11 | 北京思比科微电子技术股份有限公司 | Method for changing green scene effect of image in real time |
| CN105719244A (en) * | 2014-12-04 | 2016-06-29 | 上海复旦微电子集团股份有限公司 | Image enhancement processing method and apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008088318A1 (en) * | 2007-01-05 | 2008-07-24 | Nucore Technology Inc. | Color correction involving color phase detection and phase-dependent control |
| TW201009748A (en) * | 2008-07-02 | 2010-03-01 | Qualcomm Inc | Color enhancement for digital images |
-
2011
- 2011-01-27 CN CN2011100299804A patent/CN102622727A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008088318A1 (en) * | 2007-01-05 | 2008-07-24 | Nucore Technology Inc. | Color correction involving color phase detection and phase-dependent control |
| TW201009748A (en) * | 2008-07-02 | 2010-03-01 | Qualcomm Inc | Color enhancement for digital images |
Non-Patent Citations (2)
| Title |
|---|
| KUO-LIANG CHUNG等: "Efficient edge-preserving algorithm for color contrast enhancement with application to color image segmentation", 《JOURNAL OF VISUAL COMMUNICATION AND IMAGE REPRESENTATION》, vol. 19, no. 5, 31 July 2008 (2008-07-31), pages 299 - 310, XP022696529, DOI: doi:10.1016/j.jvcir.2008.02.002 * |
| 郑庆 等: "基于复合变换的人脸光照补偿方案", 《计算机应用研究》, vol. 25, no. 2, 29 February 2008 (2008-02-29) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104349148A (en) * | 2014-11-21 | 2015-02-11 | 北京思比科微电子技术股份有限公司 | Method for changing green scene effect of image in real time |
| CN105719244A (en) * | 2014-12-04 | 2016-06-29 | 上海复旦微电子集团股份有限公司 | Image enhancement processing method and apparatus |
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Application publication date: 20120801 |