CN101668225B - Method for adjusting gamma curve to improve image of flat television - Google Patents
Method for adjusting gamma curve to improve image of flat television Download PDFInfo
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- CN101668225B CN101668225B CN200910190716A CN200910190716A CN101668225B CN 101668225 B CN101668225 B CN 101668225B CN 200910190716 A CN200910190716 A CN 200910190716A CN 200910190716 A CN200910190716 A CN 200910190716A CN 101668225 B CN101668225 B CN 101668225B
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Abstract
The invention discloses a method for adjusting a gamma curve to improve an image of a flat television. By taking data collected on a display screen of the flat television by a color analyzer as reference, three stimulus values of R, G and B corresponding to a point on the gamma curve are taken as input signal intensity to be input into the flat television by a serial transmission line, according to actual requirements, the three stimulus values of R, G and B are adjusted and then updated into the flat television, and parameters displayed on the color analyzer after being adjusted are observed until the gamma curve meets the actual requirements, and the gamma curve is adjusted to ensure the image effect to approach subjective requirements of a consumer.
Description
[technical field]
The present invention relates to image of flat television image quality regulation technology field, the particularly a kind of gamma of adjustment curve improves the method for image of flat television.
[background technology]
For panel TV set, image effect has bigger difference because of the influence of the luminance non-linearity of panel TV display screen, so added the light characteristic that the gamma curve improves the panel TV display screen, the image effect that display screen is appeared is more natural.At present; The method that the adjustment of gamma curve is used often is automatic adjustment; As: No. 200510050201.3 disclosed LCD GAMMA curve of one Chinese patent application and the automatic measurement of colour temperature and bearing calibration and system, its method generally is to send test signal through computer, reads required parameter through color analyzer again; Calculate gamma curve and the white balance value that needs through systems soft ware, be input to the software module of signal plate then.Yet there is following defective in this method: at first be inconvenient R with the gamma curve, and G, three curves of B are adjusted separately; Secondly, automatic adjusting method is not suitable for the each point of gamma curve or segmentation are finely tuned, thereby can not make image effect more near the subjective requirement of people.
[summary of the invention]
For addressing the above problem, main purpose of the present invention is to provide a kind of gamma of adjustment curve to improve the method for image of flat television, so that image effect can be near consumer's subjective requirement.
For realizing above-mentioned purpose, technical scheme of the present invention is:
A kind of gamma of adjustment curve improves the method for image of flat television, comprises the steps:
S1: make up the gamma curvilinear coordinate system through systems soft ware, the gamma curve is divided into R, G; Three curves of B; The i point (i=0-1024) of x coordinate is located corresponding R, G, B three primary colors values inputs to panel TV as input signal strength through computer and serial ports transmission line;
S2: gather the present brightness of i point; I point on the G curve done move up and down; Change pairing y coordinate figure, promptly adjust the yGi value on the computer, then with the up-to-date y coordinate figure of i point on the G curve as input signal strength; Input to panel TV through computer and serial ports transmission line, the brightness of ordering up to i meets the demands;
S3: gather the X in the pairing CIE1931XYZ color space of i point, Y value reading, the R of adjustment gamma curve; The values yRi that B curve i point is corresponding; YBi, then with the up-to-date y coordinate figure of i point on R and the B curve as input signal strength, input to panel TV through computer and serial ports transmission line; Up to the X that i is ordered, the Y value meets the demands;
S4: in the adjustment data record computer memory cell of the gamma curve after will having adjusted, write then in the middle of the software module of panel TV disposable plates.
Compared to prior art, the present invention utilizes the data of the collection of color analyzer on the panel TV display screen to be reference, with the corresponding R of certain point on the gamma curve; G, three values of B directly input to panel TV set as input signal strength through the serial ports transmission line, and according to actual requirement; Adjustment R, G, three values of B; Be updated to panel TV set again; Observe the parameter that adjusted color analyzer shows, reach actual requirement until the gamma curve, adjustment gamma curve is so that image effect can be near consumer's subjective requirement.
[description of drawings]
Fig. 1 is a system principle diagram of the present invention.
Fig. 2 is a gamma curve synoptic diagram of the present invention.
Fig. 3 is a flow process diagram of the present invention.
[embodiment]
See also Fig. 1, shown in Figure 2, the present invention includes the computer and the color analyzer that are connected with panel TV set through the serial ports transmission line.Wherein, color analyzer provides X, the Y value in the CIE1931XYZ color space of panel TV in real time, and parameter such as brightness.Computer then be responsible for to make up the gamma curve synoptic diagram, and the R that i is ordered, G, and B tristimulus values yRi, yGi, yBi inputs to panel TV set as signal strength signal intensity through Serial Port Line.
In yuv space, learn that by Y=0.299R+0.587G+0.114B brightness Y is mainly determined by the G primary colours; In the CIE1931XYZ color space, the R primary colours of three primary colors change mainly influences the X value, and the G primary colours change mainly influences Y value, B primary colours variable effect X and Y value.The stereovision of the variation decision image of brightness, R, G, colour mixture degree decision white balance and the colour temperature of B.So can regulate the G primary colours earlier, make brightness reach subjective requirement; Regulate R again, the B primary colours make white balance reach subjective requirement.The present invention is the corresponding R of certain point on the gamma curve, G, and three values of B directly input to panel TV set as input signal strength through the serial ports transmission line; And according to actual requirement, adjustment R, G; Three values of B; Be updated to panel TV set again, observe the parameter that adjusted color analyzer shows, reach actual requirement until the gamma curve.
See also shown in Figure 3ly, the present invention adjusts the method that the gamma curve improves image of flat television and comprises the steps:
S1: panel TV set is initially standard state.Panel TV set is worked, and it is made as standard state.Said standard state is signal from being input to demonstration, and its brightness and color etc. do not have through strengthening processing such as optimization;
S2: make up the gamma curvilinear coordinate system through systems soft ware.Be expressed as input signal strength with the x axle, the y axle is represented R, G, and the values of B three primary colors makes up the gamma curvilinear coordinate system on computers;
S3: the gamma curve is divided into R, G, three curves of B, on the X coordinate, with the corresponding R in some place that needs are regulated, G, B three primary colors values inputs to panel TV as input signal strength through computer and serial ports transmission line.What suppose the needs adjusting is the i point, and the i point (i=0-1024) of x coordinate is located corresponding R, G, and B three primary colors values inputs to panel TV as input signal strength through computer and serial ports transmission line;
S4: with the pairing brightness of point that color analyzer need be regulated from the collection of panel TV display screen, the i.e. present brightness of i point; I point on the G curve done move up and down; Change pairing y coordinate figure, promptly adjust the yGi value on the computer, then with the up-to-date y coordinate figure of i point on the G curve as input signal strength; Input to panel TV through computer and serial ports transmission line, satisfy subjective requirement up to the brightness that i is ordered;
S5: gather the X in the pairing CIE1931XYZ color space of i point with color analyzer from the panel TV display screen, Y value reading, the R of adjustment gamma curve; The values yRi that B curve i point is corresponding; YBi, soon the i point on R and the B curve is done and is moved up and down, and changes its pairing y coordinate figure; Then with the up-to-date y coordinate figure of i point on R and the B curve as input signal strength; Input to panel TV through computer and serial ports transmission line, up to the X that i is ordered, the Y value satisfies subjective requirement;
S6: in the adjustment data record computer memory cell of the gamma curve after will having adjusted, write then in the middle of the software module of panel TV disposable plates.
Can find out by above; To cause that brightness changes not obvious when gamma curve point or certain section; Cause the image level sense not strong, or because of regional demand, need white balance integral body red slightly partially (low colour temperature) or partially blue (high colour temperature) wait and can use creating described method solution.
Most preferred embodiment described above only is that the present invention is set forth and explains, but is not limited to disclosed any concrete form, and it is possible carrying out many modifications and variation.
Claims (4)
1. adjust the method that the gamma curve improves image of flat television for one kind, it is characterized in that, comprise the steps:
S1: make up the gamma curvilinear coordinate system through systems soft ware, the gamma curve is divided into R, G; Three curves of B, the R that the i point place of x coordinate is corresponding, G; B three primary colors values inputs to panel TV as input signal strength through computer and serial ports transmission line, wherein, and i=0-1024;
S2: gather the present brightness of i point; I point on the G curve done move up and down; Change pairing y coordinate figure, promptly adjust the yGi value on the computer, then with the up-to-date y coordinate figure of i point on the G curve as input signal strength; Input to panel TV through computer and serial ports transmission line, the brightness of ordering up to i meets the demands;
S3: gather the X in the pairing CIE1931XYZ color space of i point, Y value reading, the R of adjustment gamma curve; The values yRi that B curve i point is corresponding; YBi, then with the up-to-date y coordinate figure of i point on R and the B curve as input signal strength, input to panel TV through computer and serial ports transmission line; Up to the X that i is ordered, the Y value meets the demands;
S4: the adjustment data of the gamma curve after will having adjusted are recorded in the computer memory cell, write then in the middle of the software module of panel TV disposable plates.
2. adjustment gamma curve as claimed in claim 1 improves the method for image of flat television, it is characterized in that, before step S1, also comprises the steps:
Panel TV set is initially standard state.
3. adjustment gamma curve as claimed in claim 2 improves the method for image of flat television, and it is characterized in that: said i point is the point that need regulate.
4. adjustment gamma curve as claimed in claim 3 improves the method for image of flat television, and it is characterized in that: said step S3 includes step:
I point on R and the B curve done moving up and down, change its pairing y coordinate figure, obtain R, the values yRi that B curve i point is corresponding, yBi.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910190716A CN101668225B (en) | 2009-09-25 | 2009-09-25 | Method for adjusting gamma curve to improve image of flat television |
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| CN200910190716A CN101668225B (en) | 2009-09-25 | 2009-09-25 | Method for adjusting gamma curve to improve image of flat television |
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| CN101668225A CN101668225A (en) | 2010-03-10 |
| CN101668225B true CN101668225B (en) | 2012-09-26 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102348126A (en) * | 2010-08-02 | 2012-02-08 | 厦门华侨电子股份有限公司 | Method for realizing automatic adjustment of Gamma curve of television through computer |
| CN102497559B (en) * | 2011-12-20 | 2014-10-01 | 深圳Tcl新技术有限公司 | Picture quality regulation method and system for quick screen matching |
| CN102568429B (en) * | 2012-03-01 | 2013-09-04 | 深圳市华星光电技术有限公司 | Method and device for simulating squint angle image |
| CN103067743B (en) * | 2012-12-20 | 2015-03-25 | 广州视源电子科技股份有限公司 | System and method of quick adjustment of liquid crystal display television |
| CN104599633B (en) * | 2015-01-30 | 2017-01-11 | 四川虹视显示技术有限公司 | OLED (Organic Light Emitting Diode) gamma correction device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1845232A (en) * | 2005-04-08 | 2006-10-11 | 浙江大学 | Automatic measurement and correction method and system for LCD GAMMA curve and color temperature |
| CN101105916A (en) * | 2007-08-10 | 2008-01-16 | 东莞黄江达裕科技电子厂 | GAMMA curve regulation method and device |
| CN101447161A (en) * | 2008-12-02 | 2009-06-03 | 四川长虹电器股份有限公司 | Method for regulating flat panel display screen |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1845232A (en) * | 2005-04-08 | 2006-10-11 | 浙江大学 | Automatic measurement and correction method and system for LCD GAMMA curve and color temperature |
| CN101105916A (en) * | 2007-08-10 | 2008-01-16 | 东莞黄江达裕科技电子厂 | GAMMA curve regulation method and device |
| CN101447161A (en) * | 2008-12-02 | 2009-06-03 | 四川长虹电器股份有限公司 | Method for regulating flat panel display screen |
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