CN102646398B - Image display method and device - Google Patents
Image display method and device Download PDFInfo
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- CN102646398B CN102646398B CN2011101311606A CN201110131160A CN102646398B CN 102646398 B CN102646398 B CN 102646398B CN 2011101311606 A CN2011101311606 A CN 2011101311606A CN 201110131160 A CN201110131160 A CN 201110131160A CN 102646398 B CN102646398 B CN 102646398B
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Abstract
The invention discloses an image display method and an image display device so as to meet the requirement on high color gamut of a liquid crystal display product. The method comprises the following steps of: determining a gray scale of each pixel point in a menu to be displayed; for each pixel point to be displayed in the menu to be displayed, determining a second gray scale according to the first gray scale of the menu to be displayed, and determining a driving signal corresponding to the second gray scale as the driving signal used for driving the pixel point to be displayed, wherein the color saturation of the second gray scale is higher than that of the first gray scale, and the second gray scale is less than or equal to the highest gray scale color gamut; accordingly and respectively determining the driving signal used for driving each pixel point; and according to the determined driving signal, driving and displaying the corresponding pixel point in the menu to be displayed. Due to the adoption of the technical scheme, the color saturation of image display is improved, and the color gamut is expanded.
Description
Technical field
The present invention relates to the signal process field of liquid crystal display, relate in particular to a kind of method for displaying image and device.
Background technology
At present, liquid crystal display, when receiving the picture to be shown of video card output, directly on LCDs, shows with the actual gray of each pixel in image to be displayed; GTG is corresponding to transmittance, and the higher requirement to transmittance of GTG is also higher, and limited due to technology in prior art, and the actual colour gamut that can realize is also little, and as shown in Figure 1, the triangle 1 in Fig. 1 is the maximum gamut that prior art can realize; If realize larger colour gamut, need to increase the thickness of color film color blocking, and the thickness that increases color film color blocking can reduce the transmittance of LCDs, can not take into account simultaneously high colour gamut and high transmission rate.Therefore, how when improving colour gamut, can keep the transmittance of display screen, become the bottleneck of current image display technology.
Summary of the invention
For the above-mentioned technical matters that prior art exists, the embodiment of the present invention provides a kind of method for displaying image and device, in the situation that do not change transmittance and color film color blocking, improves the colour gamut saturation degree of image to realize.
A kind of method for displaying image comprises:
According to the demonstration information of each pixel in picture to be shown self, determine GTG separately;
For each pixel to be shown in described picture to be shown, according to the first GTG of described pixel to be shown, determine the second GTG, and the driving signal that described the second GTG is corresponding is defined as be used to driving the driving signal of described pixel to be shown, the color saturation of described the second GTG is higher than the color saturation of described the first GTG, and described the second GTG is less than or equal to the high gray of colour gamut; According to this, determine respectively be used to driving the driving signal of each pixel;
According to the drive of determining, show corresponding pixel in picture to be shown.
A kind of image display device comprises:
The GTG determining unit, determine GTG separately for the demonstration information according to each pixel of picture to be shown self;
Drive the signal determining unit, for each pixel to be shown for described picture to be shown, according to the first GTG of described pixel to be shown, determine the second GTG, and the driving signal that described the second GTG is corresponding is defined as be used to driving the driving signal of described pixel to be shown, the color saturation of described the second GTG is higher than the color saturation of described the first GTG, and described the second GTG is less than or equal to the high gray of colour gamut; According to this, determine respectively be used to driving the driving signal of each pixel;
Drive display unit, show the corresponding pixel of picture to be shown for the drive according to determining.
In the embodiment of the present invention, when showing picture to be shown, for each pixel to be shown in picture to be shown, second GTG corresponding with the first GTG higher than described pixel to be shown shows described pixel to be shown, and wherein the color saturation of the second GTG is greater than the color saturation of the first GTG; Therefore, can realize not changing on the whole in the situation of transmitance and color film color blocking, improve the color saturation of image, realize larger colour gamut.
The accompanying drawing explanation
Fig. 1 is the schematic diagram of the colour gamut that realizes in prior art;
Fig. 2 shows the method flow diagram of image in the embodiment of the present invention;
Fig. 3 is the schematic diagram of the colour gamut that realizes in the embodiment of the present invention;
Fig. 4 shows the structural representation of the device of image in the embodiment of the present invention.
Embodiment
For the above-mentioned technical matters that prior art exists, the embodiment of the present invention provides a kind of method for displaying image and device.Method for displaying image can comprise: determine GTG separately according to the demonstration information of each pixel in picture to be shown self; For each pixel to be shown in described picture to be shown, according to the first GTG of described pixel to be shown, determine the second GTG, and the driving signal that described the second GTG is corresponding is defined as be used to driving the driving signal of described pixel to be shown, the color saturation of described the second GTG is higher than the color saturation of described the first GTG, and described the second GTG is less than or equal to the high gray of colour gamut; According to this, determine respectively be used to driving the driving signal of each pixel; According to the drive of determining, show corresponding pixel in picture to be shown.Adopt technical solution of the present invention, due to when showing picture to be shown, for each pixel to be shown in picture to be shown, second GTG corresponding with the first GTG higher than described pixel to be shown shows described pixel to be shown, wherein the color saturation of the second GTG is greater than the color saturation of the first GTG, thereby realized not changing on the whole in the situation of transmitance and color film color blocking, improved the color saturation of image, realized larger colour gamut.
Below in conjunction with Figure of description, technical solution of the present invention is described in detail.
Referring to Fig. 2, be the method flow diagram that image in the embodiment of the present invention shows, this flow process comprises:
The drive that step 203, basis are determined shows corresponding pixel in picture to be shown.
Preferably, between step 201 in above-mentioned flow process and step 202, also can comprise step: judge in described picture to be shown and whether have GTG to be greater than the pixel of the first GTG threshold value of setting, and determine again according to judged result the second GTG that each pixel is corresponding, described the first GTG threshold value is less than or equal to the high gray N of colour gamut.
Preferably, in above-mentioned steps 202, determine again according to judged result the second GTG that each pixel is corresponding, any one in specifically can be in the following ways:
Mode one, GTG in described picture to be shown is less than or equal to the pixel of described the first GTG threshold value, is defined as first group of pixel; The pixel that GTG in described picture to be shown is greater than to described the first GTG threshold value is defined as second group of pixel; For each pixel to be shown in described first group of pixel, according to the GTG transformational relation arranged, determine second GTG corresponding with the first GTG of described pixel to be shown; For described second group of pixel, determine the pixel of GTG maximum in described second group of pixel, the GTG of the pixel of described GTG maximum is M; Described colour gamut is reclassified as to M GTG, and will repartition more much higher GTG in the colour gamut of GTG and be defined as respectively second GTG corresponding with the first GTG of a plurality of pixels in described second group of pixel, described a plurality of GTGs according to from low to high order one by one corresponding to GTG a plurality of pixels from low to high;
If while in the described picture to be shown of mode two, existing GTG to be greater than the pixel of described the first GTG threshold value, according to the GTG of the pixel of GTG value maximum in described picture to be shown, described colour gamut is repartitioned to GTG, and, according to the GTG after repartitioning, determine second GTG corresponding with the first GTG of each pixel;
If while in described picture to be shown, not existing GTG to be greater than the pixel of described the first GTG threshold value, according to the GTG transformational relation arranged, determine second GTG corresponding with the first GTG of described pixel to be shown.
Described colour gamut is repartitioned to GTG, comprising: described colour gamut is reclassified as to M GTG, and M is the GTG corresponding to pixel of GTG value maximum in described image to be displayed; According to the GTG after repartitioning, determine second GTG corresponding with the first GTG of each pixel, comprise: for each pixel to be shown in described picture to be shown, the GTG identical with the first GTG of described pixel to be shown in the colour gamut of repartitioning after GTG is defined as to the second GTG of this pixel to be shown.
For ease of technical solution of the present invention is carried out to detailed understanding, below with a concrete example, be described in detail, if the GTG of sub-pix can comprise 1～256 GTG, namely comprise 256 GTGs, the first GTG threshold value setting is 200 (color saturation that is the 256th GTG in the little triangle of colour gamut 1-shown in Figure 3 is identical with the 200th GTG color saturation in the large triangle of colour gamut 2-, and the first GTG threshold value is 200 GTGs); Suppose in picture to be shown altogether to comprise 20 pixels, can be divided into two kinds of situations for the demonstration information of these 20 pixels: the first situation, the color saturation in the demonstration information of 20 pixels all is less than the first GTG threshold value 200; In the demonstration information of 20 pixels of the second situation, the color saturation of some is greater than the first GTG threshold value 200, as the GTG of 16 pixels wherein be less than 200 (GTG of these 16 pixels be respectively X1, X2 ..., X16), the GTG of all the other 4 pixels is greater than 200 (GTG of these 4 pixels is respectively Y1, Y2, Y3, Y4, and Y1<Y3<Y4<Y2 GTG value maximum).
For the first situation: the color saturation in the demonstration information of 20 pixels all is less than the first GTG threshold value 200, and the little leg-of-mutton picture to be shown of colour gamut 1-can be realized the large leg-of-mutton color saturation of colour gamut 2-so; Driving by high gray makes the color saturation of the pixel in the little triangle of colour gamut 1-reach the large leg-of-mutton real effect of colour gamut 2-, the color saturation of leg-of-mutton 100 GTGs as large as colour gamut 2-equals 110 GTGs in the little triangle of colour gamut 1-, can adopt 110 gray scale voltages in the little triangle of colour gamut 1-to drive and show that in picture to be shown, demonstration information is the pixel of 100 GTGs.)
In the second situation: have 4 GTGs to be greater than the pixel of threshold value 200, for each pixel in this 4 each pixel, can adopt the large leg-of-mutton color saturation of infinite approach colour gamut 2-to show this pixel, (Y2 is the highest pixel of color saturation in picture to be shown to specific implementation in order described colour gamut is reclassified as to Y2 GTG, now the little leg-of-mutton high gray of colour gamut 1-is not just 256 rank, but Y2 rank), and the driving signal of the identical GTG of the GTG with in this pixel demonstration information obtained that adopts colour gamut to repartition shows this pixel.
Adopt image display pattern provided by the invention, in the situation that do not change color film color blocking and transmittance, can improve the color saturation of image, reach larger colour gamut, as shown in Figure 3, the little triangle of colour gamut 1-in Fig. 3 is the colour gamut that can realize in prior art, and the large triangle of colour gamut 2-is the achieved colour gamut of technical solution of the present invention.
Based on the identical design of said method flow process, the embodiment of the present invention also can provide a kind of image display device, and the structure of this device can be as shown in Figure 4.
Referring to Fig. 4, be the structural representation of image display device in the embodiment of the present invention, this device comprises:
GTG determining unit 41, determine GTG separately for the demonstration information according to each pixel of picture to be shown self.
Drive signal determining unit 42, for each pixel to be shown for described picture to be shown, according to the first GTG of described pixel to be shown, determine the second GTG, and the driving signal that described the second GTG is corresponding is defined as be used to driving the driving signal of described pixel to be shown, the color saturation of described the second GTG is higher than the color saturation of described the first GTG, and described the second GTG is less than or equal to the high gray of colour gamut; According to this, determine respectively be used to driving the driving signal of each pixel.
Drive display unit 43, show the corresponding pixel of picture to be shown for the drive of determining according to driving signal determining unit 42.
Preferably, said apparatus also can comprise:
Judging unit 44, after in GTG determining unit 41, determining the GTG of each pixel of picture to be shown, judge in described picture to be shown and whether have GTG to be greater than the pixel of the first GTG threshold value of setting, and start driving signal determining unit 42 according to judged result, described the first GTG threshold value is less than or equal to the high gray of colour gamut.
Preferably, drive signal determining unit 42, specifically can realize in following two kinds of modes wherein any one:
Mode one, GTG in described picture to be shown is less than or equal to the pixel of described the first GTG threshold value, is defined as first group of pixel; The pixel that GTG in described picture to be shown is greater than to described the first GTG threshold value is defined as second group of pixel; For each pixel to be shown in described first group of pixel, according to the GTG transformational relation arranged, determine second GTG corresponding with the first GTG of described pixel to be shown; For described second group of pixel, determine the pixel of GTG maximum in described second group of pixel, the GTG of the pixel of described GTG maximum is M; Described colour gamut is reclassified as to M GTG, and will repartition more much higher GTG in the colour gamut of GTG and be defined as respectively second GTG corresponding with the first GTG of a plurality of pixels in described second group of pixel, described a plurality of GTGs according to from low to high order one by one corresponding to GTG a plurality of pixels from low to high;
If while in the described picture to be shown of mode two, existing GTG to be greater than the pixel of described the first GTG threshold value, according to the GTG of the pixel of GTG value maximum in described picture to be shown, described colour gamut is repartitioned to GTG, and, according to the GTG after repartitioning, determine second GTG corresponding with the first GTG of each pixel; If while in described picture to be shown, not existing GTG to be greater than the pixel of described the first GTG threshold value, according to the GTG transformational relation arranged, determine second GTG corresponding with the first GTG of described pixel to be shown.
Preferably, 42 pairs of described colour gamuts of above-mentioned driving signal determining unit are repartitioned GTG, specifically for: described colour gamut is reclassified as to M GTG, and described M is the GTG corresponding to pixel of GTG value maximum in described image to be displayed; Drive signal determining unit 42, specifically for: according to the GTG after repartitioning, determine second GTG corresponding with the first GTG of each pixel, comprise: for each pixel to be shown in described picture to be shown, the GTG identical with the first GTG of described pixel to be shown in the colour gamut of repartitioning after GTG is defined as to the second GTG of this pixel to be shown.
In the embodiment of the present invention, when showing picture to be shown, for each pixel to be shown in picture to be shown, with the second GTG corresponding to the first GTG higher than described pixel to be shown (wherein, the color saturation of the second GTG is greater than the color saturation of the first GTG) show described pixel to be shown, therefore, can realize not changing on the whole in the situation of transmitance and color film color blocking, improve the color saturation of image, realize larger colour gamut.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.
Claims (6)
1. a method for displaying image, is characterized in that, comprising:
According to the demonstration information of each pixel in picture to be shown self, determine GTG separately;
Judge in described picture to be shown the pixel that whether has GTG to be greater than the first GTG threshold value of setting, described the first GTG threshold value is less than or equal to the high gray of colour gamut;
GTG in described picture to be shown is less than or equal to the pixel of described the first GTG threshold value, is defined as first group of pixel; The pixel that GTG in described picture to be shown is greater than to described the first GTG threshold value is defined as second group of pixel;
For each pixel to be shown in described first group of pixel, according to the GTG transformational relation arranged, determine second GTG corresponding with the first GTG of described pixel to be shown;
For described second group of pixel, determine the pixel of GTG maximum in described second group of pixel, the GTG of the pixel of described GTG maximum is M; Described colour gamut is reclassified as to M GTG, and will repartition more much higher GTG in the colour gamut of GTG and be defined as respectively second GTG corresponding with the first GTG of a plurality of pixels in described second group of pixel, described a plurality of GTGs according to from low to high order one by one corresponding to GTG a plurality of pixels from low to high;
The driving signal that described the second GTG is corresponding is defined as be used to driving the driving signal of described pixel to be shown, and the color saturation of described the second GTG is higher than the color saturation of described the first GTG, and described the second GTG is less than or equal to the high gray of colour gamut; According to this, determine respectively be used to driving the driving signal of each pixel;
According to the drive of determining, show corresponding pixel in picture to be shown.
2. a method for displaying image, is characterized in that, comprising:
According to the demonstration information of each pixel in picture to be shown self, determine GTG separately;
Judge in described picture to be shown the pixel that whether has GTG to be greater than the first GTG threshold value of setting, described the first GTG threshold value is less than or equal to the high gray of colour gamut;
If while in described picture to be shown, existing GTG to be greater than the pixel of described the first GTG threshold value, according to the GTG of the pixel of GTG value maximum in described picture to be shown, described colour gamut is repartitioned to GTG, and, according to the GTG after repartitioning, determine second GTG corresponding with the first GTG of each pixel;
If while in described picture to be shown, not existing GTG to be greater than the pixel of described the first GTG threshold value, according to the GTG transformational relation arranged, determine second GTG corresponding with the first GTG of pixel to be shown;
The driving signal that described the second GTG is corresponding is defined as be used to driving the driving signal of described pixel to be shown, and the color saturation of described the second GTG is higher than the color saturation of described the first GTG, and described the second GTG is less than or equal to the high gray of colour gamut; According to this, determine respectively be used to driving the driving signal of each pixel;
According to the drive of determining, show corresponding pixel in picture to be shown.
3. method as claimed in claim 2, is characterized in that, described colour gamut is repartitioned to GTG, comprising: described colour gamut is reclassified as to M GTG, and described M is the GTG corresponding to pixel of GTG value maximum in described picture to be shown;
According to the GTG after repartitioning, determine second GTG corresponding with the first GTG of each pixel, comprise: for each pixel to be shown in described picture to be shown, the GTG identical with the first GTG of described pixel to be shown in the colour gamut of repartitioning after GTG is defined as to the second GTG of this pixel to be shown.
4. an image display device, is characterized in that, comprising:
The GTG determining unit, determine GTG separately for the demonstration information according to each pixel of picture to be shown self;
Whether judging unit, have GTG to be greater than the pixel of the first GTG threshold value of setting for judging described picture to be shown, and described the first GTG threshold value is less than or equal to the high gray of colour gamut;
Drive the signal determining unit, for described picture GTG to be shown being less than or equal to the pixel of described the first GTG threshold value, be defined as first group of pixel; The pixel that GTG in described picture to be shown is greater than to described the first GTG threshold value is defined as second group of pixel; For each pixel to be shown in described first group of pixel, according to the GTG transformational relation arranged, determine second GTG corresponding with the first GTG of described pixel to be shown; For described second group of pixel, determine the pixel of GTG maximum in described second group of pixel, the GTG of the pixel of described GTG maximum is M; Described colour gamut is reclassified as to M GTG, and will repartition more much higher GTG in the colour gamut of GTG and be defined as respectively second GTG corresponding with the first GTG of a plurality of pixels in described second group of pixel, described a plurality of GTGs according to from low to high order one by one corresponding to GTG a plurality of pixels from low to high; The driving signal that described the second GTG is corresponding is defined as be used to driving the driving signal of described pixel to be shown, and the color saturation of described the second GTG is higher than the color saturation of described the first GTG, and described the second GTG is less than or equal to the high gray of colour gamut; According to this, determine respectively be used to driving the driving signal of each pixel;
Drive display unit, show the corresponding pixel of picture to be shown for the drive of determining according to described driving signal determining unit.
5. an image display device, is characterized in that, comprising:
The GTG determining unit, determine GTG separately for the demonstration information according to each pixel of picture to be shown self;
Whether judging unit, have GTG to be greater than the pixel of the first GTG threshold value of setting for judging described picture to be shown, and described the first GTG threshold value is less than or equal to the high gray of colour gamut;
Drive the signal determining unit, if while for described picture to be shown, existing GTG to be greater than the pixel of described the first GTG threshold value, according to the GTG of the pixel of GTG value maximum in described picture to be shown, described colour gamut is repartitioned to GTG, and, according to the GTG after repartitioning, determine second GTG corresponding with the first GTG of each pixel; If while in described picture to be shown, not existing GTG to be greater than the pixel of described the first GTG threshold value, according to the GTG transformational relation arranged, determine second GTG corresponding with the first GTG of pixel to be shown; The driving signal that described the second GTG is corresponding is defined as be used to driving the driving signal of described pixel to be shown, and the color saturation of described the second GTG is higher than the color saturation of described the first GTG, and described the second GTG is less than or equal to the high gray of colour gamut; According to this, determine respectively be used to driving the driving signal of each pixel;
Drive display unit, show the corresponding pixel of picture to be shown for the drive of determining according to described driving signal determining unit.
6. device as claimed in claim 5, it is characterized in that, described driving signal determining unit is repartitioned GTG to described colour gamut, specifically for: described colour gamut is reclassified as to M GTG, and described M is the GTG corresponding to pixel of GTG value maximum in described picture to be shown;
Described driving signal determining unit, specifically for:
According to the GTG after repartitioning, determine second GTG corresponding with the first GTG of each pixel, comprise: for each pixel to be shown in described picture to be shown, the GTG identical with the first GTG of described pixel to be shown in the colour gamut of repartitioning after GTG is defined as to the second GTG of this pixel to be shown.
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| CN102968943B (en) * | 2012-11-08 | 2015-06-10 | 京东方科技集团股份有限公司 | Generating method of gama value test card of display device and measuring method of gama value |
| CN104732952B (en) * | 2013-12-23 | 2017-08-11 | 昆山国显光电有限公司 | Color displays processing method and system |
| CN104200792B (en) * | 2014-08-20 | 2017-02-15 | 青岛海信电器股份有限公司 | Method and apparatus for positioning gray scale image region during medical image displaying |
| CN104658504B (en) * | 2015-03-09 | 2017-05-10 | 深圳市华星光电技术有限公司 | Driving method and driving device of liquid crystal display |
| TWI588814B (en) * | 2016-08-18 | 2017-06-21 | 友達光電股份有限公司 | Driving method of pixel |
| CN107591138B (en) * | 2017-09-18 | 2020-05-08 | 青岛海信电器股份有限公司 | Content display method and device |
| CN107863086B (en) * | 2017-12-20 | 2019-07-26 | 惠科股份有限公司 | Display device and driving method thereof |
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| CN1613089A (en) * | 2001-11-05 | 2005-05-04 | 夏普株式会社 | Color image processing method, color image processor, color display, computer program for implementing the color image processing method |
| CN101543039A (en) * | 2006-11-23 | 2009-09-23 | 皇家飞利浦电子股份有限公司 | Gamut adaptation |
| CN101714340A (en) * | 2008-09-29 | 2010-05-26 | 株式会社瑞萨科技 | Display drive circuit |
| CN102044230A (en) * | 2010-12-31 | 2011-05-04 | 昆山龙腾光电有限公司 | Liquid crystal display device, color gamut conversion method thereof and color gamut conversion circuit |
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| JPH08329217A (en) * | 1995-06-05 | 1996-12-13 | Seiko Epson Corp | Image saturation conversion method and image saturation conversion device |
| WO2010131500A1 (en) * | 2009-05-15 | 2010-11-18 | シャープ株式会社 | Image processing device and image processing method |
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| CN1613089A (en) * | 2001-11-05 | 2005-05-04 | 夏普株式会社 | Color image processing method, color image processor, color display, computer program for implementing the color image processing method |
| CN101543039A (en) * | 2006-11-23 | 2009-09-23 | 皇家飞利浦电子股份有限公司 | Gamut adaptation |
| CN101714340A (en) * | 2008-09-29 | 2010-05-26 | 株式会社瑞萨科技 | Display drive circuit |
| CN102044230A (en) * | 2010-12-31 | 2011-05-04 | 昆山龙腾光电有限公司 | Liquid crystal display device, color gamut conversion method thereof and color gamut conversion circuit |
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