CN105513559A - Image processing method and display device - Google Patents

Image processing method and display device Download PDF

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Publication number
CN105513559A
CN105513559A CN201610082366.7A CN201610082366A CN105513559A CN 105513559 A CN105513559 A CN 105513559A CN 201610082366 A CN201610082366 A CN 201610082366A CN 105513559 A CN105513559 A CN 105513559A
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image
displayed
gtg
making
grey decision
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CN105513559B (en
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刁玉洁
杨�嘉
黄顺明
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Hisense Visual Technology Co Ltd
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Qingdao Hisense Electronics Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/147—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The invention provides an image processing method and a display device. The method comprises the steps that a first gray scale and proportion information of each primary color in an image to be displayed are determined, and the adjustment coefficient is determined according to the gray scale proportion, so that according to the product of the adjustment coefficient and the first gray scale, a second gray scale of each primary color is finally determined and displayed, and gray scales of the image to be displayed are adjusted accordingly. In the adjustment process, the proportion of green is made to be in inverse correlation with the gray scales of the image to be displayed, and the proportion of blue is made to be in positive correlation with the gray scales of the image to be displayed, so that gray scales of green pixels in the same image to be displayed are decreased, the gray scales of blue pixels are increased, and the display status of the image to be displayed can meet requirements of human eyes.

Description

A kind of image processing method and display device
Technical field
The present invention relates to image display technology field, particularly relate to a kind of image processing method and display device.
Background technology
Liquid crystal display (Liquidcrystaldisplay, LCD), through the development of 30 years, has become the mainstream technology of flat pannel display.Liquid crystal molecule itself is not luminous, and the backlight usually by sending the light with certain GTG illuminates viewing area.The backlight of the LCD of current use mainly contains cold-cathode fluorescence lamp (coldcathodeFluorescent, and light emitting diode (LightEmittingdiode CCFL), LED) two kinds, and LED has the advantages such as life-span length, environmental protection, response time be fast, just progressively expands in the application of field of liquid crystal display.
In order to improve the contrast of liquid crystal display, and reducing energy consumption, in prior art, usually adopting backlight dynamic light adjustment technology.But in the process of carrying out dynamic light adjustment, by monochrome information in the picture signal of acquisition respective regions, carry out the adjustment of backlight value according to above-mentioned monochrome information.
Inventor finds, if a certain image is blue sky and green meadow in display screen, and region, blue sky is identical with the monochrome information that region, green meadow comprises in the picture signal of input, the then corresponding same display brightness of the image in region, blue sky and region, green meadow, but the blue sky that human eye is seen can be darker than the meadow of green.Therefore, need a kind of image processing method and device badly, for solving the problem.
Summary of the invention
The embodiment of the present invention provides image processing method and display device, by adjusting the grey decision-making of image to be displayed, achieves human eye to green and blue sense organ consistance.
The invention provides a kind of image processing method, comprising: the first grey decision-making obtaining each primary colours in image to be displayed, and the GTG accounting of each primary colours; According to the GTG accounting of described each primary colours, and the first preset function determination GTG regulation coefficient, wherein, first preset function is the function of GTG regulation coefficient and each primary colours GTG accounting, be configured to make GTG regulation coefficient, reduce with the increase of green GTG accounting, increase with the increase of blue GTG accounting; According to the first grey decision-making of primary colours each described in image to be displayed and the product of described GTG regulation coefficient, determine the second grey decision-making of each primary colours in image to be displayed; The output of image to be displayed is carried out according to the second grey decision-making of primary colours each described in image to be displayed.
Present invention also offers a kind of display device, comprise the first determining unit, described first determining unit is configured to the first grey decision-making obtaining each primary colours in image to be displayed, and the GTG accounting of each primary colours; Second determining unit, described second determining unit is configured to the GTG accounting according to described each primary colours, and the first preset function determination GTG regulation coefficient, wherein said first preset function is the function of GTG regulation coefficient and each primary colours GTG accounting, be configured to make GTG regulation coefficient, reduce with the increase of green GTG accounting, increase with the increase of blue GTG accounting; GTG adjustment unit, described GTG adjustment unit is configured to the product of the first grey decision-making according to primary colours each in described image to be displayed and described GTG regulation coefficient, determines the second grey decision-making of each primary colours in image to be displayed; Output unit, described output unit is configured to export image to be displayed to display panel according to the second grey decision-making of primary colours each in described image to be displayed.
By determining the first GTG and the accounting information of each primary colours in image to be displayed in the application, and go to determine regulation coefficient according to GTG accounting, finally determine that the second GTG of each primary colours shows according to the product of regulation coefficient and the first GTG, namely have adjusted the GTG of image to be displayed, green accounting and image to be displayed GTG is made to be inverse correlation in process due to adjustment, the GTG of blue accounting and image to be displayed is proportionate, thus the GTG of the green pixel in same width image to be displayed is reduced, the GTG of blue pixel increases, the display state of image to be displayed is made to meet the demand of human eye.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly introduced, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of form of the image to be displayed in the embodiment of the present invention;
Fig. 2 is the another kind of form of image to be displayed in the embodiment of the present invention;
Fig. 3 is the process flow diagram of image processing method in the embodiment of the present invention;
Fig. 4 is the Organization Chart that the embodiment of the present invention gathers display device.
Embodiment
In order to make object of the present invention, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment one
The present embodiment is applicable to the liquid crystal indicator adopting display panels.In embodiments of the present invention, image to be displayed can be a whole frame of video 201 as shown in Figure 2, that is, can carry out the process of image to whole frame of video; In another scenario, also can be a certain picture portion of frame of video to be shown as shown in Figure 1, now, the size of picture portion and position can pre-set, and also can carry out subregion based on graphical analysis to image, for front a kind of picture portion mode, in each frame of video of input, the size of picture portion and position are identical, and in rear a kind of mode, picture portion can change along with the difference of picture material in the frame of video of input.In the following embodiments, we are with in liquid crystal indicator, and pending image is that the situation of picture portion in a frame of video explains technical scheme of the present invention, and wherein, the size of picture portion and position are what pre-set.
Comprise four picture portions in frame of video 101, each picture portion is all images to be displayed, comprises image to be displayed 1011, image to be displayed 1012, image to be displayed 1013, image to be displayed 1014.For example, if image to be displayed 1011 is pure blue images, image to be displayed 1012 is pure green images, and image to be displayed 1013 is pure red images, and image to be displayed 1014 is combination pictures that a width comprises redgreenblue.If the gray level information that comprises of each subregion of this frame of video is identical in the input signal, described gray level information is for characterizing the output brightness of image to be displayed.In liquid crystal indicator, now image to be displayed 1011, image to be displayed 1012, image to be displayed 1013, backlight that the backlight subarea of image to be displayed 1014 correspondence is corresponding all provide identical backlight value, now, under the irradiation of white backlight with certain GTG, the image to be displayed of four picture portions shows, and its output brightness is identical.Owing to there being two kinds of photosensory cells in human eye retina, have different susceptibility to the light of different wave length, generally, human eye is the most responsive to green, and blueness is least responsive.Specifically, the wavelength of the visible ray of different colours is different, and blue wavelength is approximately 435.8nm, and green wavelength is approximately 546.1nm, and red wavelength is approximately 700nm.Visible, the light of human eye to green wavelength place wave band is the most responsive, the least sensitivity of blue wave band, so in the pure red image of same brightness output, pure green image and ethereal blue image, have identical backlight illumination, but the display brightness that human eye perceives is different, namely, for people, the display brightness of the ethereal blue image seen is the darkest, and the display brightness of pure green image is the brightest.That is, the picture part of image to be displayed 1011 correspondence gone out shown by the display screen that human eye is seen is darker.
For addressing this problem, the embodiment of the present invention provides following methods, before image display, the GTG of image is adjusted, under Fig. 1 illustrated embodiment, needs to determine the grey decision-making that image to be displayed in this liquid crystal indicator is corresponding, determine the accounting of the redgreenblue in image to be displayed simultaneously, according to accounting and the default weight of redgreenblue in image to be displayed, the GTG of adjustment image to be displayed, then exports the image after adjustment GTG.
Carrying out exporting according to the GTG of image to be displayed and showing is the prior art of this area, carrying out subregion to the frame of video exported also is prior art, for example, one picture frame is divided into four parts of picture portions after input, each subregion is an image to be displayed, display device can go according to the grey decision-making of each image to be displayed the backlight value of determining that this image to be displayed is corresponding, and drives back light according to this backlight value, and back light sends backlight corresponding with it according to this backlight value.
Fig. 3 illustrates a kind of schematic flow sheet of image processing method.
Based on foregoing teachings, a kind of image processing method that the embodiment of the present invention provides, is applicable to liquid crystal indicator, comprises the following steps:
Step 301, obtains the first grey decision-making of each primary colours in image to be displayed, and the GTG accounting of each primary colours;
Step 302, according to the GTG accounting of each primary colours, and the first preset function determination GTG regulation coefficient, wherein the first preset function is the function of GTG regulation coefficient and each primary colours GTG accounting, to make GTG regulation coefficient, reduce with the increase of green GTG accounting, increase with the increase of blue GTG accounting;
Step 303, according to the first grey decision-making of primary colours each in image to be displayed and the product of GTG regulation coefficient, determines the second grey decision-making of each primary colours in image to be displayed;
Step 304, carries out the output of image to be displayed according to the second grey decision-making of primary colours each in image to be displayed.
Further, treat that the brightness of the first grey decision-making also for controlling backlight of each primary colours in image to be displayed exports.
In above-mentioned steps 301, obtain the first grey decision-making of each primary colours in image to be displayed, and the GTG accounting of each primary colours.Concretely, situation as shown in Figure 1, frame of video is divided into 4 subregions, and all corresponding image to be displayed of each subregion, obtains the grey decision-making of each primary colours and the GTG accounting of each primary colours in image to be displayed.Because color is by red, green, blue three primary colours composition, therefore the gray level information of image to be displayed is made up of the gray level information of redness and the gray level information of green gray level information and blueness.
Concretely, obtain the first grey decision-making of each primary colours in image to be displayed, be specially:
Obtain the grey decision-making of the pixel in image to be displayed corresponding to each primary colours;
The grey decision-making of the described pixel corresponding to each primary colours, determines the first grey decision-making of each primary colours in image to be displayed.
Particularly, the grey decision-making of the described pixel corresponding to each primary colours, determines the first grey decision-making of each primary colours in image to be displayed.The embodiment of the present invention provides two kinds of modes:
Mode one, according to the grey decision-making of each pixel in all pixels that primary colours each in image to be displayed are corresponding, determine the first grey decision-making in image to be displayed, further the first grey decision-making of the first grey decision-making of redness corresponding for image to be displayed, the first green grey decision-making and blueness is all set to the first grey decision-making of the image to be displayed determined.
Mode two, according to the red grey decision-making of pixel each in image to be displayed, determines the first grey decision-making of redness corresponding in image to be displayed; According to the green grey decision-making of pixel each in image to be displayed, determine the first grey decision-making of green corresponding in image to be displayed; According to the blue grey decision-making of pixel each in image to be displayed, determine the first grey decision-making of blueness corresponding in image to be displayed.
In aforesaid way two, specifically, the overall grey decision-making of each pixel is made up of jointly red grey decision-making, green grey decision-making, blue grey decision-making, namely the red grey decision-making of each pixel in all pixels corresponding to image to be displayed, green grey decision-making and blue grey decision-making is obtained, and according to the red grey decision-making of sub-pixel point each in pixels all in image to be displayed, determine the first grey decision-making of the redness that image to be displayed is corresponding; And according to the green grey decision-making of each pixel in pixels all in image to be displayed, determine the first grey decision-making of the green that image to be displayed is corresponding; And according to the blue grey decision-making of each pixel in pixels all in image to be displayed, determine the first grey decision-making of the blueness that image to be displayed is corresponding.In mode two, the first grey decision-making of the first grey decision-making of the redness that the image to be displayed calculated in units of red grey decision-making, green grey decision-making, blue grey decision-making in single pixel is corresponding, the first green grey decision-making and blueness may be different.Owing to calculating in units of red grey decision-making, green grey decision-making, blue grey decision-making in single pixel in mode two, therefore more can go out the concrete condition of three primary colours in image to be displayed by accurate expression, thus lay the foundation for the degree of accuracy more improving backlight value.
In aforesaid way one or mode two, according to the grey decision-making of pixel each in image to be displayed, determine that the specific algorithm of the first grey decision-making of the first grey decision-making of the redness that image to be displayed is corresponding, the first green grey decision-making and blueness has multiple.Such as by the algorithm of the weighting summation of the algorithm of calculating mean value, calculating mean value and maximal value, or by root mean square algorithm etc., those skilled in the art can select voluntarily.With the algorithm of mean value in the embodiment of the present invention, and introduce for the algorithm of the weighting summation of mean value and maximal value, specifically, in this algorithm, each coefficient is conventional value, specifically can select according to the concrete scene that is suitable for, the embodiment of the present invention does not limit coefficient magnitude.
For the first grey decision-making of the redness corresponding by the algorithm determination image to be displayed of calculating mean value of aforesaid way one, the concrete steps of the first green grey decision-making and the first blue grey decision-making are: according to the mean value of the grey decision-making of all pixels corresponding to the grey decision-making determination image to be displayed of pixel each in image to be displayed, the mean value of the grey decision-making of all pixels that image to be displayed is corresponding is the first grey decision-making of red GTG corresponding to image to be displayed, the mean value of the grey decision-making of all pixels that image to be displayed is corresponding is the first grey decision-making of green corresponding to image to be displayed, the mean value of the grey decision-making of all pixels that image to be displayed is corresponding is the first grey decision-making of blueness corresponding to image to be displayed.
Concrete steps for the first grey decision-making of the first grey decision-making of the redness ash corresponding with the algorithm determination image to be displayed of the weighting summation of maximal value by calculating mean value of aforesaid way one, the first green grey decision-making and blueness are: the mean value calculating the pixel gray level value of all pixels in image to be displayed, by the mean value weighting summation of the maximal value in the pixel gray level value of pixels all in image to be displayed and pixel gray level value, obtain the 3rd grey decision-making that image to be displayed is corresponding; 3rd grey decision-making of the pixel that the image to be displayed being all set to determine by the first grey decision-making of the first grey decision-making of redness corresponding for image to be displayed, the first green grey decision-making and blueness is further corresponding.Specifically, by the mean value weighting summation of the maximal value in the pixel gray level value of pixels all in image to be displayed and pixel gray level value, concrete steps are, maximal value in the pixel gray level value of pixels all in image to be displayed is multiplied by the coefficient corresponding to the maximal value in the pixel gray level value of all pixels in image to be displayed, the mean value of the pixel gray level value of pixels all in image to be displayed is multiplied by the coefficient corresponding to mean value of the pixel gray level value of all pixels in image to be displayed, by two product addition obtained.
Lift an object lesson, example one, suppose to comprise 4 pixels in image to be displayed altogether, the grey decision-making of each pixel is as shown in table 1.
The concrete grey decision-making complete list of 4 pixels in table 1 example one
As can be seen from Table 1, the grey decision-making of the grey decision-making of first pixel to be the grey decision-making of 120, second pixel be the 160, three pixel is the grey decision-making of the 124, four pixel is 100.Calculate the mean value of the pixel gray level value of all pixels in image to be displayed, namely calculate the mean value of 120,160,124,100, in image to be displayed, the mean value of the grey decision-making of all pixels is 126.Further, obviously can find out that the maximal value in the pixel gray level value of all pixels in image to be displayed is 160.Further by the mean value weighting summation of the maximal value in the pixel gray level value of pixels all in image to be displayed and pixel gray level value, obtain the 3rd grey decision-making that image to be displayed is corresponding.Specifically, suppose that the coefficient of the maximal value in the pixel gray level value of all pixels in image to be displayed is c, in image to be displayed, the coefficient of the mean value of the pixel gray level value of all pixels is d, the coefficient d that the coefficient c of the maximal value that the 3rd grey decision-making that then image to be displayed is corresponding equals in the pixel gray level value of all pixels in image to be displayed is multiplied by the mean value of the pixel gray level value of all pixels in product and image to be displayed that the maximal value 160 in the pixel gray level value of all pixels in image to be displayed obtains is multiplied by the sum of products of the mean value 126 of the grey decision-making of all pixels in image to be displayed, i.e. (the 3rd grey decision-making that cx160+dx126=image to be displayed is corresponding).First grey decision-making of the first grey decision-making of the redness that this image to be displayed further is corresponding, the first green grey decision-making and blueness is all set to the 3rd grey decision-making of the image to be displayed determined.
Concrete steps for the first grey decision-making of the first grey decision-making of the redness corresponding by the algorithm determination image to be displayed of calculating mean value of aforesaid way two, the first green grey decision-making and blueness are: the mean value calculating the red grey decision-making of all pixels in image to be displayed, obtains the first grey decision-making of redness corresponding to image to be displayed; Calculate the mean value of the green grey decision-making of all pixels in image to be displayed, obtain the first grey decision-making of green corresponding to image to be displayed; Calculate the mean value of the blue grey decision-making of all pixels in image to be displayed, obtain the first grey decision-making of blueness corresponding to image to be displayed.
Concrete steps for the first grey decision-making of the first grey decision-making of the redness corresponding with the algorithm determination image to be displayed of the weighting summation of maximal value by calculating mean value of aforesaid way two, the first green grey decision-making and blueness are: the mean value calculating the red grey decision-making of all pixels in image to be displayed, by the mean value weighting summation of the maximal value in the red grey decision-making of pixels all in image to be displayed and red grey decision-making, obtain the first grey decision-making of redness corresponding to image to be displayed; Calculate the mean value of the green grey decision-making of all pixels in image to be displayed, by the mean value weighting summation of the maximal value in the green grey decision-making of pixels all in image to be displayed and green grey decision-making, obtain the first grey decision-making of green corresponding to image to be displayed; Calculate the mean value of the blue grey decision-making of all pixels in image to be displayed, by the mean value weighting summation of the maximal value in the blue grey decision-making of pixels all in image to be displayed and blue grey decision-making, obtain the first grey decision-making of blueness corresponding to image to be displayed.Below for a specific example in order to describe in detail.
Specifically, the grey decision-making of each pixel is by red grey decision-making, green grey decision-making, blue grey decision-making composition.Lift an object lesson, example two, suppose to comprise 4 pixels in image to be displayed altogether, the grey decision-making of each pixel is as shown in table 2.
The concrete grey decision-making complete list of 4 pixels in table 2 example two
Associative list 2, is described in detail 2 for the first grey decision-making of the blueness of all pixels, and computation process and the blueness of green and redness are similar, are not repeating at this.As can be seen from Table 2, the blue grey decision-making of the blue grey decision-making of first pixel to be the blue grey decision-making of 120, second pixel be the 130, three pixel is the grey decision-making of the 75, four pixel is 55.Calculate the mean value of the blue grey decision-making of all pixels in image to be displayed, namely calculate the mean value of 120,130,75,55, in image to be displayed, the mean value of the blue grey decision-making of all pixels is 95.Further, obviously can find out that the maximal value in the blue grey decision-making of all pixels in image to be displayed is 130.Further by the mean value weighting summation of the maximal value in the blue grey decision-making of pixels all in image to be displayed and blue grey decision-making, obtain the first grey decision-making of blueness corresponding to image to be displayed.Specifically, suppose that the coefficient of the maximal value in the blue grey decision-making of all pixels in image to be displayed is c, in image to be displayed, the coefficient of the mean value of the blue grey decision-making of all pixels is d, the coefficient d that the coefficient c that first grey decision-making of the blueness that then image to be displayed is corresponding equals the maximal value in the blue grey decision-making of all pixels in image to be displayed is multiplied by the mean value of the blue grey decision-making of all pixels in product and image to be displayed that the maximal value 130 in the blue grey decision-making of all pixels in image to be displayed obtains is multiplied by the sum of products of the mean value 95 of the grey decision-making of all pixels in image to be displayed, i.e. the blue grey decision-making of all pixels (in the cx130+dx95=image to be displayed).Similarly with this process further to calculate the red grey decision-making of all pixels (in the cx100+dx80=image to be displayed) and the green grey decision-making of all pixels (in the cx60+dx40=image to be displayed).Example two all can customize with the value of coefficient c and d in example one, and the embodiment of the present invention does not limit, and for setting forth conveniently, the invention process continues to use coefficient c and d supposed in example one in example two.
Concretely, obtain the GTG accounting of each primary colours, be specially:
Obtain the GTG accounting of each primary colours corresponding to image to be displayed, i.e. red GTG accounting, green GTG accounting and blue GTG accounting.This step can walk abreast with the first grey decision-making obtaining each primary colours.Such as, after the grey decision-making getting the pixel corresponding to each primary colours in image to be displayed, parallel the first grey decision-making and the GTG accounting determining each primary colours.Carry out while on described parallel not temporal meaning, but two processing threads is parallel.In another embodiment, this step can with the first grey decision-making serial obtaining each primary colours, namely, on the basis of the grey decision-making of the pixel corresponding to each primary colours of the image to be displayed acquired, the first grey decision-making of each primary colours and the GTG accounting of each primary colours can successively be obtained.The embodiment of the present invention is not specifically limited this step.
Above-mentionedly determine that the concrete calculation procedure of the red GTG accounting that image to be displayed is corresponding, green GTG accounting and blue GTG accounting is: according to formula determine the red GTG accounting R that image to be displayed is corresponding, green GTG accounting G and blue GTG accounting B respectively; Wherein, R 1for the red grey decision-making sum of pixels all in image to be displayed, G 1for the green grey decision-making sum of pixels all in image to be displayed, B 1for the blue grey decision-making sum of pixels all in image to be displayed.Specifically, the red grey decision-making sum R of all pixels in image to be displayed is first calculated 1, the green grey decision-making sum G of all pixels in image to be displayed 1and the blue grey decision-making sum B of all pixels in image to be displayed 1, the red GTG accounting R that image to be displayed is corresponding is the green GTG accounting G that image to be displayed is corresponding is the blue GTG accounting B that image to be displayed is corresponding is
For blue GTG accounting, and the data in associative list 2, elaborate computation process, calculate the red grey decision-making sum R of all pixels in image to be displayed 1be 320, the green grey decision-making sum G of all pixels in image to be displayed 1be 160, the blue grey decision-making sum B of all pixels in image to be displayed 1be 380, basis further the blue GTG accounting B calculating image to be displayed corresponding is about 44.2%.Adopt similar algorithm, calculating red GTG accounting is 37.2%, and green GTG accounting is 18.6%.
In addition, the another kind of algorithm of GTG accounting is that the quantity of pixel by calculating each primary colours obtains.Such as, by judging that the grey decision-making corresponding to each primary colours exceedes the pixel number of predetermined threshold value, the ratio of the pixel number of predetermined threshold value is exceeded with grey decision-making used.
In step 302, according to the GTG accounting of each primary colours, and the first preset function determination GTG regulation coefficient, wherein the first preset function is the function of GTG regulation coefficient and each primary colours GTG accounting, to make GTG regulation coefficient, reduce with the increase of green GTG accounting, increase with the increase of blue GTG accounting.
After calculating red GTG accounting corresponding to image to be displayed, green GTG accounting and blue GTG accounting, in conjunction with the GTG regulation coefficient of the first function determination image to be displayed preset, first preset function is the function corresponding relation formula of GTG regulation coefficient and each primary colours GTG accounting, GTG regulation coefficient for making reduces along with the increase of green GTG accounting, increases with the increase of blue GTG accounting.Reduce the GTG of image when the green accounting in image to be displayed therefore can be made more, and then reduce the output brightness of image, the display brightness that human eye is got reduces, and alleviates the defect that green more picture brightness is excessively bright; Promote the GTG of image when blue accounting in image to be displayed is more, and then promote the output brightness of image, the display brightness that human eye is got increases, and alleviates the defect that blue more picture brightness is excessively dark.
Further, the initial value of GTG regulation coefficient is that the 1, first preset function is configured to, and when green GTG accounting is greater than blue GTG accounting, GTG regulation coefficient is less than 1, and reduces with the increase of green GTG accounting; When green GTG accounting is less than blue GTG accounting, GTG regulation coefficient is greater than 1, and increases with the increase of blue GTG accounting
Further, be greater than when 50% in green GTG accounting, GTG regulation coefficient is greater than 1; Be greater than when 50% in blue GTG accounting, GTG regulation coefficient is less than 1;
Further, GTG regulation coefficient is greater than 0.5 and is less than 1.5, preferably, during GTG regulation coefficient interval [0.8,1.2].
Further, separately make GTG regulation coefficient be n, then the form of the first function preset is n=f (R, G, B), wherein, R, G, B are respectively red GTG accounting, green GTG accounting, blue GTG accounting.The first function preset can be formed by debug results matching.
In step 303, according to the first grey decision-making of primary colours each in image to be displayed and the product of GTG regulation coefficient, the second grey decision-making of each primary colours in image to be displayed is determined.
In step 304, the output of image to be displayed is carried out according to the second grey decision-making of primary colours each in image to be displayed.
In this application, in conjunction with the GTG regulation coefficient of the first function determination image to be displayed preset, first preset function is the function corresponding relation formula of GTG regulation coefficient and each primary colours GTG accounting, GTG regulation coefficient for making reduces along with the increase of green GTG accounting, increases with the increase of blue GTG accounting.Reduce the GTG of image when the green accounting in image to be displayed therefore can be made more, and then reduce the output brightness of image, the display brightness that human eye is got reduces, and alleviates the defect that green more picture brightness is excessively bright; Promote the GTG of image when blue accounting in image to be displayed is more, and then promote the output brightness of image, the display brightness that human eye is got increases, and alleviates the defect that blue more picture brightness is excessively dark.
Further, the backlight value of liquid crystal indicator is determined according to the first grey decision-making of each primary colours.Therefore because backlight value is determined according to the first grey decision-making, therefore on the basis of above-mentioned backlight value, adjust the display GTG of image, by reduce and or promote the GTG of blue pixel, solve the blueness that human eye existing in prior art receives partially dark, green partially bright problem.
In available liquid crystal display device, normal adjustment image to be displayed being carried out to contrast, the adjust thinking of general picture contrast is: the gray level information of statistics image to be displayed, according to the gray-scale distribution of image to be displayed, change the bright dark relation of gray scale of output image, make details in a play not acted out on stage, but told through dialogues darker, bright field is brighter, improve the comparison of light and shade of display image, improve image level.But due to, details in a play not acted out on stage, but told through dialogues is dark to a certain extent, bright field bright to a certain extent after all can lose the details of picture, therefore in existing program when doing setting contrast, give at least two setting contrast curves, for three, setting contrast curve comprises, low gray scale curve, middle gray scale curve, high gray curve, the GTG of correspondence image is less than first threshold respectively, the GTG of image is greater than first threshold and is less than Second Threshold, the GTG of image is greater than the situation of the 3rd threshold value, processor can give different weights according to the gray-scale distribution of image to be displayed to different setting contrast curves.In embodiment provided by the invention, the adjustment of image gray-scale level was carried out before the adjustment carrying out contrast, make at the GTG carrying out not re-using when carrying out GTG statistics in setting contrast original input picture, but use the image gray-scale level after adjusting according to each primary colours accounting.The final image produced is made to keep good contrast
Embodiment two
The present embodiment is applicable to the display device adopting Organic Light Emitting Diode (OrganicLight-EmittingDiode, OLED).In OLED display, do not need backlight, and on display panel, each pixel all can control separately.
In procedure for displaying, equally namely can process whole picture frame, also picture frame can be carried out the laggard row relax of subregion, to be treated to example for whole picture frame in the present embodiment.
Frame of video 201 is images to be displayed of a frame input, in procedure for displaying, inventor finds, even if the image to be displayed of input has identical GTG, when but if the blue GTG comprised in image to be displayed is more, although the image display brightness that display device exports is identical, but the display brightness that human eye is experienced is less than and comprises the more situation of green GTG, for this reason, before image exports, need to determine the grey decision-making that image to be displayed in this liquid crystal indicator is corresponding in the embodiment of the present invention, determine the accounting of the redgreenblue in image to be displayed simultaneously, according to accounting and the default weight of redgreenblue in image to be displayed, the GTG of adjustment image to be displayed, then the image after adjustment GTG is exported.
Specifically, comprising:
Step 301, obtains the first grey decision-making of each primary colours in image to be displayed, and the GTG accounting of each primary colours;
Step 302, according to the GTG accounting of each primary colours, and the first preset function determination GTG regulation coefficient, wherein the first preset function is the function of GTG regulation coefficient and each primary colours GTG accounting, to make GTG regulation coefficient, reduce with the increase of green GTG accounting, increase with the increase of blue GTG accounting;
Step 303, according to the first grey decision-making of primary colours each in image to be displayed and the product of GTG regulation coefficient, determines the second grey decision-making of each primary colours in image to be displayed;
Step 304, carries out the output of image to be displayed according to the second grey decision-making of primary colours each in image to be displayed.
Its treatment step, is not repeated at this as above-described embodiment is similar with beneficial effect.
Embodiment three
The invention provides a kind of display device, comprise display panel, also comprise the first determining unit, the second determining unit, GTG adjustment unit, output unit;
First determining unit 401 is configured to the first grey decision-making obtaining each primary colours in image to be displayed, and the GTG accounting of each primary colours;
Second determining unit 402 is configured to the GTG accounting according to each primary colours, and the first preset function determination GTG regulation coefficient, wherein the first preset function is the function of GTG regulation coefficient and each primary colours GTG accounting, to make GTG regulation coefficient, reduce with the increase of green GTG accounting, increase with the increase of blue GTG accounting;
GTG adjustment unit 403 is configured to the product of the first grey decision-making according to primary colours each in image to be displayed and GTG regulation coefficient, determines the second grey decision-making of each primary colours in image to be displayed;
Output unit 404 is configured to export image to be displayed to display panel according to the second grey decision-making of primary colours each in image to be displayed.
Display device can also comprise backlight determining unit, and backlight determining unit exports according to the backlight of the first grey decision-making determination display device of each primary colours.
In this application, in conjunction with the GTG regulation coefficient of the first function determination image to be displayed preset, first preset function is the function corresponding relation formula of GTG regulation coefficient and each primary colours GTG accounting, GTG regulation coefficient for making reduces along with the increase of green GTG accounting, increases with the increase of blue GTG accounting.Reduce the GTG of image when the green accounting in image to be displayed therefore can be made more, and then reduce the output brightness of image, the display brightness that human eye is got reduces, and alleviates the defect that green more picture brightness is excessively bright; Promote the GTG of image when blue accounting in image to be displayed is more, and then promote the output brightness of image, the display brightness that human eye is got increases, and alleviates the defect that blue more picture brightness is excessively dark.
Those skilled in the art should understand, embodiments of the invention can be provided as method or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disk memory, cd-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the process flow diagram of the method for the embodiment of the present invention, device (system) and computer program and/or block scheme.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block scheme and/or square frame and process flow diagram and/or block scheme and/or square frame.These computer program instructions can being provided to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data treating apparatus to produce a machine, making the instruction performed by the processor of computing machine or other programmable data treating apparatus produce device for realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data treating apparatus, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be loaded on computing machine or other programmable data treating apparatus, make to perform sequence of operations step on the computer or other programmable apparatus to produce computer implemented process, thus the instruction performed on the computer or other programmable apparatus is provided for the step realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.

Claims (10)

1. an image processing method, is characterized in that, comprises
Obtain the first grey decision-making of each primary colours in image to be displayed, and the GTG accounting of each primary colours;
According to the GTG accounting of described each primary colours, and the first preset function determination GTG regulation coefficient, wherein, first preset function is the function of GTG regulation coefficient and each primary colours GTG accounting, be configured to make GTG regulation coefficient, reduce with the increase of green GTG accounting, increase with the increase of blue GTG accounting;
According to the first grey decision-making of primary colours each described in image to be displayed and the product of described GTG regulation coefficient, determine the second grey decision-making of each primary colours in image to be displayed;
The output of image to be displayed is carried out according to the second grey decision-making of primary colours each described in image to be displayed.
2. the method for claim 1, is characterized in that,
The initial value of described GTG regulation coefficient is 1, and described first preset function is configured to, and when green GTG accounting is greater than blue GTG accounting, described GTG regulation coefficient is less than 1, and reduces with the increase of described green GTG accounting; When described green GTG accounting is less than described blue GTG accounting, described GTG regulation coefficient is greater than 1, and increases with the increase of described blue GTG accounting.
3. method as claimed in claim 2, is characterized in that,
Described first preset function is configured to, and makes described GTG regulation coefficient between 0.5 to 1.5.
4. method as claimed in claim 3, is characterized in that,
Described first preset function is configured to, and makes described GTG regulation coefficient between 0.8 to 1.2.
5. the method as described in any one of claim 1-4, is characterized in that,
In described acquisition image to be displayed, the first grey decision-making of each primary colours is specially:
Obtain the grey decision-making of each pixel in image to be displayed;
The first grey decision-making in image to be displayed is determined according to the grey decision-making of pixel each in described image to be displayed;
Using first grey decision-making of the first grey decision-making of described image to be displayed as the first grey decision-making of redness corresponding to image to be displayed, the first green grey decision-making and blueness.
6. the method as described in any one of claim 1-4, is characterized in that,
In described acquisition image to be displayed, the first grey decision-making of each primary colours is specially:
According to the red grey decision-making of pixel each in image to be displayed, determine the first grey decision-making of redness corresponding in image to be displayed;
According to the green grey decision-making of pixel each in image to be displayed, determine the first grey decision-making of green corresponding in image to be displayed;
According to the blue grey decision-making of pixel each in image to be displayed, determine the first grey decision-making of blueness corresponding in image to be displayed.
7. the method as described in claim 1-4 any one, is characterized in that,
In described acquisition image to be displayed, the accounting of each primary colours is specially:
According to formula , , , determine the red GTG accounting that image to be displayed is corresponding respectively , green GTG accounting with blue GTG accounting ; Wherein, for the red grey decision-making sum of pixels all in image to be displayed, for the green grey decision-making sum of pixels all in image to be displayed, for the blue grey decision-making sum of pixels all in image to be displayed;
Specifically, the red grey decision-making sum of all pixels in image to be displayed is first calculated , the green grey decision-making sum of all pixels in image to be displayed and the blue grey decision-making sum of all pixels in image to be displayed , the red GTG accounting that image to be displayed is corresponding be ; The green GTG accounting that image to be displayed is corresponding be ; The blue GTG accounting that image to be displayed is corresponding be .
8. a display device, comprises display panel, it is characterized in that, also comprises:
First determining unit, described first determining unit is configured to the first grey decision-making obtaining each primary colours in image to be displayed, and the GTG accounting of each primary colours;
Second determining unit, described second determining unit is configured to the GTG accounting according to described each primary colours, and the first preset function determination GTG regulation coefficient, wherein said first preset function is the function of GTG regulation coefficient and each primary colours GTG accounting, to make GTG regulation coefficient, reduce with the increase of green GTG accounting, increase with the increase of blue GTG accounting;
GTG adjustment unit, described GTG adjustment unit is configured to the product of the first grey decision-making according to primary colours each in described image to be displayed and described GTG regulation coefficient, determines the second grey decision-making of each primary colours in image to be displayed;
Output unit, described output unit is configured to export image to be displayed to display panel according to the second grey decision-making of primary colours each in described image to be displayed.
9. display device as claimed in claim 8, is characterized in that,
Described display panel is display panels, and described display device also comprises backlight determining unit, and described backlight determining unit is configured to export according to the backlight of the first grey decision-making determination display device of each primary colours.
10. display device as claimed in claim 8, is characterized in that,
Described display panel is organic electroluminescence display panel.
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