WO2018176530A1 - 显示器画面生成方法及系统 - Google Patents

显示器画面生成方法及系统 Download PDF

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WO2018176530A1
WO2018176530A1 PCT/CN2017/081209 CN2017081209W WO2018176530A1 WO 2018176530 A1 WO2018176530 A1 WO 2018176530A1 CN 2017081209 W CN2017081209 W CN 2017081209W WO 2018176530 A1 WO2018176530 A1 WO 2018176530A1
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value
lab
tristimulus
display
rgb
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PCT/CN2017/081209
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English (en)
French (fr)
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王艳雪
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深圳市华星光电技术有限公司
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Priority to US15/528,737 priority Critical patent/US10360873B2/en
Publication of WO2018176530A1 publication Critical patent/WO2018176530A1/zh

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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02Control 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
    • G09G5/026Control of mixing and/or overlay of colours in general
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02Control 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
    • G09G5/028Circuits for converting colour display signals into monochrome display signals
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/06Adjustment of display parameters
    • G09G2320/0666Adjustment of display parameters for control of colour parameters, e.g. colour temperature
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/06Adjustment of display parameters
    • G09G2320/0673Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00Aspects of display data processing
    • G09G2340/06Colour space transformation

Definitions

  • the invention relates to the field of display technology, in particular to a display screen generating method and system based on the CIE Lab color system.
  • color systems such as CIE1931XYZ color system or CIE1976LUV have been used to describe colors, and then applied to display angles, color shifts, and the like.
  • CIELab color system is a more uniform color space, so most color cast formulas are developed based on the CIElab color system.
  • color shift formulas such as CIE DE2000
  • the CIE1931 XYZ standard color system is often used in the industry to describe colors, but compared with the CIElab color system, its color space.
  • the present invention provides a display screen generating method and system such that the color displayed by the display is closer to the true color.
  • the invention provides a display screen generating method, which comprises the following steps:
  • Step S1 Obtain an LCH value of a color n, and obtain a first Lab value by calculation; the first Lab value is obtained by converting an LCH value of the color n into Lab;
  • Step S2 measuring, by the color analyzer, the first display value of the measured display obtained by the measured display, the first original value including the tristimulus values of the full gray scale (0-255) of four colors of R, G, B, and W , gamma value of four colors of R, G, B, W, tristimulus value of pure white picture, chromaticity value of pure red, pure green, pure blue; using the pure white picture tristimulus value as the reference value and the first Lab value Performing a calculation to obtain a first tristimulus value of color n; the first tristimulus value is converted to an XYZ value by using a Lab value of the first Lab value To
  • Step S3 calculating the first tristimulus value of the color n and the chromaticity value of the pure red, pure green, and pure blue in the first original value, and the pure white picture tristimulus value to obtain the first output gray level value;
  • the first output gray scale value is obtained by converting the XYZ value into an RGB value;
  • Step S4 calculating the first output grayscale value and the gamma value respectively, to obtain a first input grayscale value input to the display;
  • Step S5 calculating a first input grayscale value and a tristimulus value of the RBG three colors in the first original value to obtain a second Lab value;
  • Step S6 Comparing the first Lab value with the second Lab value. If they match, the process proceeds to step S7, and the first input grayscale value is output to the display to be tested for display.
  • the first input grayscale value and the tristimulus value of the RBG three colors in the first original value are calculated to obtain a second Lab value obtained by mixing the tristimulus values of the RGB three colors.
  • step S6 when the first Lab value is compared with the second Lab value, the process proceeds to step S8, and the correction is performed once.
  • the one-time correction includes the following steps:
  • Step S11 calculating, by using the first input grayscale value, a tristimulus value of R1in , G1in , and B1in in the first input grayscale value, and then calculating a third third of the color n corresponding to the first input grayscale value.
  • a stimulus value the third tristimulus value is obtained by converting the first input grayscale value into an XYZ value by using an RGB value;
  • Step S12 obtaining a second output grayscale value by calculating a third tristimulus value; the second output grayscale value is obtained by converting the third tristimulus value into RGB values by using an XYZ value;
  • Step S13 calculating a gamma value corresponding to the second output grayscale value and the first input grayscale value to obtain a second input grayscale value, and outputting;
  • Step S14 calculating a third Lab value by calculating a second input grayscale value
  • Step S15 Comparing the third Lab value with the first Lab value, if yes, proceeding to step S16, and outputting the second input grayscale value to the display to be tested for display.
  • the second input grayscale value is obtained by calculating the third Lab value by obtaining the second input grayscale value and obtaining the second input grayscale value by using the RGB value to the XYZ value.
  • the RGB tristimulus value; the obtained RGB tristimulus value is converted into a Lab value by an XYZ value to obtain a third Lab value.
  • step S15 when the third Lab value is compared with the first Lab value, the process proceeds to step S17, and the second correction is performed.
  • the secondary correction includes the following steps:
  • Step S21 The second input gray scale value is simultaneously and sequentially changed by ⁇ 1 to 10 to obtain a third input gray scale value, and the third input gray scale value is calculated by the third gray scale value after each change.
  • RGB tristimulus values; the third tristimulus values are obtained by converting the first input grayscale values into XYZ values using RGB values;
  • Step S22 the RGB tristimulus value is calculated to obtain a fourth Lab value; and the fourth Lab value is obtained by converting the RGB tristimulus value into an Lab value by using an XYZ value;
  • Step S23 Comparing the fourth Lab value with the first Lab value, if yes, proceeding to step S24, and outputting the third input grayscale value to the display to be tested for display.
  • step S23 the fourth Lab value is compared with the first Lab value. If they do not match, the process returns to step S21, and steps S21 to S23 are repeated until the fourth Lab value is consistent with the first Lab value.
  • the invention also provides a display screen generating system, the system comprising:
  • Obtaining a module configured to acquire an LCH value of a color n and obtain a first original value of the display to be tested and send the conversion to the conversion module for conversion;
  • a conversion module configured to convert the LCH value of the color n into a first Lab value according to the first original value; and convert the XYZ value, the RGB value, the Lab value, and the grayscale value according to the first Lab value and the first original value ;
  • a judging module configured to compare the Lab value with the first Lab value, and send an output command to the output module in agreement, and send a correction command to the calibration module if the inconsistency is not satisfied;
  • An output module configured to output a corresponding grayscale value to the measured display after receiving the output instruction
  • the correction module is configured to perform a correction on the grayscale value after receiving the correction instruction, and send the corrected grayscale value to the conversion module.
  • correction module is further configured to perform second correction on the grayscale value, and send the corrected grayscale value to the conversion module.
  • the present invention is based on the CIE Lab color system, and the Lab value can be calculated by knowing the brightness (L), hue (H) and hue (C) of a certain color, and then calculating the value.
  • the XYZ value of the color is obtained based on the gamma characteristic value of the display and the R, G, and B chromaticity values, and the display screen of the color is obtained, and it is determined whether the Lab value of the generated display screen is appropriate. If not, the gamma parameter is corrected. Display screen correction until the appropriate display is produced, thereby providing convenience for the measurement of color difference under the CIELab color system and bringing the colors in the display closer to the true color.
  • FIG. 1 is a flow chart of a display screen generating method of the present invention
  • Figure 2 is a flow chart of a modification of the present invention
  • FIG. 3 is a flow chart of the second modification of the present invention.
  • Figure 4 is a block diagram of the system of the present invention.
  • the RBG value hereinafter refers to the RGB value under the CIE1931 color system
  • the XYZ value is the XYZ value under the CIE1931-XYZ standard chromaticity system.
  • a display screen generating method of the present invention includes the following steps:
  • Step S1 Obtain an LCH value (lightness (L), hue (H), and hue (C) value) of a color n, and obtain a first Lab value by calculation;
  • the first Lab value is obtained by the above formula.
  • Step S2 measuring, by the color analyzer, the first display value of the measured display obtained by the measured display, the first original value including the tristimulus values of the full gray scale (0-255) of four colors of R, G, B, and W , gamma value of four colors of R, G, B, W, tristimulus value of pure white picture (X w , Y w , Z w ), chromaticity value of pure red, pure green, pure blue (x r , x g , x b ; y r , y g , y b ); calculating the purely white picture tristimulus value as the reference value and the first Lab value to obtain the first tristimulus value of the color n (X 1n , Y 1n , Z 1n ) ;
  • the pure white picture tristimulus value is calculated with the first Lab value to obtain a first tristimulus value (X 1n , Y 1n , Z 1n ) of the color n obtained by converting the XYZ value by a Lab value, as follows:
  • a CS2000 type color analyzer or a CA310 type or the like can be used.
  • Step S3 the chromaticity values (x r , x g , x b ; y r , y g , y b ) of the first tristimulus value of the color n and the pure red, pure green, and pure blue in the first original value.
  • the pure white picture tristimulus values (X w , Y w , Z w ) are calculated to obtain the first output gray level values (R 1out , G 1out , B 1out );
  • the first output grayscale value (R 1out , G 1out , B 1out ) is obtained by the following calculation; and the transformation matrix of the XYZ value to the RGB value is obtained by the M matrix inversion matrix M ⁇ 1 :
  • the R color point here refers to the color point x r , y r when the display shows pure red; when G is pure green x g , y g ; B is x b , y b in pure blue.
  • Step S4 calculating the first output grayscale value and the gamma value respectively, to obtain a first input grayscale value ( R1in , G1in , B1in ) input to the display; the gamma value is 2.2;
  • R 1in 255*R out ⁇ (1/R_gamma);
  • G 1in 255*G out ⁇ (1/G_gamma);
  • R_gamma takes the gamma value corresponding to the R gray level in the first original value
  • G_gamma takes the gamma value corresponding to the G gray level in the first original value
  • B_gamma takes the gamma value corresponding to the B gray level in the first original value.
  • Step S5 calculating a first input grayscale value ( R1in , G1in , B1in ) and a tristimulus value of the RBG three colors in the first original value to obtain a second Lab value;
  • the first input gray scale value (R 1in , G 1in , B 1in ) and the tristimulus value of the RBG three colors in the first original value are subjected to XYZ value conversion.
  • the Lab value is obtained by the following method:
  • the tristimulus values of the three colors of RGB are mixed; the second tristimulus values (X 2n , Y 2n , Z 2n ) of the color n are calculated by the addition principle, and the specific calculation is as follows:
  • X n X R +X G +X B ;
  • Y n Y R + Y G + Y B ;
  • Z n Z R + Z G + Z B ;
  • the second Lab value is obtained by converting the Lab value by the XYZ value, and the specific calculation is as follows:
  • Step S6 Comparing the first Lab value with the second Lab value. If they match, the process proceeds to step S7, and the first input grayscale value is output to the display to be tested for display.
  • step S8 When the first Lab value is compared with the second Lab value to be inconsistent, the process proceeds to step S8 to perform a correction.
  • the one-time correction includes the following steps:
  • Step S11 Calculate the tristimulus values of R 1in , G 1in , and B 1in in the first input gray scale value by using the first input gray scale value (R 1in , G 1in , B 1in ), and then calculate the first input gray scale.
  • the first input gray scale value is converted into an XYZ value by an RGB value to obtain a third tristimulus value, which is obtained by the following calculation:
  • the R color point here refers to the color point x r , y r when the display shows pure red; when G is pure green x g , y g ; B is x b , y b in pure blue.
  • the third tristimulus values (X 3n , Y 3n , Z 3n ) of the color n are obtained by mixing the tristimulus values of the RGB three colors in the color n, and are specifically calculated by the following formula:
  • X X R +X G +X B ;
  • Y Y R +Y G +Y B ;
  • Z Z R + Z G + Z B ;
  • X R , Y R , Z R are tristimulus values of R 1in ;
  • X G , Y G , Z G are tristimulus values of G 1in ;
  • X B , Y B , Z B are tristimulus values of B 1in ;
  • Step S12 by calculating the third tristimulus value, obtaining a second output grayscale value (R 2out , G 2out , B 2out );
  • the transformation matrix of the XYZ value to the RGB value is obtained by the M matrix inversion matrix M -1 , thereby calculating the second output gray scale value;
  • R R 2out
  • G G 2out
  • B B 2out
  • X X 2n
  • Y Y 2n
  • Z Z 2n
  • the R color point here refers to the color point x r , y r when the display shows pure red; when G is pure green x g , y g ; B is x b , y b in pure blue.
  • Step S13 calculating a second output grayscale value and a gamma value corresponding to the first input grayscale value to obtain a second input grayscale value ( R2in , G2in , B2in ) and outputting;
  • R 2in 255*R 2out ⁇ (1/R_gamma);
  • G 2in 255*G 2out ⁇ (1/G_gamma);
  • R_gamma takes the gamma value corresponding to the R 1in gray scale
  • G_gamma takes the gamma value corresponding to the G 1in gray scale
  • B_gamma takes the gamma value corresponding to the B 1in gray scale.
  • Step S14 calculating a third Lab value by calculating a second input grayscale value
  • the RGB tristimulus value corresponding to the second input grayscale value is obtained by calculation, and the RGB tristimulus value is obtained by converting the RGB value to the XYZ value, and the following calculation is used:
  • the R color point here refers to the color point x r , y r when the display shows pure red; when G is pure green x g , y g ; B is x b , y b in pure blue.
  • the obtained RGB tristimulus value is converted to the Lab value by the XYZ value to obtain the third Lab value, which is specifically calculated as follows:
  • t represents X/X w , Y/Y w , Z/Z w , wherein X, Y, and Z are RGB tristimulus values.
  • Step S15 Comparing the third Lab value with the first Lab value, if yes, proceeding to step S16, and outputting the second input grayscale value to the display to be tested for display.
  • step S17 When the third Lab value is inconsistent with the first Lab value, the process proceeds to step S17, and the second correction is performed.
  • the secondary correction includes the following steps:
  • Step S21 The second input gray scale values (R 2in , G 2in , and B 2in ) are simultaneously and sequentially changed by ⁇ 1 to 10, that is, each time R 2in , G 2in , and B 2in are simultaneously ⁇ 1 to 10, which are Starting from 1, the third input gray scale value (R 3in , G 3in , B 3in ) is obtained, and after each change, the third input gray scale value is calculated to obtain the RGB tristimulus value corresponding to the third gray scale value ( XYZ value);
  • the RGB tristimulus value corresponding to the third gray scale value obtained by calculating the third input gray scale value is obtained by using an RGB value to an XYZ value, and is calculated by using the following formula:
  • the R color point here refers to the color point x r , y r when the display shows pure red; when G is pure green x g , y g ; B is x b , y b in pure blue.
  • Step S22 calculating the RGB tristimulus value to obtain a fourth Lab value
  • the RGB tristimulus value is calculated by the XYZ value conversion Lab value to obtain the fourth Lab value obtained by the following formula:
  • t represents X/X w , Y/Y w , Z/Z w , wherein X, Y, and Z are RGB tristimulus values.
  • Step S23 Comparing the fourth Lab value with the first Lab value, if yes, proceeding to step S24, and outputting the third input grayscale value to the measured display for display. If not, returning to step S21, repeating step S21 to step S23, until the fourth Lab value is consistent with the first Lab value.
  • the display screen generating system of the present invention includes:
  • An acquisition module configured to acquire an LCH value of a color n and obtain a first original value of the display to be tested and send the conversion to the conversion module for conversion; the acquisition of the first original value of the measured display may be measured by a color analyzer measurement Display obtained;
  • a conversion module configured to convert the LCH value of the color n into a first Lab value according to the first original value; and convert the XYZ value, the RGB value, the Lab value, and the grayscale value according to the first Lab value and the first original value
  • the conversion module sends the Lab value obtained by the final conversion to the judgment module for judgment;
  • a judging module configured to compare the Lab value with the first Lab value, and send an output command to the output module in agreement, and send a correction command to the calibration module if the inconsistency is not satisfied;
  • An output module configured to output a corresponding grayscale value to the measured display after receiving the output instruction
  • a correction module configured to perform a correction on the grayscale value after receiving the correction instruction, and send the corrected grayscale value to the conversion module;
  • the correction module is further configured to perform a second correction on the grayscale value and send the corrected grayscale value to the conversion module.
  • Step S1 The acquiring module acquires an LCH value (lightness (L), hue (H), and hue (C)) of a color n, and calculates a first Lab value by using a conversion module;
  • LCH value lightness (L), hue (H), and hue (C)
  • Step S2 measuring the first original value of the measured display by the color analyzer and sending the first original value of the measured display to the acquiring module; the converting module calculates the pure white image tristimulus value as the reference value and the first Lab value to obtain the color n.
  • the first tristimulus value (X 1n , Y 1n , Z 1n );
  • Step S3 the conversion module compares the first tristimulus value of the color n with the chromaticity values of the pure red, pure green, and pure blue in the first original value (x r , x g , x b ; y r , y g , y b ) and the pure white picture tristimulus values (X w , Y w , Z W ) are calculated to obtain the first output gray level values (R 1out , G 1out , B 1out );
  • Step S4 the conversion module calculates the first output grayscale value and the gamma value, respectively, to obtain a first input grayscale value ( R1in , G1in , B1in ) input to the display;
  • Step S5 the conversion module calculates the first input grayscale value ( R1in , G1in , B1in ) and the tristimulus value of the RBG three colors in the first original value to obtain a second Lab value and sends the second Lab value to the determining module;
  • Step S6 The determining module compares the first Lab value with the second Lab value. If yes, the process proceeds to step S7, the first input grayscale value is sent to the output module, and the output module outputs to the measured display for display.
  • step S8 When the first Lab value is compared with the second Lab value to be inconsistent, the process proceeds to step S8 to perform a correction.
  • the one-time correction includes the following steps:
  • Step S11 The conversion module calculates a tristimulus value of R 1in , G 1in , and B 1in in the first input gray scale value by using the first input gray scale value (R 1in , G 1in , B 1in ), and then calculates the first input.
  • Step S12 The conversion module calculates the third output grayscale value (R 2out , G 2out , B 2out ) by calculating the third tristimulus value, and sends the result to the correction module.
  • Step S13 the correction module calculates the second output grayscale value and the gamma value corresponding to the first input grayscale value to obtain the second input grayscale value ( R2in , G2in , B2in ), and outputs the result to the conversion module;
  • Step S14 The conversion module calculates the third Lab value by calculating the second input grayscale value, and sends the third Lab value to the determining module to determine;
  • Step S15 The determining module compares the third Lab value with the first Lab value, and if yes, the process proceeds to step S16, and the second input grayscale value is output to the output module, and the output module outputs the output to the measured display for display.
  • step S17 When the third Lab value is inconsistent with the first Lab value, the process proceeds to step S17, and the second correction is performed.
  • the secondary correction includes the following steps:
  • Step S21 The calibration module sequentially changes the second input grayscale values (R 2in , G 2in , and B 2in ) by ⁇ 1 to 10 to obtain a third input grayscale value (R 3in , G 3in , B 3in ), and each After the second change, the third input grayscale value is sent to the conversion module for calculation, and the RGB tristimulus value corresponding to the third grayscale value is obtained by calculation;
  • Step S22 The conversion module calculates the RGB tristimulus value to obtain a fourth Lab value and sends the result to the determining module for determining;
  • Step S23 The determining module compares the fourth Lab value with the first Lab value, and if yes, the process proceeds to step S24, the determining module sends the third input grayscale value to the output module, and the output module outputs the output to the measured display for display, which is inconsistent. Then, returning to step S21, steps S21 to S23 are repeated until the fourth Lab value coincides with the first Lab value.

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Abstract

一种显示器画面生成方法,包括:S1、将LCH值通过计算得到第一Lab值;S2、获得被测显示器的第一原始值;将纯白画面三刺激值作为参考值与第一Lab值进行计算得到颜色n的第一三刺激值;S3、第一三刺激值进行计算得到第一输出灰阶值;S4、将第一输出灰阶值进行计算得到第一输入灰阶值;S5、将第一输入灰阶值进行计算得到第二Lab值;S6、将第一Lab值与第二Lab值进行比较。显示器画面生成系统包括:获取模块、转换模块、判断模块、输出模块、校正模块。与现有技术相比,使显示画面中的颜色更接近真实色彩。

Description

显示器画面生成方法及系统 技术领域
本发明涉及一种显示技术领域,特别是一种基于CIE Lab颜色系统的显示器画面生成方法及系统。
背景技术
在液晶面板行业,一直是使用CIE1931XYZ颜色系统或者CIE1976LUV等色度系统来描述颜色,进而应用到显示器视角、色偏等描述之中。相对于LUV色彩系统来说,CIELab色彩系统是更加均匀的色空间,故多数色偏公式是以CIElab色彩系统为基础而展开色偏计算。随着色偏公式的发展(如CIE DE2000),Lab在显示行业的应用也被不断提及,行业内常使用CIE1931 XYZ标准色度系统来描述颜色,但与CIElab色彩系统相比,其色空间的均匀性较差,在描述色差时不准确,虽有有些使用LUV系统定义色差,但其色空间均匀性也不及LAB系统,且目前行业内的最新色差公式多是以CIELab色彩系统为基础来提出。在量测画面(pattern)的定义上,业内常用的方式是定义其pattern的RGB值,使显示器显示,再来进行量测。但是对于不同的显示器来说,因其显示屏的特性不同,同一个RGB时显示出的画面颜色在人眼看来并不相同。如何进行色偏等量测以及调整,使其能够更接近真是色彩,是一个值得思考的问题。
发明内容
为克服现有技术的不足,本发明提供一种显示器画面生成方法及系统,从而使得显示器所显示的颜色更接近真实色彩。
本发明提供了一种显示器画面生成方法,包括如下步骤:
步骤S1、获取一颜色n的LCH值,通过计算得到第一Lab值;所述第一Lab值通过将颜色n的LCH值转换为Lab得到;
步骤S2、通过色彩分析仪测量被测显示器获得该被测显示器的第一原始值,所述第一原始值包括R、G、B、W四色全灰阶(0~255)的三刺激值,R、G、B、W四色的gamma值、纯白画面三刺激值、纯红、纯绿、纯蓝时的色度值;将纯白画面三刺激值作为参考值与第一Lab值进行计算得到颜色n的第一三刺激值;所述第一三刺激值通过将第一Lab值采用Lab值转换为XYZ值得 到;
步骤S3、将颜色n的第一三刺激值与第一原始值中的纯红、纯绿、纯蓝时的色度值及纯白画面三刺激值进行计算得到第一输出灰阶值;所述第一输出灰阶值采用通过XYZ值转换为RGB值得到;
步骤S4、将第一输出灰阶值分别与gamma值进行计算,得到输入至显示器的第一输入灰阶值;
步骤S5、将第一输入灰阶值与第一原始值中RBG三色的三刺激值进行计算得到第二Lab值;
步骤S6、将第一Lab值与第二Lab值进行比较,一致时,则进入步骤S7,将第一输入灰阶值输出至被测显示器进行显示。
进一步地,所述步骤S5中将第一输入灰阶值与第一原始值中RBG三色的三刺激值进行计算得到第二Lab值通过如下方式得到:将RGB三色的三刺激值进行混色;得到颜色n的第二三刺激值;在获得了颜色n的第二三刺激值后,通过XYZ值转换Lab值获得第二Lab值。
进一步地,所述步骤S6中,当第一Lab值与第二Lab值进行比较为不一致时,则进入步骤S8,进行一次修正。
进一步地,所述一次修正包括如下步骤:
步骤S11、通过第一输入灰阶值计算得到第一输入灰阶值中R1in、G1in、B1in的三刺激值后再计算得到第一输入灰阶值所对应的颜色n的第三三刺激值;所述第三三刺激值通过将第一输入灰阶值通过RGB值转换XYZ值得到;
步骤S12、通过将第三三刺激值进行计算,得到第二输出灰阶值;所述第二输出灰阶值通过将第三三刺激值通过XYZ值转换RGB值得到;
步骤S13、将第二输出灰阶值与第一输入灰阶值所对应的gamma值进行计算得到第二输入灰阶值后输出;
步骤S14、将第二输入灰阶值通过计算得到第三Lab值;
步骤S15、将第三Lab值与第一Lab值进行比较,一致,则进入步骤S16,将第二输入灰阶值输出至被测显示器进行显示。
进一步地,所述步骤S14中将第二输入灰阶值通过计算得到第三Lab值采用如下方式获得:获得第二输入灰阶值后通过RGB值转XYZ值得到第二输入灰阶值所对应的RGB三刺激值;将得到的RGB三刺激值通过XYZ值转换Lab值得到第三Lab值。
进一步地,所述步骤S15中,当第三Lab值与第一Lab值进行比较为不一致,则进入步骤S17,进行二次修正。
进一步地,所述二次修正包括如下步骤:
步骤S21、将第二输入灰阶值分别同时并且依次进行±1~10变动,得到第三输入灰阶值,每次变动后将第三输入灰阶值通过计算得到第三灰阶值所对应的RGB三刺激值;所述第三三刺激值通过将第一输入灰阶值采用RGB值转换XYZ值得到;
步骤S22、将RGB三刺激值通过计算得到第四Lab值;所述第四Lab值通过将RGB三刺激值通过XYZ值转换Lab值得到;
步骤S23、将第四Lab值与第一Lab值进行比较,一致则进入步骤S24,将第三输入灰阶值进行输出至被测显示器进行显示。
进一步地,所述步骤S23中将第四Lab值与第一Lab值进行比较,不一致,则返回步骤S21,重复步骤S21至步骤S23,直到第四Lab值与第一Lab值一致为止。
本发明还提供了一种显示器画面生成系统,该系统包括:
获取模块,用于获取一颜色n的LCH值以及获取被测显示器的第一原始值并发送至转换模块进行转换;
转换模块,用于将颜色n的LCH值根据第一原始值转换为第一Lab值;根据第一Lab值和第一原始值进行XYZ值、RGB值、Lab值以及灰阶值之间的转换;
判断模块,用于将Lab值与第一Lab值进行比较,一致则向输出模块发送输出指令,不一致则向校正模块发送校正指令;
输出模块,用于在接收到输出指令后向被测显示器输出相应的灰阶值;
校正模块,用于在接收到校正指令后对灰阶值进行一次修正,并将修正后的灰阶值发送至转换模块。
进一步地,所述校正模块还用于对灰阶值进行二次修正,并将修正后的灰阶值发送至转换模块。
本发明与现有技术相比,本发明基于CIE Lab颜色系统,通过对已知某一颜色的明度(L)、色调(H)及色相时(C)可计算得到其Lab值,再计算得到该颜色的XYZ值,根据显示器的gamma特性值及R、G、B色度值等参数,得到该颜色的显示画面,判定生成的显示画面的Lab值是否恰当,如不恰当,则修正gamma参数,进行显示画面修正,直到生产恰当的显示画面为止,从而为CIELab色彩系统下的色差的量测应用提供便利条件,并且使显示画面中的颜色更接近真实色彩。
附图说明
图1是本发明的显示器画面生成方法的流程图;
图2是本发明一次修正的流程图;
图3是本发明的二次修正的流程图;
图4是本发明的系统框图。
具体实施方式
下面结合附图和实施例对本发明作进一步详细说明。
本发明由于是基于CIELab颜色系统实现,因此下文中RBG值指代的是CIE1931色彩系统下的RGB值,XYZ值为CIE1931-XYZ标准色度系统下的XYZ值。
如图1所示,本发明的一种显示器画面生成方法,包括如下步骤:
步骤S1、获取一颜色n的LCH值(明度(L)、色调(H)和色相(C)的值),通过计算得到第一Lab值;
所述颜色n的LCH值转换为第一Lab值采用以下公式计算得到:
L=L;
a=Ccos(H);
b=Csin(H);
通过上述公式从而得到第一Lab值。
步骤S2、通过色彩分析仪测量被测显示器获得该被测显示器的第一原始值,所述第一原始值包括R、G、B、W四色全灰阶(0~255)的三刺激值,R、G、B、W四色的gamma值、纯白画面三刺激值(Xw、Yw、Zw)、纯红、纯绿、纯蓝时的色度值(xr、xg、xb;yr、yg、yb);将纯白画面三刺激值作为参考值与第一Lab值进行计算得到颜色n的第一三刺激值(X1n、Y1n、Z1n);
所述纯白画面三刺激值与第一Lab值进行计算得到颜色n的第一三刺激值(X1n、Y1n、Z1n)采用Lab值转换XYZ值获得,具体如下:
Figure PCTCN2017081209-appb-000001
Figure PCTCN2017081209-appb-000002
Figure PCTCN2017081209-appb-000003
式中,fy=(L+16)/116,
Figure PCTCN2017081209-appb-000004
fz=fy-b/200其中,a为第一Lab值中a的值,b为第一Lab值中b的值。
本发明中色彩分析仪可采用CS2000型色彩分析仪或CA310型等。
步骤S3、将颜色n的第一三刺激值与第一原始值中的纯红、纯绿、纯蓝时的色度值(xr、xg、xb;yr、yg、yb)及纯白画面三刺激值(Xw、Yw、Zw)进行计算得到第一输出灰阶值(R1out、G1out、B1out);
具体地,采用以下计算得到第一输出灰阶值(R1out、G1out、B1out);通过M矩阵求逆矩阵M-1,得到XYZ值到RGB值的转换矩阵:
Figure PCTCN2017081209-appb-000005
式中R=R1out,G=G1out,B=B1out;X=X1n、Y=Y1n、Z=Z1n
所述RGB值到XYZ值的转换采用如下公式计算得到:
Figure PCTCN2017081209-appb-000006
此处M通过如下公式得到:
Figure PCTCN2017081209-appb-000007
Figure PCTCN2017081209-appb-000008
上述式中,Xr=xr/yr,Yr=1,Zr=(1-xr-yr)/yr,Xg=xg/yg,Yg=1,Zg=(1-xg-yg)/yg,Xb=xb/yb,Yb=1,Zb=(1-xb-yb)/yb;由于颜色n可以看做是红绿蓝三色的混色,而每个显示器所能显示到的色域是不同的,此处的R色点指显示器显示纯红时的色点xr,yr;G为纯绿时的xg,yg;B为纯蓝色时的xb,yb
步骤S4、将第一输出灰阶值分别与gamma值进行计算,得到输入至显示器的第一输入灰阶值(R1in、G1in、B1in);所述gamma值为2.2;
将第一输出灰阶值分别与gamma值进行计算,得到输入至显示器的第一输入灰阶值采用如下公式计算得到:
R1in=255*Rout^(1/R_gamma);
G1in=255*Gout^(1/G_gamma);
B1in=255*Bout^(1/B_gamma);
其中,R_gamma取第一原始值中R灰阶所对应的gamma值;G_gamma取第一原始值中G灰阶所对应的gamma值;B_gamma取第一原始值中B灰阶所对应的gamma值。
步骤S5、将第一输入灰阶值(R1in、G1in、B1in)与第一原始值中RBG三色的三刺激值进行计算得到第二Lab值;
所述第一输入灰阶值(R1in、G1in、B1in)与第一原始值中RBG三色的三刺激值进行XYZ值转换Lab值得到第二Lab值通过如下方式计算得到:
首先,将RGB三色的三刺激值进行混色;通过加法原理计算得到颜色n的第二三刺激值(X2n、Y2n、Z2n),具体计算如下:
Xn=XR+XG+XB
Yn=YR+YG+YB
Zn=ZR+ZG+ZB
其中,Xn=X2n,Yn=Y2n、Zn=Z2n
第二,在获得了颜色n的第二三刺激值后,通过XYZ值转换Lab值获得第二Lab值,具体计算如下:
L=116*f(Y/Yw)-16;
a=500[f(X/Xw)-f(Y/Yw)];
b=200[f(Y/Yw)-f(Z/Zw)];
Figure PCTCN2017081209-appb-000009
上述式中t代表X/Xw、Y/Yw、Z/Zw,其中,X=X2n,Y=Y2n,Z=Z2n
步骤S6、将第一Lab值与第二Lab值进行比较,一致时,则进入步骤S7,将第一输入灰阶值输出至被测显示器进行显示。
当第一Lab值与第二Lab值进行比较为不一致时,则进入步骤S8,进行一次修正。
如图2所示,所述一次修正包括如下步骤:
步骤S11、通过第一输入灰阶值(R1in、G1in、B1in)计算得到第一输入灰阶值中R1in、G1in、B1in的三刺激值后再计算得到第一输入灰阶值所对应的颜色n的第三三刺激值(X3n、Y3n、Z3n);
将第一输入灰阶值通过RGB值转换XYZ值得到第三三刺激值,采用如下计算得到:
Figure PCTCN2017081209-appb-000010
此处M通过如下公式得到:
Figure PCTCN2017081209-appb-000011
Figure PCTCN2017081209-appb-000012
上述式中,Xr=xr/yr,Yr=1,Zr=(1-xr-yr)/yr,Xg=xg/yg,Yg=1,Zg=(1-xg-yg)/yg,Xb=xb/yb,Yb=1,Zb=(1-xb-yb)/yb;由于颜色n可以看做是红绿蓝三色的混色,而每个显示器所能显示到的色域是不同的,此处的R色点指显示器显示纯红时的色点xr,yr;G为纯绿时的xg,yg;B为纯蓝色时的xb,yb
颜色n的第三三刺激值(X3n、Y3n、Z3n)通过将颜色n中RGB三色的三刺激值进行混色得到,具体采用以下公式计算得到:
X=XR+XG+XB
Y=YR+YG+YB
Z=ZR+ZG+ZB
式中,XR、YR、ZR为R1in的三刺激值;XG、YG、ZG为G1in的三刺激值;XB、YB、ZB为B1in的三刺激值;X=X3n、Y=Y3n、Z=Z3n
步骤S12、通过将第三三刺激值进行计算,得到第二输出灰阶值(R2out、G2out、B2out);
具体地,通过M矩阵求逆矩阵M-1,得到XYZ值到RGB值的转换矩阵,从而计算出第二输出灰阶值;具体为
Figure PCTCN2017081209-appb-000013
式中R=R2out,G=G2out,B=B2out;X=X2n、Y=Y2n、Z=Z2n
所述RGB值到XYZ值的转换采用如下公式计算得到:
Figure PCTCN2017081209-appb-000014
此处M通过如下公式得到:
Figure PCTCN2017081209-appb-000015
Figure PCTCN2017081209-appb-000016
上述式中,Xr=xr/yr,Yr=1,Zr=(1-xr-yr)/yr,Xg=xg/yg,Yg=1,Zg=(1-xg-yg)/yg,Xb=xb/yb,Yb=1,Zb=(1-xb-yb)/yb;由于颜色n可以看做是红绿蓝三色的混色,而每个显示器所能显示到的色域是不同的,此处的R色点指显示器显示纯红时的色点xr,yr;G为纯绿时的xg,yg;B为纯蓝色时的xb,yb
步骤S13、将第二输出灰阶值与第一输入灰阶值所对应的gamma值进行计算得到第二输入灰阶值(R2in、G2in、B2in)后输出;
R2in=255*R2out^(1/R_gamma);
G2in=255*G2out^(1/G_gamma);
B2in=255*B2out^(1/B_gamma);
其中,R_gamma取R1in灰阶所对应的gamma值;G_gamma取G1in灰阶所对应的gamma值;B_gamma取B1in灰阶所对应的gamma值。
步骤S14、将第二输入灰阶值通过计算得到第三Lab值;
具体计算为:
首先,获得第二输入灰阶值后通过计算得到第二输入灰阶值所对应的RGB三刺激值,所述RGB三刺激值通过RGB值转XYZ值得到,具体采用如下计算得到:
Figure PCTCN2017081209-appb-000017
此处M通过如下公式得到:
Figure PCTCN2017081209-appb-000018
Figure PCTCN2017081209-appb-000019
上述式中,Xr=xr/yr,Yr=1,Zr=(1-xr-yr)/yr,Xg=xg/yg,Yg=1,Zg=(1-xg-yg)/yg,Xb=xb/yb,Yb=1,Zb=(1-xb-yb)/yb;由于颜色n可以看做是红绿蓝三色的混色,而每个显示器所能显示到的色域是不同的,此处的R色点指显示器显示纯红时的色点xr,yr;G为纯绿时的xg,yg;B为纯蓝色时的xb,yb
其次,将得到的RGB三刺激值通过XYZ值转Lab值得到第三Lab值,具体采用如下计算得到:
L=116*f(Y/Yw)-16;
a=500[f(X/Xw)-f(Y/Yw)];
b=200[f(Y/Yw)-f(Z/Zw)];
Figure PCTCN2017081209-appb-000020
上述式中t代表X/Xw、Y/Yw、Z/Zw,其中,X、Y、Z为RGB三刺激值。
步骤S15、将第三Lab值与第一Lab值进行比较,一致,则进入步骤S16,将第二输入灰阶值输出至被测显示器进行显示。
当第三Lab值与第一Lab值进行比较为不一致,则进入步骤S17,进行二次修正。
如图3所示,所述二次修正包括如下步骤:
步骤S21、将第二输入灰阶值(R2in、G2in、B2in)分别同时并且依次进行±1~10变动,即每次R2in、G2in、B2in同时±1~10,依次就是从1开始进行,得到第三输入灰阶值(R3in、G3in、B3in),每次变动后将第三输入灰阶值通过计算得到第三灰阶值所对应的RGB三刺激值(XYZ值);
所述将第三输入灰阶值通过计算得到第三灰阶值所对应的RGB三刺激值采用RGB值转XYZ值得到,具体采用如下公式计算得到:
Figure PCTCN2017081209-appb-000021
此处M通过如下公式得到:
Figure PCTCN2017081209-appb-000022
Figure PCTCN2017081209-appb-000023
上述式中,Xr=xr/yr,Yr=1,Zr=(1-xr-yr)/yr,Xg=xg/yg,Yg=1,Zg=(1-xg-yg)/yg,Xb=xb/yb,Yb=1,Zb=(1-xb-yb)/yb,由于颜色n可以看做是红绿蓝三色的混色,而每个显示器所能显示到的色域是不同的,此处的R色点指显示器显示纯红时的色点xr,yr;G为纯绿时的xg,yg;B为纯蓝色时的xb,yb
步骤S22、将RGB三刺激值通过计算得到第四Lab值;
将RGB三刺激值通过XYZ值转换Lab值计算得到第四Lab值采用如下公式得到:
L=116*f(Y/Yw)-16;
a=500[f(X/Xw)-f(Y/Yw)];
b=200[f(Y/Yw)-f(Z/Zw)];
Figure PCTCN2017081209-appb-000024
上述式中t代表X/Xw、Y/Yw、Z/Zw,其中,X、Y、Z为RGB三刺激值。
步骤S23、将第四Lab值与第一Lab值进行比较,一致则进入步骤S24,将第三输入灰阶值进行输出至被测显示器进行显示,不一致,则返回步骤S21,重复步骤S21至步骤S23,直到第四Lab值与第一Lab值一致为止。
如图4所示,本发明的显示器画面生成系统,包括:
获取模块,用于获取一颜色n的LCH值以及获取被测显示器的第一原始值并发送至转换模块进行转换;所述被测显示器的第一原始值的获取可通过色彩分析仪测量被测显示器获得;
转换模块,用于将颜色n的LCH值根据第一原始值转换为第一Lab值;根据第一Lab值和第一原始值进行XYZ值、RGB值、Lab值以及灰阶值之间的转换;所述转换模块将最终转换得到的Lab值发送至判断模块进行判断;
判断模块,用于将Lab值与第一Lab值进行比较,一致则向输出模块发送输出指令,不一致则向校正模块发送校正指令;
输出模块,用于在接收到输出指令后向被测显示器输出相应的灰阶值;
校正模块,用于在接收到校正指令后对灰阶值进行一次修正,并将修正后的灰阶值发送至转换模块;
所述校正模块还用于对灰阶值进行二次修正,并将修正后的灰阶值发送至转换模块。
所述一次修正的方法以及二次修正方法在前述中已经详细阐述,在此不在赘述。
下面将显示器画面生成方法与显示器画面生成系统相结合,简述其具体步骤;
步骤S1、获取模块获取一颜色n的LCH值(明度(L)、色调(H)和色相(C)的值),通过转换模块计算得到第一Lab值;
步骤S2、通过色彩分析仪测量被测显示器获得该被测显示器的第一原始值并发送至获取模块;转换模块将纯白画面三刺激值作为参考值与第一Lab值进行计算得到颜色n的第一三刺激值(X1n、Y1n、Z1n);
步骤S3、转换模块将颜色n的第一三刺激值与第一原始值中的纯红、纯绿、纯蓝时的色度值(xr、xg、xb;yr、yg、yb)及纯白画面三刺激值(Xw、Yw、ZW)进行计算得到第一输出灰阶值(R1out、G1out、B1out);
步骤S4、转换模块将第一输出灰阶值分别与gamma值进行计算,得到输入至显示器的第一输入灰阶值(R1in、G1in、B1in);
步骤S5、转换模块将第一输入灰阶值(R1in、G1in、B1in)与第一原始值中RBG三色的三刺激值进行计算得到第二Lab值并发送至判断模块;
步骤S6、判断模块将第一Lab值与第二Lab值进行比较,一致时,则进入步骤S7,将第一输入灰阶值发送至输出模块,输出模块输出至被测显示器进行显示。
当第一Lab值与第二Lab值进行比较为不一致时,则进入步骤S8,进行一次修正。
所述一次修正包括如下步骤:
步骤S11、转换模块通过第一输入灰阶值(R1in、G1in、B1in)计算得到第一输入灰阶值中R1in、G1in、B1in的三刺激值后再计算得到第一输入灰阶值所对应的颜色n的第三三刺激值(X3n、Y3n、Z3n);
步骤S12、转换模块通过将第三三刺激值进行计算,得到第二输出灰阶值(R2out、G2out、B2out)后发送至校正模块;
步骤S13、校正模块将第二输出灰阶值与第一输入灰阶值所对应的gamma值进行计算得到第二输入灰阶值(R2in、G2in、B2in)后输出至转换模块;
步骤S14、转换模块将第二输入灰阶值通过计算得到第三Lab值,并将第三Lab值发送至判断模块进行判断;
步骤S15、判断模块将第三Lab值与第一Lab值进行比较,一致,则进入步骤S16,将第二输入灰阶值输出至输出模块,输出模块输出至被测显示器进行显示。
当第三Lab值与第一Lab值进行比较为不一致,则进入步骤S17,进行二次修正。
所述二次修正包括如下步骤:
步骤S21、校正模块将第二输入灰阶值(R2in、G2in、B2in)分别依次进行±1~10变动,得到第三输入灰阶值(R3in、G3in、B3in),每次变动后将第三输入灰阶值发送至转换模块进行计算,通过计算得到第三灰阶值所对应的RGB三刺激值;
步骤S22、转换模块将RGB三刺激值通过计算得到第四Lab值并发送至判断模块进行判断;
步骤S23、判断模块将第四Lab值与第一Lab值进行比较,一致则进入步骤S24,判断模块将第三输入灰阶值发送至输出模块,输出模块输出至被测显示器进行显示,不一致,则返回步骤S21,重复步骤S21至步骤S23,直到第四Lab值与第一Lab值一致为止。
虽然已经参照特定实施例示出并描述了本发明,但是本领域的技术人员将理解:在不脱离由权利要求及其等同物限定的本发明的精神和范围的情况下,可在此进行形式和细节上的各种变化。

Claims (19)

  1. 一种显示器画面生成方法,其中:包括如下步骤:
    步骤S1、获取一颜色n的LCH值,通过计算得到第一Lab值;所述第一Lab值通过将颜色n的LCH值转换为Lab得到;
    步骤S2、通过色彩分析仪测量被测显示器获得该被测显示器的第一原始值,所述第一原始值包括R、G、B、W四色全灰阶的三刺激值,R、G、B、W四色的gamma值、纯白画面三刺激值、纯红、纯绿、纯蓝时的色度值;将纯白画面三刺激值作为参考值与第一Lab值进行计算得到颜色n的第一三刺激值;所述第一三刺激值通过将第一Lab值采用Lab值转换为XYZ值得到;
    步骤S3、将颜色n的第一三刺激值与第一原始值中的纯红、纯绿、纯蓝时的色度值及纯白画面三刺激值进行计算得到第一输出灰阶值;所述第一输出灰阶值采用通过XYZ值转换为RGB值得到;
    步骤S4、将第一输出灰阶值分别与gamma值进行计算,得到输入至显示器的第一输入灰阶值;
    步骤S5、将第一输入灰阶值与第一原始值中RBG三色的三刺激值进行计算得到第二Lab值;
    步骤S6、将第一Lab值与第二Lab值进行比较,一致时,则进入步骤S7,将第一输入灰阶值输出至被测显示器进行显示。
  2. 根据权利要求1所述的显示器画面生成方法,其中:所述步骤S5中将第一输入灰阶值与第一原始值中RBG三色的三刺激值进行计算得到第二Lab值通过如下方式得到:将RGB三色的三刺激值进行混色;得到颜色n的第二三刺激值;在获得了颜色n的第二三刺激值后,通过XYZ值转换Lab值获得第二Lab值。
  3. 根据权利要求1所述的显示器画面生成方法,其中:所述步骤S6中,当第一Lab值与第二Lab值进行比较为不一致时,则进入步骤S8,进行一次修正。
  4. 根据权利要求2所述的显示器画面生成方法,其中:所述步骤S6中,当第一Lab值与第二Lab值进行比较为不一致时,则进入步骤S8,进行一次修正。
  5. 根据权利要求3所述的显示器画面生成方法,其中:所述一次修正包括如下步骤:
    步骤S11、通过第一输入灰阶值计算得到第一输入灰阶值中R1in、G1in、B1in的三刺激值后再计算得到第一输入灰阶值所对应的颜色n的第三三刺激值;所述第三三刺激值通过将第一输入灰阶值通过RGB值转换XYZ值得到;
    步骤S12、通过将第三三刺激值进行计算,得到第二输出灰阶值;所述第二输出灰阶值通过将第三三刺激值通过XYZ值转换RGB值得到;
    步骤S13、将第二输出灰阶值与第一输入灰阶值所对应的gamma值进行计算得到第二输入灰阶值后输出;
    步骤S14、将第二输入灰阶值通过计算得到第三Lab值;
    步骤S15、将第三Lab值与第一Lab值进行比较,一致,则进入步骤S16,将第二输入灰阶值输出至被测显示器进行显示。
  6. 根据权利要求4所述的显示器画面生成方法,其中:所述一次修正包括如下步骤:
    步骤S11、通过第一输入灰阶值计算得到第一输入灰阶值中R1in、G1in、B1in的三刺激值后再计算得到第一输入灰阶值所对应的颜色n的第三三刺激值;所述第三三刺激值通过将第一输入灰阶值通过RGB值转换XYZ值得到;
    步骤S12、通过将第三三刺激值进行计算,得到第二输出灰阶值;所述第二输出灰阶值通过将第三三刺激值通过XYZ值转换RGB值得到;
    步骤S13、将第二输出灰阶值与第一输入灰阶值所对应的gamma值进行计算得到第二输入灰阶值后输出;
    步骤S14、将第二输入灰阶值通过计算得到第三Lab值;
    步骤S15、将第三Lab值与第一Lab值进行比较,一致,则进入步骤S16,将第二输入灰阶值输出至被测显示器进行显示。
  7. 根据权利要求5所述的显示器画面生成方法,其中:所述步骤S14中将第二输入灰阶值通过计算得到第三Lab值采用如下方式获得:获得第二输入灰阶值后通过RGB值转XYZ值得到第二输入灰阶值所对应的RGB三刺激值;将得到的RGB三刺激值通过XYZ值转换Lab值得到第三Lab值。
  8. 根据权利要求6所述的显示器画面生成方法,其中:所述步骤S14中将第二输入灰阶值通过计算得到第三Lab值采用如下方式获得:获得第二输入灰阶值后通过RGB值转XYZ值得到第二输入灰阶值所对应的RGB三刺激值;将得到的RGB三刺激值通过XYZ值转换Lab值得到第三Lab值。
  9. 根据权利要求5所述的显示器画面生成方法,其中:所述步骤S15中,当第三Lab值与第一Lab值进行比较为不一致,则进入步骤S17,进行二次修正。
  10. 根据权利要求6所述的显示器画面生成方法,其中:所述步骤S15中,当第三Lab值与第一Lab值进行比较为不一致,则进入步骤S17,进行二次修正。
  11. 根据权利要求7所述的显示器画面生成方法,其中:所述步骤S15中,当第三Lab值与第一Lab值进行比较为不一致,则进入步骤S17,进行二次修正。
  12. 根据权利要求9所述的显示器画面生成方法,其中:所述二次修正包括如下步骤:
    步骤S21、将第二输入灰阶值分别同时并且依次进行±1~10变动,得到第三输入灰阶值,每次变动后将第三输入灰阶值通过计算得到第三灰阶值所对应的RGB三刺激值;所述第三三刺激值通过将第一输入灰阶值采用RGB值转换XYZ值得到;
    步骤S22、将RGB三刺激值通过计算得到第四Lab值;所述第四Lab值通过将RGB三刺激值通过XYZ值转换Lab值得到;
    步骤S23、将第四Lab值与第一Lab值进行比较,一致则进入步骤S24,将第三输入灰阶值进行输出至被测显示器进行显示。
  13. 根据权利要求10所述的显示器画面生成方法,其中:所述二次修正包括如下步骤:
    步骤S21、将第二输入灰阶值分别同时并且依次进行±1~10变动,得到第三输入灰阶值,每次变动后将第三输入灰阶值通过计算得到第三灰阶值所对应的RGB三刺激值;所述第三三刺激值通过将第一输入灰阶值采用RGB值转换XYZ值得到;
    步骤S22、将RGB三刺激值通过计算得到第四Lab值;所述第四Lab值通过将RGB三刺激值通过XYZ值转换Lab值得到;
    步骤S23、将第四Lab值与第一Lab值进行比较,一致则进入步骤S24,将第三输入灰阶值进行输出至被测显示器进行显示。
  14. 根据权利要求11所述的显示器画面生成方法,其中:所述二次修正包括如下步骤:
    步骤S21、将第二输入灰阶值分别同时并且依次进行±1~10变动,得到第三输入灰阶值,每次变动后将第三输入灰阶值通过计算得到第三灰阶值所对应的RGB三刺激值;所述第三三刺激值通过将第一输入灰阶值采用RGB值转换XYZ值得到;
    步骤S22、将RGB三刺激值通过计算得到第四Lab值;所述第四Lab值通过将RGB三刺激值通过XYZ值转换Lab值得到;
    步骤S23、将第四Lab值与第一Lab值进行比较,一致则进入步骤S24,将第三输入灰阶值进行输出至被测显示器进行显示。
  15. 根据权利要求12所述的显示器画面生成方法,其中:所述步骤S23中将第四Lab值与第一Lab值进行比较,不一致,则返回步骤S21,重复步骤S21至步骤S23,直到第四Lab值与第一Lab值一致为止。
  16. 根据权利要求13所述的显示器画面生成方法,其中:所述步骤S23 中将第四Lab值与第一Lab值进行比较,不一致,则返回步骤S21,重复步骤S21至步骤S23,直到第四Lab值与第一Lab值一致为止。
  17. 根据权利要求14所述的显示器画面生成方法,其中:所述步骤S23中将第四Lab值与第一Lab值进行比较,不一致,则返回步骤S21,重复步骤S21至步骤S23,直到第四Lab值与第一Lab值一致为止。
  18. 一种显示器画面生成系统,其中:该系统包括:
    获取模块,用于获取一颜色n的LCH值以及获取被测显示器的第一原始值并发送至转换模块进行转换;
    转换模块,用于将颜色n的LCH值根据第一原始值转换为第一Lab值;根据第一Lab值和第一原始值进行XYZ值、RGB值、Lab值以及灰阶值之间的转换;
    判断模块,用于将Lab值与第一Lab值进行比较,一致则向输出模块发送输出指令,不一致则向校正模块发送校正指令;
    输出模块,用于在接收到输出指令后向被测显示器输出相应的灰阶值;
    校正模块,用于在接收到校正指令后对灰阶值进行一次修正,并将修正后的灰阶值发送至转换模块。
  19. 根据权利要求18所述的显示器画面生成系统,其中:所述校正模块还用于对灰阶值进行二次修正,并将修正后的灰阶值发送至转换模块。
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