WO2021056700A1 - 改善有色人种肤色视角表现的设计方法及系统 - Google Patents

改善有色人种肤色视角表现的设计方法及系统 Download PDF

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WO2021056700A1
WO2021056700A1 PCT/CN2019/116230 CN2019116230W WO2021056700A1 WO 2021056700 A1 WO2021056700 A1 WO 2021056700A1 CN 2019116230 W CN2019116230 W CN 2019116230W WO 2021056700 A1 WO2021056700 A1 WO 2021056700A1
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viewing angle
pixel
value
under
rgb
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PCT/CN2019/116230
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English (en)
French (fr)
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林月粗
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惠州市华星光电技术有限公司
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Priority to US16/615,136 priority Critical patent/US20220051601A1/en
Publication of WO2021056700A1 publication Critical patent/WO2021056700A1/zh

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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
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2003—Display of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • 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
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours
    • 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
    • G09G2320/028—Improving the quality of display appearance by changing the viewing angle properties, e.g. widening the viewing angle, adapting the viewing angle to the view direction
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2380/00—Specific applications
    • G09G2380/08—Biomedical applications

Definitions

  • This application relates to the field of display technology, and in particular to a design method and system for improving the visual angle performance of the skin color of people of color.
  • VA Very aligned, vertical alignment type
  • VA Very aligned, vertical alignment type
  • the 8-domain pixel design divides the pixel into two parts, the main pixel and the sub-pixel, and gives the main pixel and the sub-pixel different voltages and areas, so that the main pixel and the sub-pixel display different gray levels, and the viewing angle is improved through spatial mixing. Effect.
  • the performance of the viewing angle is not the same, and the viewing angle is quite different.
  • the present application provides a design method and system for the visual representation of the skin color of colored people, which can effectively reduce the difference in the visual angle display of the skin color of the colored people under different angles of view, so as to solve the existing problem of the skin color of the colored people.
  • the design method and system under different angles of view, there is a technical problem of large differences in viewing angles.
  • This application provides a design method for improving the visual angle performance of the skin color of people of color.
  • the method includes:
  • S50 Counting the characteristic RGB grayscale values of the skin color of the colored people through matlab software, and calculating the Yxy value of the picture composed of the characteristic RGB grayscale values under the preset viewing angle;
  • S60 Calculate the difference between the Yxy value of the picture composed of the RGB grayscale values of the skin color characteristics of the colored race under the front view and the Yxy value of the picture composed of the RGB grayscale values of the colored race skin color characteristics under the side view, according to the For the relationship between the difference value and the viewing angle specification value, the proportion of RGB in each pixel is reset.
  • the S20 further includes:
  • the S30 further includes:
  • the S50 further includes:
  • S501 Calculate the RGB grayscale values of the skin color feature of the colored race through matlab software, and calculate the XYZ value of the skin color feature RGB of the colored race under the preset viewing angle;
  • S502 Calculate the Yxy value of the skin color feature RGB of the colored race under the preset viewing angle according to the XYZ value of the skin color feature RGB of the colored race under the preset viewing angle.
  • the S502 further includes:
  • the RGB in each pixel is re-adjusted and set And repeat S20 to S50 to make the difference meet the viewing angle specification value; when the difference meets the viewing angle specification value, no adjustment is made.
  • the present application also provides a design system for improving the visual angle performance of the skin color of people of color, the system including:
  • the acquiring unit is used to collect the VT curve of WRGB in each pixel and the XYZ value of each gray scale under each preset viewing angle when the proportion of RGB in each pixel is the same, the preset viewing angle is at least Including front view and side view;
  • the setting unit is used to reset the proportion of RGB in each pixel, and calculate the V-T curve of WRGB in each pixel under the preset viewing angle and the XYZ value of each gray scale;
  • the first adjustment unit is configured to calculate the brightness value of each gray level in each pixel when the preset voltage is set at 255 gray level or the highest gray level and based on the front view angle gamma value of 2.2;
  • the second adjustment unit is configured to adjust the white balance of each pixel, and confirm the gray scale value of each gray scale under the white balance;
  • a calculating unit counting the characteristic RGB grayscale values of the skin color of colored people through matlab software, and calculating the Yxy value of the picture composed of the characteristic RGB grayscale values under the preset viewing angle;
  • the third adjustment unit calculates the difference between the Yxy value of the picture composed of the RGB grayscale values of the skin color feature of the colored race under the front viewing angle and the Yxy value of the picture composed of the RGB grayscale value of the colored race skin color feature under the side viewing angle, and According to the size relationship between the difference value and the viewing angle specification value, the proportion of RGB in each pixel is reset.
  • the setting unit is used for:
  • each of the pixels set the proportion of the R sub-pixel to p1, set the proportion of the G sub-pixel to p2, and set the proportion of the B sub-pixel to p3, p1, p2, and p3
  • the sum of the three is 1.
  • the first adjustment unit is used for:
  • each pixel 0 gray scale under the preset viewing angle Obtains the brightness value of each pixel 0 gray scale under the preset viewing angle according to the XYZ value of each pixel 0 gray scale under the preset viewing angle, and according to 255 each pixel under the preset viewing angle
  • the XYZ value of the gray scale obtains the brightness value of each pixel at the 255 gray scale under the preset viewing angle; according to the formula Calculate the brightness value of each gray level in each pixel under the preset viewing angle, where a is the brightness value of each pixel at 0 gray level under the preset viewing angle, and the b is the preset viewing angle.
  • the n is the gray scale value corresponding to each pixel under the preset viewing angle
  • the z is the gamma value 2.2
  • the c is the The brightness value of each gray scale in each pixel under the preset viewing angle.
  • the calculation unit is used for:
  • the design method for improving the visual angle performance of the skin color of people of color provided by this application is to adjust the proportions of the red sub-pixels, green sub-pixels and blue sub-pixels in the pixels to make the colored people
  • the Yxy value of the skin color characteristic RGB front view angle and the Yxy value of the side view view angle meet the preset specification values, which solves the problem of large visual display differences between different skin color races caused by the prior art.
  • Figure 1 is a flow chart of the design method for improving the visual performance of the skin color of people of color in this application.
  • Figure 2 is a structural diagram of a design system for improving the visual performance of the skin color of people of color in this application.
  • the present application is directed to the existing design method and system for the visual representation of the skin color of people of color. Under different viewing angles, there is a technical problem of large differences in viewing angle display, and this embodiment can solve this defect.
  • this application is a flow chart of the design method for improving the visual performance of the skin color of people of color.
  • the method includes:
  • the S10 further includes:
  • the proportion of RGB in each pixel is the same, that is, the proportion of R (red) sub-pixel is set to 1/3, and the proportion of G (green) sub-pixel is set The proportion is 1/3, and the proportion of B (blue) sub-pixels is set to 1/3.
  • Each of the 256-level preset voltages corresponds to different gray levels of W (white), R, G, and B.
  • a voltage also corresponds to the three stimulus values (XYZ values) of W, R, G, and B at the preset viewing angle and the VT (voltage-transmittance, voltage-transmittance) curve.
  • the tristimulus value X 0 Y 0 Z 0 and the V 0 -T 0 curve can be obtained by using the specific gravity when RGB is 1/3. It should be noted that for an 8-domain pixel whose parameters have been determined, the voltage is determined, and the XYZ values of 90° and 45° are different, that is, the angle is different, and the brightness is different. Preferably, the front view angle is 90°, and the side view angle of view may be 30°, 45° or 60°.
  • S20 Reset the proportion of RGB in each pixel, and calculate the V-T curve of WRGB in each pixel and the XYZ value of each gray scale under the preset viewing angle.
  • the S20 further includes:
  • the proportion of R sub-pixel is set to p1
  • the proportion of G sub-pixel is set to p2
  • the proportion of B sub-pixel is set
  • the proportion of pixels is p3, and the sum of p1, p2, and p3 is 1.
  • the VT curve of WRGB and the XYZ value of each gray scale in each pixel at this time are calculated under the preset viewing angle .
  • the S30 further includes:
  • the XYZ value of the 255 gray scale of the pixel obtains the brightness value of each of the 255 gray scales of the pixel under the preset viewing angle; then, according to the formula Calculate the brightness value of each gray level in each pixel under the preset viewing angle, where a is the brightness value of each pixel at 0 gray level under the preset viewing angle, and the b is the preset viewing angle.
  • the n is the gray scale value corresponding to each pixel under the preset viewing angle
  • the z is the gamma value 2.2
  • the c is the The brightness value of each gray scale in each pixel under the preset viewing angle.
  • S40 Perform white balance adjustment on each of the pixels, and confirm the grayscale value of each grayscale under the white balance.
  • the S40 further includes:
  • the gray scale value of W is equal to the gray scale value of R, the gray scale value of G, and the gray scale value of B.
  • the gray scale value of W is not necessarily equal to the gray scale value of R, the gray scale value of G, and the gray scale value of B.
  • S50 Calculate the characteristic RGB grayscale values of the skin color of the colored race by mathematical software, and calculate the Yxy value of the picture composed of the characteristic RGB grayscale values under the preset viewing angle.
  • the S50 further includes:
  • the RGB values of different regions of the colored people in a picture are extracted by matlab mathematics software, and the average value is taken to obtain the XYZ value of the RGB skin color feature of the colored people under the preset viewing angle.
  • the value of the colored race skin color feature RGB under the preset viewing angle is obtained. Yxy value.
  • S60 Calculate the difference between the Yxy value of the picture composed of the RGB grayscale values of the skin color characteristics of the colored race under the front view and the Yxy value of the picture composed of the RGB grayscale values of the colored race skin color characteristics under the side view, according to the For the relationship between the difference value and the viewing angle specification value, the proportion of RGB in each pixel is reset.
  • the S60 further includes:
  • adjust the proportion of RGB to 1/3 each set the proportion of R sub-pixel to 0.375, set the proportion of G sub-pixel to 0.375, and set the proportion of B sub-pixel
  • the specific gravity is 0.25.
  • this application is a structural diagram of the design system for improving the visual performance of the skin color of people of color.
  • the present application also provides a design system for improving the performance of the skin color of people of color.
  • the system includes: an acquisition unit 21, a setting unit 22, a first adjustment unit 23, a second adjustment unit 24, a calculation unit 25, and a first adjustment unit.
  • the acquiring unit 21 is used to collect the VT curve of WRGB and the XYZ value of each gray scale in each pixel under each preset viewing angle when the proportion of RGB in each pixel is the same.
  • the preset angle of view includes at least a front view angle and a side view angle.
  • the setting unit 22 is configured to reset the proportion of RGB in each pixel, and calculate the VT curve of WRGB in each pixel under the preset viewing angle and the XYZ of each gray scale. value. Specifically: in each of the pixels, the proportion of the R sub-pixel is set to p1, the proportion of the G sub-pixel is set to p2, and the proportion of the B sub-pixel is set to p3, p1, p2 The sum of the three of p3 and p3 is 1.
  • the reset is calculated After determining the proportion of RGB in each pixel, the VT curve of WRGB in each pixel and the XYZ value of each gray scale under the predetermined viewing angle.
  • the first adjustment unit 23 is configured to calculate the brightness value of each gray level in each pixel when the preset voltage of 255 gray level or the highest gray level is set and the gamma value of the front view angle is 2.2. , Specifically includes: in each of the pixels, the proportion of the R sub-pixel is set to p1, the proportion of the G sub-pixel is set to p2, and the proportion of the B sub-pixel is set to p3, p1, The sum of the three of p2 and p3 is 1.
  • the second adjustment unit 24 is configured to adjust the white balance of each pixel, and confirm the grayscale value of each grayscale under the white balance.
  • the third adjustment unit 26 is mainly used to calculate the Yxy value of the picture composed of the RGB grayscale values of the skin color feature of the colored race under the front viewing angle and the RGB grayscale value of the skin color feature of the colored race under the side viewing angle. According to the difference between the Yxy values of the screen and the size relationship between the difference and the viewing angle specification value, the proportion of RGB in each pixel is reset.
  • the third adjusting unit 26 is used to readjust and set the proportion of RGB in each pixel, and the third adjusting unit 26 is used to adjust and set the proportion of RGB in each pixel.
  • An adjustment unit 23, the second adjustment unit 24, and the calculation unit 25 process to make the difference meet the viewing angle specification value; when the difference meets the viewing angle specification value, no adjustment is made.
  • This application is based on the measured VT curve and XYZ data of the full grayscale at different angles under the normal RGB pixel arrangement.
  • the simulation obtains the WRGB full grayscale at different angles under the above specific gravity.
  • VT and XYZ data Then, by extracting the characteristic RGB grayscale values of the image to be improved in the viewing angle, the viewing angle performance corresponding to the characteristic RGB under different angles can be simulated.
  • the viewing angle performance of the picture to be improved can be improved to meet the specification requirements, which can effectively improve the skin color viewing angle problem.
  • the design method for improving the visual angle performance of the skin color of people of color provided by this application is to adjust the proportions of the red sub-pixels, green sub-pixels and blue sub-pixels in the pixels to make the colored people
  • the Yxy value of the skin color characteristic RGB front view angle and the Yxy value of the side view view angle meet the preset specification values, which solves the problem of large visual display differences between different skin color races caused by the prior art.

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Abstract

一种改善有色人种肤色视角表现的设计方法及设计系统，其主要以量测RGB比重相同时不同角度的WRGB的V-T曲线和XYZ数据为基础，通过设定RGB不同的比重，模拟得到上述比重下不同角度的WRGB的V-T曲线和XYZ数据；通过提取需改善视角画面的特征RGB灰阶值，模拟得到不同角度下该特征RGB对应的视角表现；不断调整RGB比重，使其满足规格要求。

Description

改善有色人种肤色视角表现的设计方法及系统 技术领域
本申请涉及显示技术领域，尤其涉及一种改善有色人种肤色视角表现的设计方法及系统。
背景技术
目前在液晶面板显示领域，VA(Vertically aligned，垂直配向型)显示模式存在着明显的大视角色偏及泛白等视角问题。因此，针对VA显示模式存在的视角问题，有人提出了8畴像素设计用于改善视角状况。8畴像素设计通过将像素分成主像素和副像素两部分，分别给予主像素和副像素不同的电压和面积，使得主像素和副像素显示不同的灰阶，通过空间上的混合，达到改善视角的效果。然而，对于不同肤色人种，其视角问题的表现并不相同，其视角显示差异较大。
综上所述，现有的有色人种肤色视角表现的设计方法及系统，在不同角度的视角下，存在着视角显示差异较大问题。
技术问题
现有的有色人种肤色视角表现的设计方法及系统，在不同角度的视角下，存在着视角显示差异较大问题。
技术解决方案
本申请提供一种有色人种肤色视角表现的设计方法及系统，能够有效减少在不同角度的视角下，有色人种肤色视角表现的视角显示差异，以解决现有的有色人种肤色视角表现的设计方法及 系统，在不同角度的视角下，存在着视角显示差异较大的技术问题。
为解决上述问题，本申请提供的技术方案如下：
本申请提供一种改善有色人种肤色视角表现的设计方法，所述方法包括：
S10，在每一像素中RGB的占比比重相同的情况下，采集每一预设视角下每一像素中WRGB的V-T曲线及每一灰阶的XYZ值，所述预设视角至少包括正视视角和侧视视角；
S20，重新设定每一所述像素中RGB的占比比重，计算所述预设视角下每一所述像素中WRGB的V-T曲线及每一灰阶的XYZ值；
S30，在255灰阶或最高灰阶预设电压设置下，基于正视角度伽玛值为2.2情况下计算每一所述像素中每一灰阶的亮度值；
S40，对每一所述像素进行白平衡调整，确认白平衡下每一灰阶的灰阶值；
S50，通过matlab软件统计有色人种肤色特征RGB灰阶值，计算所述预设视角下所述特征RGB灰阶值所组成的画面的Yxy值；
S60，计算正视视角下有色人种肤色特征RGB灰阶值所组成的画面的Yxy值与侧视视角下有色人种肤色特征RGB灰阶值所组成的画面的Yxy值的差值，根据所述差值与视角规格值的大小关系，重新设定每一所述像素中RGB的占比比重。
在本申请实施例所提供的改善有色人种肤色视角表现的设计方法中，所述S20还包括：
S201，在每一所述像素中，设定R子像素的占比比重为p1，设定G子像素的占比比重为p2，设定B子像素的占比比重为p3，p1、p2与p3的三者之和为1；
S202，根据p1＝p2＝p3＝1/3时对应的每一预设视角下每一像素中WRGB的V-T曲线及每一灰阶的XYZ值，计算出重新设定每一所述像素中RGB的占比比重后，所述预设视角下每一所述像素中WRGB的V-T曲线及每一灰阶的XYZ值。
在本申请实施例所提供的改善有色人种肤色视角表现的设计方法中，所述S30还包括：
S301，根据所述预设视角下每一所述像素0灰阶的XYZ值获取所述预设视角下每一所述像素0灰阶的亮度值，根据所述预设视角下每一所述像素255灰阶的XYZ值获取所述预设视角下每一所述像素255灰阶的亮度值；
S302，根据公式
Figure PCTCN2019116230-appb-000001
计算所述预设视角下每一所述像素中每一灰阶的亮度值，所述a为所述预设视角下每一所述像素0灰阶的亮度值，所述b为所述预设视角下每一所述像素255灰阶的亮度值，所述n为所述预设视角下每一所述像素对应的灰阶值，所述z为伽玛值2.2，所述c为所述预设视角下每一所述像素中每一灰阶的亮度值。
在本申请实施例所提供的改善有色人种肤色视角表现的设计方法中，所述S50还包括：
S501，通过matlab软件统计有色人种肤色特征RGB灰阶值，计算所述预设视角下所述有色人种肤色特征RGB的XYZ值；
S502，根据所述预设视角下所述有色人种肤色特征RGB的XYZ值，计算所述预设视角下所述有色人种肤色特征RGB的Yxy值。
在本申请实施例所提供的改善有色人种肤色视角表现的设计方法中，所述S502还包括：
S5021，根据所述预设视角下所述有色人种肤色特征RGB的XYZ值，计算x以及y；其中，x＝X/(X+Y+Z)，y＝Y/(X+Y+Z)，所述x、y为色坐标值，所述XYZ值包括X、Y和Z；
S5022，根据计算得到的x、y以及从所述所述预设视角下所述有色人种肤色特征RGB的XYZ值提取的Y，得到所述预设视角下所述有色人种肤色特征RGB的Yxy值。
在本申请实施例所提供的改善有色人种肤色视角表现的设计方法中，所述S60中，当所述差值不满足所述视角规格值时，重新调整设定每一所述像素中RGB的占比比重，并重复S20至S50，使所述差值满足所述视角规格值；当所述差值满足所述视角规格值时，不做任何调整。
本申请还提供一种改善有色人种肤色视角表现的设计系统，所述系统包括：
获取单元，用于在每一像素中RGB的占比比重相同的情况下，采集每一预设视角下每一像素中WRGB的V-T曲线及每一灰阶的XYZ值，所述预设视角至少包括正视视角和侧视视角；
设定单元，用于重新设定每一所述像素中RGB的占比比重，计算所述预设视角下每一所述像素中WRGB的V-T曲线及每一灰 阶的XYZ值；
第一调整单元，用于在255灰阶或最高灰阶预设电压设置并基于正视角度伽玛值为2.2情况下，计算每一所述像素中每一灰阶的亮度值；
第二调整单元，用于对每一所述像素进行白平衡调整，确认白平衡下每一灰阶的灰阶值；
计算单元，通过matlab软件统计有色人种肤色特征RGB灰阶值，计算所述预设视角下所述特征RGB灰阶值所组成的画面的Yxy值；
第三调整单元，计算正视视角下有色人种肤色特征RGB灰阶值所组成的画面的Yxy值与侧视视角下有色人种肤色特征RGB灰阶值所组成的画面的Yxy值的差值，根据所述差值与视角规格值的大小关系，重新设定每一所述像素中RGB的占比比重。
在本申请实施例所提供的改善有色人种肤色视角表现的设计系统中，所述设定单元用于：
在每一所述像素中，设定R子像素的占比比重为p1，设定G子像素的占比比重为p2，设定B子像素的占比比重为p3，p1、p2与p3的三者之和为1；根据p1＝p2＝p3＝1/3时对应的每一预设视角下每一像素中WRGB的V-T曲线及每一灰阶的XYZ值，计算出重新设定每一所述像素中RGB的占比比重后，所述预设视角下每一所述像素中WRGB的V-T曲线及每一灰阶的XYZ值。
在本申请实施例所提供的改善有色人种肤色视角表现的设计系统中，所述第一调整单元用于：
根据所述预设视角下每一所述像素0灰阶的XYZ值获取所述预设视角下每一所述像素0灰阶的亮度值，根据所述预设视角下每一所述像素255灰阶的XYZ值获取所述预设视角下每一所述像素255灰阶的亮度值；根据公式
Figure PCTCN2019116230-appb-000002
计算所述预设视角下每一所述像素中每一灰阶的亮度值，所述a为所述预设视角下每一所述像素0灰阶的亮度值，所述b为所述预设视角下每一所述像素255灰阶的亮度值，所述n为所述预设视角下每一所述像素对应的灰阶值，所述z为伽玛值2.2，所述c为所述预设视角下每一所述像素中每一灰阶的亮度值。
在本申请实施例所提供的改善有色人种肤色视角表现的设计系统中，所述计算单元用于：
根据所述预设视角下所述有色人种肤色特征RGB的XYZ值，计算x以及y；其中，x＝X/(X+Y+Z)，y＝Y/(X+Y+Z)，所述x、y为色坐标值，所述XYZ值包括X、Y和Z；根据计算得到的x、y以及从所述所述预设视角下所述有色人种肤色特征RGB的XYZ值提取的Y，得到所述预设视角下所述有色人种肤色特征RGB的Yxy值。
有益效果
本申请的有益效果为：本申请所提供的改善有色人种肤色视角表现的设计方法，通过调整像素中红色子像素、绿色子像素以及蓝色子像素之间的占比比重，使得有色人种肤色特征RGB正视视角的Yxy值与侧视视角的Yxy值满足预设规格值，解决了现有技 术导致的不同肤色人种视觉显示差异较大的问题。
附图说明
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请改善有色人种肤色视角表现的设计方法流程图。
图2为本申请改善有色人种肤色视角表现的设计系统的结构图。
本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本申请可用以实施的特定实施例。本申请所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本申请，而非用以限制本申请。在图中，结构相似的单元是用以相同标号表示。
本申请针对现有的有色人种肤色视角表现的设计方法及系统，在不同角度的视角下，存在着视角显示差异较大的技术问题，本实施例能够解决该缺陷。
如图1所示，为本申请改善有色人种肤色视角表现的设计方法流程图。其中，所述方法包括：
S10，在每一像素中RGB的占比比重相同的情况下，采集每一预设视角下每一像素中WRGB的V-T曲线及每一灰阶的XYZ值，所述预设视角至少包括正视视角和侧视视角。
具体地，所述S10还包括：
在256阶预设电压作用下，使每一像素中RGB的占比比重相同，即设定R(红色)子像素的占比比重为1/3，设定G(绿色)子像素的占比比重为1/3，设定B(蓝色)子像素的占比比重为1/3。256阶预设电压中每一电压对应W(白色)、R、G、B的不同灰阶，每一电压同样对应预设视角的W、R、G、B的三刺激值(XYZ值)以及V-T(voltage-transmittance,电压-透过率)曲线。因此，通过RGB均为1/3时的比重，可以得到此时的三刺激值X 0Y 0Z 0以及V 0-T 0曲线。需要说明的是，对于一个参数已经确定的8畴像素，电压确定，90°和45°的XYZ值并不一样，即角度不一样，亮度也不一样。优选地，正视角度的角度为90°，侧视视角的角度可以为30°、45°或者60°。
S20，重新设定每一所述像素中RGB的占比比重，计算所述预设视角下每一所述像素中WRGB的V-T曲线及每一灰阶的XYZ值。
具体地，所述S20还包括：
在256阶预设电压作用下，在所述预设视角下的每一像素中，设定R子像素的占比比重为p1，设定G子像素的占比比重为p2，设定B子像素的占比比重为p3，p1、p2与p3的三者之和为1。之后，根据所述X 0Y 0Z 0值以及V 0-T 0曲线，计算出在所述预设视 角下，此时每一所述像素中WRGB的V-T曲线及每一灰阶的XYZ值。
S30，在255灰阶或最高灰阶预设电压设置下，基于正视角度伽玛值为2.2情况下计算每一所述像素中每一灰阶的亮度值。
具体地，所述S30还包括：
首先，根据所述预设视角下每一所述像素0灰阶的XYZ值获取所述预设视角下每一所述像素0灰阶的亮度值，根据所述预设视角下每一所述像素255灰阶的XYZ值获取所述预设视角下每一所述像素255灰阶的亮度值；之后，根据公式
Figure PCTCN2019116230-appb-000003
计算所述预设视角下每一所述像素中每一灰阶的亮度值，所述a为所述预设视角下每一所述像素0灰阶的亮度值，所述b为所述预设视角下每一所述像素255灰阶的亮度值，所述n为所述预设视角下每一所述像素对应的灰阶值，所述z为伽玛值2.2，所述c为所述预设视角下每一所述像素中每一灰阶的亮度值。其中，基于Gamma＝2.2的调整是为了让亮度更加均匀，适合人眼观看。
S40，对每一所述像素进行白平衡调整，确认白平衡下每一灰阶的灰阶值。
具体地，所述S40还包括：
对每一所述像素进行白平衡调整，一方面要求满足伽马值为2.2的调整，另一方面要求其他灰阶对应的色坐标值x和y分别和255灰阶的色坐标值x和y相等。在没有进行白平衡调整前，W的灰阶值与R的灰阶值、G的灰阶值、B的灰阶值都相等。在进行白平衡调整后，W的灰阶值与R的灰阶值、G的灰阶值、B 的灰阶值并不一定完全相等。
S50，通过数学软件统计有色人种肤色特征RGB灰阶值，计算所述预设视角下所述特征RGB灰阶值所组成的画面的Yxy值。
具体地，所述S50还包括：
首先，通过matlab数学软件提取一张图片上有色人种不同区域的RGB值，并取平均值，得到所述预设视角下所述有色人种肤色特征RGB的XYZ值。之后，根据所述预设视角下所述有色人种肤色特征RGB的XYZ值，计算x以及y；其中，x＝X/(X+Y+Z)，y＝Y/(X+Y+Z)，所述x、y为色坐标值，所述XYZ值包括X、Y和Z。最后，根据计算得到的x、y以及从所述所述预设视角下所述有色人种肤色特征RGB的XYZ值提取的Y，得到所述预设视角下所述有色人种肤色特征RGB的Yxy值。
S60，计算正视视角下有色人种肤色特征RGB灰阶值所组成的画面的Yxy值与侧视视角下有色人种肤色特征RGB灰阶值所组成的画面的Yxy值的差值，根据所述差值与视角规格值的大小关系，重新设定每一所述像素中RGB的占比比重。
具体地，所述S60还包括：
分别计算正视视角下有色人种肤色特征RGB灰阶值所组成的画面的Yxy值与侧视视角下有色人种肤色特征RGB灰阶值所组成的画面的Yxy值的差值，根据所述差值与视角规格值的大小关系，重新设定每一所述像素中RGB的占比比重，当所述差值不满足所述视角规格值时，重新调整设定每一所述像素中RGB的占比比重，并重复S20至S50，使所述差值满足所述视角规格值； 当所述差值满足所述视角规格值时，不做任何调整。
以RGB＝179/140/102的肤色画面为例，该肤色画面在正视情况下的色坐标为x0和y0，侧视30度下的色坐标为x30和y30，以△x＝x0-x30，△y＝y0-y30作为评估肤色画面的视角变化，△x和△y越小，代表肤色画面的视角越好。通过像素排列方式的变更，将RGB占比比重各1/3调整成，设定R子像素的占比比重为0.375，设定G子像素的占比比重为0.375，设定B子像素的占比比重为0.25。
我们得到了如表1所示的数据。从表1可以看出，RGB比重的变化，使得△x从0.022变化为0.018，△y从0.013变化为0.0025，此时肤色画面的视角得到了有效的改善。因此，可以看到，通过B子像素比重的调整使视角得到大大改善。
pixel排列方式 △x △y
R＝1/3；G＝1/3；B＝1/3 0.022 0.013
R＝3/8；G＝3/8；B＝1/4 0.018 0.0025
表1
如图2所示，为本申请改善有色人种肤色视角表现的设计系统的结构图。其中，本申请还提供一种改善有色人种肤色视角表现的设计系统，所述系统包括：获取单元21、设定单元22、第一调整单元23、第二调整单元24、计算单元25以及第三调整单元。
具体地，所述获取单元21用于在每一像素中RGB的占比比重相同的情况下，采集每一预设视角下每一像素中WRGB的V-T曲线及每一灰阶的XYZ值，所述预设视角至少包括正视视角和侧视视 角。
具体地，所述设定单元22用于重新设定每一所述像素中RGB的占比比重，计算所述预设视角下每一所述像素中WRGB的V-T曲线及每一灰阶的XYZ值。具体包括：在每一所述像素中，设定R子像素的占比比重为p1，设定G子像素的占比比重为p2，设定B子像素的占比比重为p3，p1、p2与p3的三者之和为1；根据p1＝p2＝p3＝1/3时对应的每一预设视角下每一像素中WRGB的V-T曲线及每一灰阶的XYZ值，计算出重新设定每一所述像素中RGB的占比比重后，所述预设视角下每一所述像素中WRGB的V-T曲线及每一灰阶的XYZ值。
具体地，所述第一调整单元23用于在255灰阶或最高灰阶预设电压设置并基于正视角度伽玛值为2.2情况下，计算每一所述像素中每一灰阶的亮度值，具体包括：在每一所述像素中，设定R子像素的占比比重为p1，设定G子像素的占比比重为p2，设定B子像素的占比比重为p3，p1、p2与p3的三者之和为1；根据p1＝p2＝p3＝1/3时对应的每一预设视角下每一像素中WRGB的V-T曲线及每一灰阶的XYZ值，计算出重新设定每一所述像素中RGB的占比比重后，所述预设视角下每一所述像素中WRGB的V-T曲线及每一灰阶的XYZ值。
具体地，所述第二调整单元24用于对每一所述像素进行白平衡调整，确认白平衡下每一灰阶的灰阶值。
具体地，所述计算单元25通过matlab软件统计有色人种肤色特征RGB灰阶值，计算所述预设视角下所述特征RGB灰阶值所组 成的画面的Yxy值，具体包括：根据所述预设视角下所述有色人种肤色特征RGB的XYZ值，计算x以及y；其中，x＝X/(X+Y+Z)，y＝Y/(X+Y+Z)，所述x、y为色坐标值，所述XYZ值包括X、Y和Z；根据计算得到的x、y以及从所述所述预设视角下所述有色人种肤色特征RGB的XYZ值提取的Y，得到所述预设视角下所述有色人种肤色特征RGB的Yxy值。
具体地，所述第三调整单元26主要用于在计算正视视角下有色人种肤色特征RGB灰阶值所组成的画面的Yxy值与侧视视角下有色人种肤色特征RGB灰阶值所组成的画面的Yxy值的差值，根据所述差值与视角规格值的大小关系后，重新设定每一所述像素中RGB的占比比重。
当所述差值不满足所述视角规格值时，通过所述第三调整单元26重新调整设定每一所述像素中RGB的占比比重，并经由所述设定单元22、所述第一调整单元23、所述第二调整单元24、所述计算单元25处理，使所述差值满足所述视角规格值；当所述差值满足所述视角规格值时，不做任何调整。
本申请以量测到的正常的RGB像素排列方式下不同角度的全灰阶的V-T曲线及XYZ数据为基础，通过设定RGB不同的比重，模拟得到上述比重下不同角度的WRGB全灰阶的V-T和XYZ数据。接着，通过提取需改善视角画面的特征RGB灰阶值，模拟得到不同角度下该特征RGB对应的视角表现。通过调整RGB在像素不同的比重，改善所需改善的画面的视角表现，使其满足规格要求，可有效的改善肤色视角问题。
本申请的有益效果为：本申请所提供的改善有色人种肤色视角表现的设计方法，通过调整像素中红色子像素、绿色子像素以及蓝色子像素之间的占比比重，使得有色人种肤色特征RGB正视视角的Yxy值与侧视视角的Yxy值满足预设规格值，解决了现有技术导致的不同肤色人种视觉显示差异较大的问题。
综上所述，虽然本申请已以优选实施例揭露如上，但上述优选实施例并非用以限制本申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定的范围为准。

Claims (10)

  1. 一种改善有色人种肤色视角表现的设计方法，其中，所述方法包括：
    S10，在每一像素中RGB的占比比重相同的情况下，采集每一预设视角下每一像素中WRGB的V-T曲线及每一灰阶的XYZ值，所述预设视角至少包括正视视角和侧视视角；
    S20，重新设定每一所述像素中RGB的占比比重，计算所述预设视角下每一所述像素中WRGB的V-T曲线及每一灰阶的XYZ值；
    S30，在255灰阶或最高灰阶预设电压设置下，基于正视角度伽玛值为2.2情况下计算每一所述像素中每一灰阶的亮度值；
    S40，对每一所述像素进行白平衡调整，确认白平衡下每一灰阶的灰阶值；
    S50，通过数学软件统计有色人种肤色特征RGB灰阶值，计算所述预设视角下所述特征RGB灰阶值所组成的画面的Yxy值；
    S60，计算正视视角下有色人种肤色特征RGB灰阶值所组成的画面的Yxy值与侧视视角下有色人种肤色特征RGB灰阶值所组成的画面的Yxy值的差值，根据所述差值与视角规格值的大小关系，重新设定每一所述像素中RGB 的占比比重。
  2. 根据权利要求1所述的改善有色人种肤色视角表现的设计方法，其中，所述S20还包括：
    S201，在每一所述像素中，设定R子像素的占比比重为p1，设定G子像素的占比比重为p2，设定B子像素的占比比重为p3，p1、p2与p3的三者之和为1；
    S202，根据p1＝p2＝p3＝1/3时对应的每一预设视角下每一像素中WRGB的V-T曲线及每一灰阶的XYZ值，计算出重新设定每一所述像素中RGB的占比比重后，所述预设视角下每一所述像素中WRGB的V-T曲线及每一灰阶的XYZ值。
  3. 根据权利要求1所述的改善有色人种肤色视角表现的设计方法，其中，所述S30还包括：
    S301，根据所述预设视角下每一所述像素0灰阶的XYZ值获取所述预设视角下每一所述像素0灰阶的亮度值，根据所述预设视角下每一所述像素255灰阶的XYZ值获取所述预设视角下每一所述像素255灰阶的亮度值；
    S302，根据公式
    Figure PCTCN2019116230-appb-100001
    计算所述预设视角下每一所述像素中每一灰阶的亮度值，所述a为所述预设视角下每一所述像素0灰阶的亮度值，所述b为所述预设视角下每一所述像素255灰阶的亮度值，所述n为所述预设视角下每一所述像素对应的灰阶值，所述z为伽玛值2.2， 所述c为所述预设视角下每一所述像素中每一灰阶的亮度值。
  4. 根据权利要求1所述的改善有色人种肤色视角表现的设计方法，其中，所述S50还包括：
    S501，通过matlab软件统计有色人种肤色特征RGB灰阶值，计算所述预设视角下所述有色人种肤色特征RGB的XYZ值；
    S502，根据所述预设视角下所述有色人种肤色特征RGB的XYZ值，计算所述预设视角下所述有色人种肤色特征RGB的Yxy值。
  5. 根据权利要求4所述的改善有色人种肤色视角表现的设计方法，其中，所述S502还包括：
    S5021，根据所述预设视角下所述有色人种肤色特征RGB的XYZ值，计算x以及y；其中，x＝X/(X+Y+Z)，y＝Y/(X+Y+Z)，所述x、y为色坐标值，所述XYZ值包括X、Y和Z；
    S5022，根据计算得到的x、y以及从所述所述预设视角下所述有色人种肤色特征RGB的XYZ值提取的Y，得到所述预设视角下所述有色人种肤色特征RGB的Yxy值。
  6. 根据权利要求1所述的改善有色人种肤色视角表现的设计方法，其中，所述S60中，当所述差值不满足所述视角规格值时，重新调整设定每一所述像素中RGB的 占比比重，并重复S20至S50，使所述差值满足所述视角规格值；当所述差值满足所述视角规格值时，不做任何调整。
  7. 一种改善有色人种肤色视角表现的设计系统，其中，所述系统包括：
    获取单元，用于在每一像素中RGB的占比比重相同的情况下，采集每一预设视角下每一像素中WRGB的V-T曲线及每一灰阶的XYZ值，所述预设视角至少包括正视视角和侧视视角；
    设定单元，用于重新设定每一所述像素中RGB的占比比重，计算所述预设视角下每一所述像素中WRGB的V-T曲线及每一灰阶的XYZ值；
    第一调整单元，用于在255灰阶或最高灰阶预设电压设置并基于正视角度伽玛值为2.2情况下，计算每一所述像素中每一灰阶的亮度值；
    第二调整单元，用于对每一所述像素进行白平衡调整，确认白平衡下每一灰阶的灰阶值；
    计算单元，通过matlab软件统计有色人种肤色特征RGB灰阶值，计算所述预设视角下所述特征RGB灰阶值所组成的画面的Yxy值；
    第三调整单元，计算正视视角下有色人种肤色特征RGB灰阶值所组成的画面的Yxy值与侧视视角下有色人 种肤色特征RGB灰阶值所组成的画面的Yxy值的差值，根据所述差值与视角规格值的大小关系，重新设定每一所述像素中RGB的占比比重。
  8. 根据权利要求7所述的改善有色人种肤色视角表现的设计系统，其中，所述设定单元用于：
    在每一所述像素中，设定R子像素的占比比重为p1，设定G子像素的占比比重为p2，设定B子像素的占比比重为p3，p1、p2与p3的三者之和为1；根据p1＝p2＝p3＝1/3时对应的每一预设视角下每一像素中WRGB的V-T曲线及每一灰阶的XYZ值，计算出重新设定每一所述像素中RGB的占比比重后，所述预设视角下每一所述像素中WRGB的V-T曲线及每一灰阶的XYZ值。
  9. 根据权利要求7所述的改善有色人种肤色视角表现的设计系统，其中，所述第一调整单元用于：
    根据所述预设视角下每一所述像素0灰阶的XYZ值获取所述预设视角下每一所述像素0灰阶的亮度值，根据所述预设视角下每一所述像素255灰阶的XYZ值获取所述预设视角下每一所述像素255灰阶的亮度值；根据公式
    Figure PCTCN2019116230-appb-100002
    计算所述预设视角下每一所述像素中每一灰阶的亮度值，所述a为所述预设视角下每一所述像素0灰阶的亮度值，所述b为所述预设视角下每一所述像素255灰阶的亮度值，所述n为所述预设视角下每一所述像素对 应的灰阶值，所述z为伽玛值2.2，所述c为所述预设视角下每一所述像素中每一灰阶的亮度值。
  10. 根据权利要求7所述的改善有色人种肤色视角表现的设计系统，其中，所述计算单元用于：
    根据所述预设视角下所述有色人种肤色特征RGB的XYZ值，计算x以及y；其中，x＝X/(X+Y+Z)，y＝Y/(X+Y+Z)，所述x、y为色坐标值，所述XYZ值包括X、Y和Z；根据计算得到的x、y以及从所述所述预设视角下所述有色人种肤色特征RGB的XYZ值提取的Y，得到所述预设视角下所述有色人种肤色特征RGB的Yxy值。
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