& Shirley, P., Simple Analytic Approximations to the CIE XYZ Color Matching Functions, Journal of Computer Graphics Techniques, 2(2), pp. 1-11, 2013.Wyman, C.; Sloan, P.-P.; Shirley, P. Simple Analytic Approximations to the CIE XYZ Color Matching Functions. J. Comput. Graphics Technol...
图片来自https://zhajiman.github.io/post/color_matching_function/ 他们把可见光谱上(波长为380nm到780nm之间)所有的单色光都作为测试光,并记录下了与之对应的RGB的强度的比例,将结果绘制成如下图的曲线,这三条曲线也称为颜色匹配函数(Color Matching Functions) 图片来自https://en.wikipedia.org/wiki/CIE_193...
1931年国际照明委员会综合了不同实验者的实验结果,得到了RGB颜色匹配函数(colormatching functions),如图2。横坐标表示光谱波长,纵坐标表示用以匹配光谱各色所需要三基色刺激值,这些值是以等能量白光为标准的系数,是观察者实验结果的平均值。为了匹配在438.1 nm和546.1 nm之间的光谱色,出现了负值,这就意味匹配这段里...
用于颜色计算的颜色匹配函数（color matching functions）及线性的CIE XYZ色彩空间 计算颜色的标准方法（AST...
Figure 2: The CIE XYZ color matching functions for a 2-degree field. Data source: Colour & Vision Research Laboratory of the University College London, page on CIE XYZ functions. CIE has also introduced normalized coordinates x, y and z, obtained by dividing the X, Y and Z values by (...
首先要在频率功率分布(SPD)曲线的基础上,分别使用X/Y/Z三个频率匹配曲线(spectral matching curves,又名CIE XYZ Color Matching Functions)计算卷积,分别求得三个系数,这个三个系数即为该SPD所对应的XYZ值。然后再根据求得的XYZ值,进行线性矩阵计算,求得对应的linear RGB值。最后针对linear RGB进行Gamma Correction...
返回并可选地绘制 1931 CIE 颜色匹配函数的函数。 参考: https : //en.wikipedia.org/wiki/CIE_1931_color_space#Color_matching_functions 您可以使用这些曲线从单个光谱图像的集合中构建 X、Y 和 Z 图像。 有了这些 X、Y 和 Z 图像,您就可以使用图像处理工具箱的 xyz2rgb() 函数获取 RGB 图像。 此...
The corresponding color-matching functions (CIE 1931 2deg) at 694 nm are 0.016987, 0.006138, and 0.000000, respectively. Calculated tristimulus values XYZ are then: 276.7, 100.0, 0.0. The way we arrived to these numbers is following: each value of the color-matching functions at 694 nm was ...
import * as colors from "@texel/color"; const rgb = colors.convert([0.5, 0.15, 30], colors.OKLCH, colors.sRGB); 💡 Modern bundlers (esbuild, vite) will apply tree-shaking and remove any features that aren't needed, such as color spaces and gamut mapping functions that you didn't...
– XYZ tristimulus channels with close matching to CIE 1931 spectra with excellent IR rejection – Clear wide bandwidth channel • High resolution color measurement in CIE XY, LUV space, correlated color temperature (CCT) along with ambient lux measurement • Semi-logarithmic output with 7 binary...