孟赛尔色立体的全色域网格化混色模型构建及其可视化

Construction and visualization of pangamut grid color mixing model for Munsell color solid

为了解决孟赛尔色立体难于构建的难题,在分析孟赛尔色立体的色彩分布及色相体系、明度体系、彩度体系的基础上,研究并给出了基于七基色(赤道色相环上的5个主色和灰度轴上的南极色与北极色)的数字化混配,获取孟赛尔赤道色相环、灰度轴、边缘色、中间色以及构建孟赛尔色相体系、明度体系、彩度体系的方法;研究并给出了基于孟赛尔色相等级、明度等级、彩度等级的定义构建孟赛尔色立体网格化模型的方法,进一步得到了各网格点对应的位置坐标、颜色值以及七基色混合浓度值的数学表达式;以20色相孟赛尔色立体为例,由赤道色相环上5个彩色主色和灰度轴上南极色、北极色组成的七基色出发,基于构建的孟赛尔色立体网格化模型及网格点颜色值计算方法,获取了20个等色相面色,11个等明度面上678个网格点的颜色值;最后编制的算法程序,给出了20个等色相面色,11个等明度面色谱,实现了孟赛尔色立体色谱的可视化,验证了基于七基色的数字化混色构建孟赛尔色立体的可行性。

In order to solve the problem that it is difficult to construct Munsell color stereo,analyzes the color distribution and hue system,brightness system and chroma system of Munsell color stereo,and studies and gives the digital mixing based on seven primary colors(the five main colors on the equatorial hue ring and the south and north colors on the gray axis).The method of obtaining Munsell equatorial hue ring,gray axis,edge color,intermediate color and constructing Munsell hue system,brightness system and chroma system;The method of constructing Munsell color three-dimensional grid model based on the definition of Munsell color grade,brightness grade and chroma grade is studied and given.The mathematical expressions of position coordinates,color values and mixing concentration values of seven primary colors corresponding to each grid point are obtained.Taking 20-hue Munsell color stereo as an example,the color values of 678 mesh points on 20 equichromatic faces and 11 equibright surfaces are obtained based on the Munsell color stereo grid model and the calculation method of seven primary colors composed of 5 main colors on the equatorial color ring and the north and south colors on the gray axis.In the end,the algorithm program is developed,20 equichromatic complexion and 11 equibright surface color are given,the visualization of Munsell color stereoscopic chromatography is realized,and the feasibility of constructing Munsell color stereo based on the digital color mixing of seven primary colors is verified.