xy色品图中的色差计算

Computation of Chromatic Difference in xy Chromaticity Diagram

本文从色差计算的目的出发,通过真实色彩空间XYZ空间与RGB空间的关系,推导出xy色品图与rg色品图之间的关系,并由此引出“计算亮度”这一新概念,使我们可根据xy色品图中的某一种颜色(x,y)直接推算出真实色彩RGB及色差关系。

For the purpose of chromatic difference computation; the relationship between xy and rg chromaticity diagrams from XYZ and RGB real colour space is deduced in this paper. Furthermore, based on this relationship,a new concept of 'computing lightness' is introduced, by which we can compute real colours and their chromatic differences directly, and in this case what we need to do is to select colours vre want to get in xy chromaticity diagram.