基于彩色复制品的色差主、客观评价分析

Analysis of Subjective and Objective Evaluation of Color Difference for Color Reproduction

彩色复制品中,颜色复制的准确与否是一个很重要的衡量与评价因素。设计灰梯尺作为视觉评价的标准进行主观评价,选用9个彩色复制中常见的色块,分别改变明度、饱和度与原图比较,进行主观评价。分析主观评价数据与测量数据(ΔEa*b*、ΔE2000),不同的颜色对明度、饱和度的响应不同,不同的色差公式测量的结果也有很大的区别。

The veracity of color reproduced in color reproduction is an important weight and evaluation factor. Designing the gray scale, as the standard for subjective evaluation, selecting nine typical color patches in color reproduction, changing lightness and chroma independently and then comparing it with the original for subjective evaluation. In the analysis of the data from subjective evaluation and measurement（ △Ea＊ b＊ , △E2000）, different colors have different responses to lightness and chroma, with different color difference formulae having different results.