Constructing a uniform color space for visually lossless color representation and image coding

摘要

A uniform color space in terms of just-noticeable differences (JND) to the human eye is important in industry and image processing, as well as for visually lossless image coding and noise evaluations. The method of this paper builds a non-linear color space, by making use of structural analysis with various JND data sets. Through computer simulation, the color space obtained by this method is shown to be superior to conventional ones such as CIELUV in terms of uniformity, and attained a 3-bit reduction in representing chromaticity of RGB color data.