Abstract: In Windows Vista operating system,a new WCS Color Management System(CMS) is released to replace the original ICC CMS.One of the core technologies of the new CMS is that the CIECAM02 color appearance model is used to substitute the CIELAB color model of the ICC CMS,so the parameters such as surrounding,illuminant and other factors are included in the calculation of the color transformation and reproduction,By this way the correct transformation and reproduction of the color measured values is converted to the correct transformation and reproduction of the color vision effects in the color communication between the different media and equipments.But it is proved that the CIECAM02 is not an ideal visual uniformity color space which affects the correct calculation of the color conversion between the media or equipments.Firstly,the partial visual uniformity of the CIECAM02 is revised using the four international universal Color Difference Datasets(BFD,Leeds,RIT-DuPont and Witt),and the lightness which is revised by Witt data and chroma which is revised by Leeds data are selected.Secondly,the integrity visual uniformity of the CIECAM02 is revised using the Munsell Renotation Data.Finally,the uniformity of the CIECAM02 and the revised CIECAM02 are investigated using the Munsell Renotation Data,and the results show that,the revised CIECAM02 is greatly improved in terms of partial and entire space.The experiment results not only can be directly applied in the CMS of computer operating system and software,but also can be referenced for the future research of the uniform color spaces.

Key words: uniform color space, CIECAM02, color difference data, Munsell Renotation Data