WCS颜色管理系统是利用基于测量的设备特性文件，结合相应的设备模型，得到设备颜色空间和标准颜色空间之间的映射，其在ICC颜色管理系统的基础上进行了全新的改进。微软公司和佳能公司所共同推出的计算机操作系统Microsoft Windows VistaTM中采用的WCS（Windows Color System）颜色管理系统，在ICC（International Color Consortium）颜色管理系统的基础上进行了改进。WCS颜色管理系统为先进的色彩应用软件和设备提供了一个新的发展平台，为颜色中不断进行的改革和创新提供了一个强有力的基础。本文主要从颜色空间的模型发展，分析ICC色彩管理标准下的局限性，最终就WCS颜色管理系统的特点及优点，WCS颜色管理系统的工作原理及工作流程，WCS颜色管理系统的研究及应用进行了探讨。最后阐明WCS颜色管理系统，其对今后色彩管理的发展起到重要的推动作用。
A Chinese skin colour database is established based on measurements taken from nine bodies areas of 202 Chinese individuals to move towards accurate skin colour reproduction. The colour appearance of each skin point is predicted, and a comprehensive colour gamut for Chinese skin is determined. A consistent colour shift between facial and arm colours is identified, in which facial colour tends to be more reddish, more colourful, and darker than arm colour. Moreover, Chinese females are found to have lighter, paler, and more yellowish skin than Chinese males. Variations in Chinese skin colour are quantified, and body area differences and gender differences are shown to have significant effects on Chinese skin colour.
Kaida Xiao廖宁放Faraedon Zardawi刘浩学Richard Van Noort杨智雄黄敏Julian M Yates
A system with uniform light reflection in the inner surface within a horizontal 2/3 cylindrical structure for line-scan CCD of the print testing was designed.The design was based on diffuse reflection uniformity of the integrating sphere and requirement of the strip uniform illumination region.This system was called dome light.White light LED array light sources were used for uniform illumination.The LEDs were filtrated to composite array light source based on coefficient of variation of a single LED.The standard white board and SG color checkers were used in the line-scan CCD imaging experiments under the dome light and ordinary illumination light source.The average color difference(ΔE)of SG color checkers in CIELAB space was 2.091 under the dome light and 2.286 under ordinary illumination light source respectively.Experimental results indicate that the dome light can satisfy illumination uniformity and color rendering consistency for line-scan CCD and provide a standard light source for uniform calibration of different cameras.
