%0 Journal Article
%T A Virtual Color Space Based on Physical Model<br>基于物理模型的虚拟颜色空间
%A TAO Lin-mi
%A XU Guang-you
%A <br>陶霖密
%A 徐光You
%J 中国图象图形学报
%D 2001
%I 
%X The measurement of color difference in machine vision is the basement of image segmentation based on the color features, but there is no colorimetrical system for machine vision. Traditional colorimetry has two major systems: (1) to build a color specification system experimentally and to use it as a reference (for example, the Munsell Book of Color). (2) to develop an analytical formulation based on discrimination experiments (such as, CIELAB, CIELUV). The color space based on the psychophysical experiments of human visual system is non-flat. That means the perceptual difference of colors can not be described by the Euclidian distances between the related two points in the color space and the map from perceptual difference to the Euclidian distances is not linear. In this paper, we built a virtual color space based on the physical models of light, reflectance of surfaces and the sampling function of visual system. In this virtual color space the chromatism of machine vision can be calculated linearly. We also suggest that the chromatism measurement of machine vision is different from the spectral reflectance of physical surfaces used in present computer models of color vision.
%K Color perception
%K Color space
%K Colorimetry
%K Computer vision<br>颜色知觉
%K 色差计算
%K 计算机视觉
%K 虚拟颜色空间
%K 物理模型
%K 色度学
%K 机器视觉系统
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=027813E5F7F3922E&yid=14E7EF987E4155E6&vid=B31275AF3241DB2D&iid=E158A972A605785F&sid=7D6CD8918B045FD4&eid=238BD7580EFCC5AE&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=0&reference_num=15