CMYK到L^＊a^＊b^＊色彩空间转换的研究  

Study on color space conversion from CMYK to L~*a~*b~*

作　　者：曹从军[1] 周明全[1] 康一[2] 

机构地区：[1]西北大学信息科学与技术学院 [2]青岛科技大学高分子科学与工程学院,山东青岛266042

出　　处：《计算机应用》2008年第1期165-167,共3页journal of Computer Applications

基　　金：陕西省自然科学基金资助项目(2004E229);国家自然科学基金资助项目(60673100)

摘　　要：为了满足色彩复制一致性和预期性要求,寻找一种精确实用的L*a*b*与CMYK转换方法尤为重要。本文利用数理统计的二元线性回归方法在建立CMY到L*a*b*的转换模型的基础上,验证了网点呈色平面规律同样适用四色印刷,并通过最小二乘及数值分析的方法拟和各四色平面方程系数建立了CMYK到L*a*b*转换模型。随后对模型进行精度验证并修正,分析误差产生的原因,最终得到比较精确的模型。Color space conversion is the key technology in color management, direct quality-detection of printing images and color separation. Therefore, it is very important to find out a accurate and practical transform from CMYK to L^＊a^＊b^＊. In this paper the dot colorimetric plane of four-color halftone printing based on optic phenomena was verified by the standard printing. Then the equation of transition from CMYK to L^＊a^＊b^＊ was modeled by analyzing the colorimetric values of process printing patches based on mathematic statistical method and numerical analysis method. And its precision was discussed and the main reasons that influence the equation precision were analyzed.

关 键 词：CMYK—L^＊a^＊b^＊的转换 色度平面 颜色空间 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构] TP391[自动化与计算机技术—计算机科学与技术]