摘要
颜色空间转换是色彩管理流程中的一个重要步骤,目前颜色空间转换算法有多种选择,多项式回归算法是常用的一种方法。为评价该算法的转换精度,本文基于印刷数据集展开对多项式回归算法的研究,以CIE推荐的17个颜色中心为数据集,分别利用4项多项式、6项多项式和8项多项式回归建模,实现了从设备相关颜色空间CMY到设备无关颜色空间CIELAB的转换;通过比较误差法和PF/3评价方法对多项式回归模型精度进行分析。实验结果表明,采用多项式回归算法进行颜色空间转换时,多项式的项数增加可以提高颜色空间转换的精度,但是过多的项数会引起振荡,从而导致整个颜色空间转换精度的下降。
Color space conversion is an important key step in color management process. There are several choices of color space conversion algorithms, such as the polynomial regression method. Based on the print data set, the performance of the polynomial regression method was evaluated in printing field. Based on the 17 center colors recommended by CIE, the models of four polynomials, six polynomials and eight polynomials respectively have been established. Afterwards, the printing samples were made by using this set, and their color information including CMY and L* a * b* values using experimental in struments was got. The accuracy analysis was made by comparing the results of chromatic aberration method with PF/3 evaluation method. The experimental results showed that the increased terms of polynomial could improve the color space conversion accuracy which would be decreased by overhigh terms.
出处
《中国印刷与包装研究》
CAS
2012年第3期18-22,共5页
China Printing Materials Market