多色打印中基于光谱的油墨选择——最佳油墨选择

描述了从给定油墨库中选择出一组八色油墨,建立最小化同色异谱的八色光谱打印模型的油墨选择算法.对于一个含有n种油墨的油墨库,这里有Cn8种油墨组合,当n很大时,油墨组合的数量就成了几何数字.有些明显不可能的油墨组合,通过解析法可以去除.首先,使用向量相关性分析法来去除没有可行性的组合.然后,用连续调相似评估每一备选油墨组的色度和光谱精确度.选择备选油墨组中对应有光谱精确度最高的一组油墨,定为八色打印过程的最佳油墨组以获取最小同色异谱的色彩复制.

Spectral-based Ink Selection for Multiple-ink Printing: Optimal Ink Selection

The ink selection algorithm was introduced to select a set of eight inks from a given ink database for a spectral-based eight-color printing system which minimizes metamerism.Since there are C(n,8) ink combinations for an ink database containing n inks,the number of ink combinations is a geometric figure when n is large.Some obviously impossible ink combinations can be removed through analysis.First,vector correlation analysis was employed to remove the impossible combinations.Then the ink-selection algorithm estimates the colorimetric and spectral accuracy of candidate ink sets in an empirically derived color mixing space which approximates the color formation of a halftone printing process.The candidate ink set with the highest spectral accuracy will be designated as the optimal ink set for an eight colors printing process thereby achieving the least metameric color reproduction.