双面半色调图像的Clapper-Yule色彩预测分程模型

通过印刷品光谱反射比预测半色调图像色彩是印刷质量控制与设备检测研制领域十分关注的课题。在假定油墨是非散射介质以及油墨的折射率与纸张的折射率近似相等的条件下,利用光在油墨与纸张中散射迁移路径长短不同的分程理论和多重内反射的网状结构分析方法,研究了光照射在双面印刷品上的光谱反射规律,建立了双面印刷品的光谱反射色彩预测模型。并在此基础上通过理论分析,论证了新建双面印刷品的Clapper-Yule色彩分程预测模型的合理性。新模型为双面印刷品的呈色规律分析与印刷品在线检测仪的研制提供了理论依据。

Clapper-Yule Color Prediction Model for Recto-Verso Halftone Images

The color prediction of the halftone print with a spectral reflectance model is a subject that draws closes attention in the field of quality control and equipment check.On the approximation that the ink is non-scattering and its refractive index is nearly equal to papers,we propose a spectral reflectance color prediction model for recto-verso halftone images by making use of the theory of the light propagation in paper with long-and short-distance model and net structure of multiple reflection in the recto-verso halftone images.Then the new model is demonstrated to be correct through the theoretical analyse is.The new model provides the prediction of the color of recto-verso halftone images and a theoretical method for the development of the non-line checking instrument.