基于Yule-Nielsen的半色调印刷品的光谱预测模型  

Spectral Prediction Model for Half Tone Prints Based on Yule-Nielsen Equation

作　　者：张彦 唐正宁 

机构地区：[1]江南大学,无锡214122

出　　处：《包装工程》2008年第3期81-83,共3页Packaging Engineering

摘　　要：介绍了Yule-Nielsen修正光谱Neugebauer方程的色彩预测模型,通过分析有效网点面积率、油墨铺展在不同叠印条件下,光谱反射率的预测模型,说明了物理网点扩大对方程的影响,然后又通过分析纸张的点传递函数PSF和概率模型,指出了光学网点扩大对方程的影响,更优化了模型,最后对Yule-Nielsen方程参数n值,具体做了解释并用迭代法求得最佳的n值。The Yule-Nielsen modified spectrum Neugebauer equation of color prediction was intro-duced. Through analyzing effective dot area coverage and spectral prediction model with ink spreading in all superposition conditions, the influence of physical dot gain on Yule-Nielsen equation was studied. Through analyzing paper spread function （ PSF ） and probability model, the influences of optical dot gain on equation were put forward. At last, Yule-Nielsen n-value was studied and the best solution was given using iteration method.

关 键 词：Yule-Nielsen方程 油墨铺展 光学网点扩大 n值 

分 类 号：TS805[轻工技术与工程]