摘要
高保真印刷技术通过在CMYK的基础上增加其他原色的方法,达到扩大色域的目的,增加的原色与CMYK之间存在替代关系,替代关系可以简化复杂的高保真多色分色模型,并提高其精度。以CMYKRBG七色高保真模型中R为例,设计了渐变测控条,打印输出并测量了各级网点密度,采用多项式回归算法,拟合出了间色平衡曲线,建立了R与MY的替代方程,通过设置间色替代率,获取了R与MY之间的颜色替代量,最后设置了4组不同的间色替代率,通过色差确定了合适的间色替代率的取值范围。实验结果表明:确定的间色替代率在0.2左右,可以提高分色模型的精度。
By adding some original colors to CMYK,Hi-Fi printing technology can expand the gamut.The original colors added have substitution relation with CMYK.The substitution relation can simplify the complex Hi-Fi color separation model and improve precision.The R in CMYKRGB 7 colors Hi-Fi model was taken as an example,and gradient-type control trip was designed and printed.The density was measured.The mid-color balance curve was fitted by polynomial regression algorithm to build the alternative equation.The substitution between R and MY was obtained by setting the mid-color replacement rate.4 groups of different mid-color replacement rate were set and ΔE was measured to determine the proper range of the mid-color replacement rate.The results showed that the accuracy of the separation model is improved by setting the mid-color replacement rate as 0.2.
出处
《包装工程》
CAS
CSCD
北大核心
2011年第15期18-21,共4页
Packaging Engineering
关键词
高保真印刷
间色
颜色替代
Hi-Fi print
mid-color
color replacement
作者简介
作者简介：刘真（1953-），女，江西人，上海理工大学教授、博士生导师，主要研究领域为色彩再现理论与应用（色貌模型与色彩管理）。
