文章摘要
刘太庆,王晓红,蒋继春,丁桂芝.基于视觉灰平衡的灰成分替代[J].包装工程,2013,34(19):105-107.
LIU Tai-qing,WANG Xiao-hong,JIANG Ji-chun,DING Gui-zhi.Gray Component Replacement Based Visual Gray Balance[J].Packaging Engineering,2013,34(19):105-107.
基于视觉灰平衡的灰成分替代
Gray Component Replacement Based Visual Gray Balance
投稿时间:2013-04-30  修订日期:2013-10-10
DOI:
中文关键词: 视觉灰平衡  灰成分替代  中性灰密度
英文关键词: visual gray balance  gray component replacement  neutral gray density
基金项目:
作者单位
刘太庆 上海理工大学, 上海200093 
王晓红 上海理工大学, 上海200093 
蒋继春 上海理工大学, 上海200093 
丁桂芝 上海理工大学, 上海200093 
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中文摘要:
      提出了视觉灰平衡的概念和模型,并应用于分色过程中的灰成分替代。首先,以视觉中性灰色的色度值为标准,使用查找表的方法获取了视觉灰平衡数据,然后基于中性灰密度,建立了K 与CMY 替代方程,最后设置4 种不同的替代率,对CMY 色块进行灰成分替代。实验结果表明,当替代率设置为0. 4 时,计算出与未取代的灰色之间的色差最小,并且扩大了中亮调的色域范围。
英文摘要:
      The concepts and models of visual gray balance were proposed and applied in gray component replacement of color separation process. Visual gray balance data was acquired by look-up-table based on chromaticity of visual gray. The equation between K and CMY was established based on neutral gray density. 4 kinds of replacement ratio were assigned replace the gray component of CMY color patches. The experiment results showed that when the replacement ratio is 0. 4, the color difference between the calculated and the original gray color patch is smallest; the color gamut is expanded in light and middle tone.
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