高清晰度电视系统三维色域研究  

Research on Three-dimensional Gamut Model of High Definition Television

作　　者：李彦[1] 徐岩[1] 李桂苓[1] 

机构地区：[1]天津大学电子信息工程学院,天津300072

出　　处：《南开大学学报（自然科学版）》2011年第1期30-35,共6页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：国家自然科学基金(60802050)

摘　　要：根据相加混色原理,建立了常规色域的三维数学模型,在CIE1976LUV三维色度系统与Pointer物体真实表面色色域作了色度学比较.结果表明,常规HDTV传输系统之所以不能传输或重显全部Pointer色域,并不单纯因为色域范围小,两个色域涵盖的颜色范围有差别也是重要原因.这对需要从三维和颜色覆盖范围方面研究色域问题具有借鉴意义.基于建立的HDTV常规色域三维模型实现了宽传输色域向窄重显色域的等色调映射,色差计算结果表明GCUSP映射算法可作为宽色域压缩映射的首选算法.To study color gamut of HDTV system in 3D color space,according to additive color mixture theory,3D mathematical model for coventional color gamut is established,which is compared with the gamut of Pointer real surface colors in CIE 1976LUV system.The results show that the reason why conventional gamut transportation system can＇t transport or reporo-duce all Pointer color gamut is not only because of the small scope of conventional color gamut but also because of the different coverage area between these two gamuts.The method proposed in the paper is useful for reference considering the need to thoroughly study the color coverage problem in 3D and coverage area.Also gamut mapping from Pointer color gamut to conventional gamut based on 3D mathamatical model of HDTV conventional color gamut is realized. The calculation results of color difference show that GCUSP can be the preferred one to compress and map wide color gamut.

关 键 词：色域 宽色域HDTV系统 色空间 色域映射 

分 类 号：TN949.197[电子电信—信号与信息处理]