发明名称 Mapping an out of gamut RGB color to a gamut surface
摘要 What is disclosed is a system and method for mapping an out of gamut RGB color to a surface of a color gamut in RGB space. A point xc having {Rc Gc Bc} values in RGB space is identified which is outside a surface of a color gamut of a target device. A lightness value γ and a chroma vector {right arrow over (C)}=[Cr, Cg, Cb] are determined from the {Rc Gc Bc} values of the identified point. A minimum and a maximum saturation are determined for point xc. A new lightness value γ′ and a new chroma vector {right arrow over (C)} are calculated based on the minimum and maximum saturation values, in a manner as is described herein in detail. The new lightness γ′ and the new chroma vector {right arrow over (C)} are converted back into {R′c G′c B′c} values. The {R′c G′c B′c} values are provided to a gamut mapping function.
申请公布号 US8355572(B2) 申请公布日期 2013.01.15
申请号 US20090402805 申请日期 2009.03.12
申请人 XEROX CORPORATION;STEVENS MICHAEL T. 发明人 STEVENS MICHAEL T.
分类号 G06K9/00;G09G5/02 主分类号 G06K9/00
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