发明公开
EP2091226A1 Algebraic method for defining a color gamut mapping function
审中-公开
Algebraisches Verfahren zur Bestimmung einer Farbtonbereichsumsetzungsfunktion
- 专利标题： Algebraic method for defining a color gamut mapping function
- 专利标题（中）： Algebraisches Verfahren zur Bestimmung einer Farbtonbereichsumsetzungsfunktion
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申请号： EP08300092.7申请日： 2008-02-13
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公开(公告)号： EP2091226A1公开(公告)日： 2009-08-19
- 发明人: Bourdon, Pascal , Stauder, Jurgen , Thiebaud, sylvain
- 申请人： Thomson Licensing
- 申请人地址： 46, Quai A. Le Gallo 92100 Boulogne-Billancourt FR
- 专利权人： Thomson Licensing
- 当前专利权人： Thomson Licensing
- 当前专利权人地址： 46, Quai A. Le Gallo 92100 Boulogne-Billancourt FR
- 代理机构： Ruellan-Lemonnier, Brigitte
- 主分类号： H04N1/60
- IPC分类号： H04N1/60
摘要：
This method comprises
- the definition of a global perception error function, such that, for each source color of a set to map, a value is given for this global error function;
- the definition of an energy function U(F) as a sum of the values of said global perception error function for all source colors of said set that is weighted for each source color of said set by its probability within said set,
- definition of said gamut mapping method by an algebraic function that minimizes this energy function.
Such a definition may be easily connected to actual Human Visual System-based criteria.
- the definition of a global perception error function, such that, for each source color of a set to map, a value is given for this global error function;
- the definition of an energy function U(F) as a sum of the values of said global perception error function for all source colors of said set that is weighted for each source color of said set by its probability within said set,
- definition of said gamut mapping method by an algebraic function that minimizes this energy function.
Such a definition may be easily connected to actual Human Visual System-based criteria.
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