Method and device for matching colors between color pictures of different dynamic range
AssigneeInterDigital VC Holdings, Inc.
InventorsSebastien LASSERRE, Fabrice LELEANNEC, David TOUZE
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Abstract
A method is disclosed that comprises mapping a high-dynamic range luminance picture to a standard-dynamic range luminance picture based on a backlight value Bac associated with the high-dynamic range luminance picture.
Claims17
1-16. (canceled)
A method of mapping colors from an input color gamut into an output color gamut, comprising a chroma scaling in which chroma components of colors are scaled by a chroma scaling factor β″, and a chroma mapping of said scaled chroma components, wherein said chroma scaling factor β″ is determined such as to minimize a sum of chrominance distances between colors of an input set distributed in said input color gamut and colors of an output set obtained by chroma mapping said colors of the input set using said chroma mapping.
A device for mapping colors from an input color gamut into an output color gamut, comprising at least one processor configured to:
- chroma scale chroma components of colors by a chroma scaling factor β″, and chroma map said scaled chroma components,
- wherein said chroma scaling factor β″ is determined such as to minimize a sum of chrominance distances between colors of an input set distributed in said input color gamut and colors of an output set obtained by chroma mapping said colors of the input set using said chroma mapping.
Dependencies are inferred from the claim text.