摘要 |
To describe the actual color gamut, a hierarchical structure is proposed which comprises, from bottom to top: Gamut Components (GC): each GC is a surface, generally described as a set of connected elementary triangles or polygons. Gamut Hulls (GH): each GH is a closed surface formed by the concatenation of connex Gamut Components (GC). Gamut Instances (Gl) : each Gl is an alternative Gamut Boundary Description (GBD) of the same actual gamut and is built by the union of the volume(s) bordered by at least one Gamut Hull (GH). Such a Gamut Boundary Information may be notably used for gamut mapping operations. Among advantages of the invention, are flexibility and adaptation to available memory and bandwidth capabilities.
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