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    • 6. 发明授权
    • Method for describing an actual color gamut of a color device or of a color content
    • 描述彩色装置或彩色内容的实际色域的方法
    • US08724892B2
    • 2014-05-13
    • US12452744
    • 2008-07-25
    • Jürgen StauderLaurent BlondePatrick Morvan
    • Jürgen StauderLaurent BlondePatrick Morvan
    • G06K9/00
    • H04N1/6058
    • To describe the actual color gamut, a hierarchical structure is proposed which comprises, from bottom to top: Gamut Components: each GC is a surface, generally described as a set of connected elementary triangles or polygons. Gamut Hulls: each GH is a closed surface formed by the concatenation of connex Gamut Components. Gamut Instances: each GI is an alternative Gamut Boundary Description of the same actual gamut and is built by the union of the volume(s) bordered by at least one Gamut Hull. 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.
    • 为了描述实际的色域,提出了从底部到顶部的分层结构:色域分量:每个GC是一个表面,通常被描述为一组连接的基本三角形或多边形。 Gamut Hulls:每个GH是通过连接器连接器组件形成的封闭表面。 色域实例:每个GI是相同实际色域的替代色域边界描述,由至少一个Gamut Hull所界定的卷的联合构建。 这样的色域边界信息可能特别用于色域映射操作。 本发明的优点是灵活性和适应于可用存储器和带宽能力。
    • 10. 发明授权
    • Method of color mapping from non-convex source gamut into non-convex target gamut
    • 从非凸起源色域到非凸目标色域的颜色映射方法
    • US08629881B2
    • 2014-01-14
    • US12452741
    • 2008-07-25
    • Laurent BlondeJürgen StauderWolfgang Endress
    • Laurent BlondeJürgen StauderWolfgang Endress
    • G09G5/02
    • H04N1/6058
    • Method of mapping source colors from a source color device having an actual source gamut that is represented by a source convex (gamut boundary descriptor) and a source non-convex into target colors for a target color device having an actual target gamut that is represented by a target convex and a target non-convex, comprising, 1—if the source color to map is located outside the source non-convex, a pre-mapping step that maps the source color into the source non-convex, 2—if the mapped target color is located outside the target non-convex, a post-mapping step that maps the target color into the target non-convex. This method allows precise gamut mapping while allowing also for simple geometrical operations using convex gamuts.
    • 将具有由源凸(色域边界描述符)表示的实际源色域的源颜色和源非凸的源颜色的源颜色映射到具有实际目标色域的目标色彩设备的方法,所述目标色彩设备具有由 目标凸和目标非凸,包括1 - 如果要映射的源颜色位于源非凸的外部,则将源颜色映射到源非凸的预映射步骤,2 - 如果 映射的目标颜色位于目标非凸的外部,后映射步骤将目标颜色映射到目标非凸。 该方法允许精确的色域映射,同时允许使用凸域的简单几何操作。