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- W133638540 abstract "This chapter discusses a method for mapping RGB triples onto 16 distinct values. A high-speed mapping has been described from arbitrary RGB color descriptors onto one of 14 values. This present method extends the technique in compatible fashion to 16 values by placing two mid-level gray values. The derivation takes advantage of descriptive solid geometry in locating the nearest (Euclidean) target point to input point. The chapter illustrates the partitioning of 3-space into 16 regions, and quantization of color triples under the algorithm. High-speed mapping onto a small set of three-component descriptors may be achieved by the partitioning of the unit cube into subregions. This has a general application in recoding 3-vectors (color triples, surface normals) at reduced precision in symmetric fashion. Specifically, planes normal to the cube's four body diagonals form 14 space partitions. As these planes are parallel neither to the axes nor to each other, axis-separable algebraic methods, which are conventionally used for quantization of larger color spaces, must yield to non-Cartesian models, the latter easily represented geometrically." @default.
- W133638540 created "2016-06-24" @default.
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- W133638540 date "1991-01-01" @default.
- W133638540 modified "2023-10-06" @default.
- W133638540 title "MAPPING RGB TRIPLES ONTO 16 DISTINCT VALUES" @default.
- W133638540 doi "https://doi.org/10.1016/b978-0-08-050754-5.50038-4" @default.
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