Representing a color gamut with a hierarchical distance field
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United States of America Patent
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Nov 19, 2002
Grant Date -
N/A
app pub date -
Aug 6, 1999
filing date -
Aug 6, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention provides a method for representing a device color gamut as a detail directed hierarchical distance field. A distance field representing the device color gamut is enclosed with a bounding box. The enclosed distance field is partitioned into a plurality of cells. Each cell has a size corresponding to detail of the continuous distance field and a location with respect to the bounding box. A set of values of the enclosed distance field is sampled for each cell. A method for reconstructing the portion of the distance field enclosed by the cell is specified. The size, the location, the set of values, and the method for reconstructing is stored in a memory to enable reconstruction of the device color gamut by applying the reconstruction methods of the cells to the values.
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