System and method for color space conversion using an extended color space
AssigneeSilicon Graphics, Inc.
InventorScott K. Pritchett
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Abstract
A system and method for converting a color uses an extended color space to convert a color from a first color space to a second color space. The extended color space is extended from the second color space. In other words, the extended color space has increased valid component ranges compared with the second color space to accommodate the conversion of any valid colors from the first color space. Subsequent operations on the converted color in the extended color space occur without the presence of conversion artifacts found in many conventional color space converters.
Claims20
A method of processing color, comprising the steps of:
- (a) converting a representation of a color in a first color space to a representation in an extended second color space, wherein said extended second color space has the same components as a second color space but has component ranges exceeding the component ranges of said second color space, such that all valid colors of said first color space can be converted to said extended second color space and represented as valid colors therein without requiring additional modification;
- and
- (b) performing an imaging operation on said representation in said extended second color space, wherein a color resulting from said imaging operation is represented without conversion artifacts in said extended second color space, and wherein said imaging operation modifies said representation in said extended second color space for purposes of modifying a computer image.
A system for color processing, comprising:
- a color space converter for converting a representation of a color in a first color space to a representation in an extended second color space, wherein said extended second color space has the same components as a second color space but has component ranges exceeding the component ranges of said second color space, such that all valid colors of said first color space can be converted to said extended second color space and represented as valid colors therein without requiring additional modification.
Dependencies are inferred from the claim text.