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Apparatus and method for color transformation

  • US 5,412,491 A
  • Filed: 03/31/1994
  • Issued: 05/02/1995
  • Est. Priority Date: 03/10/1992
  • Status: Expired due to Term
First Claim
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1. Color transformation apparatus for transforming an input color space into an output color space and comprising:

  • a first LUT, including memory cells, for transforming a first portion of the input color space into a corresponding first portion of the output color space;

    a second LUT, including memory cells, for transforming a second portion of the input color space into a corresponding second portion of the output color space;

    a control unit for channeling input values included in the first and second portions of the color space to the first and second LUTs respectively,a ratio of the number of memory cells in the first LUT and the number of possible input values channeled thereto differs from a corresponding ratio for the second LUT; and

    at least one more LUT for transforming a corresponding one of at least one more portion of the input color space into a corresponding portion of the output color space, the control unit also being operative to channel input values included in each of the at least one more portion of the input color space to a corresponding one of the at least one more LUTs.

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