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Methods and apparatus for converting color values

  • US 6,950,110 B2
  • Filed: 07/23/2004
  • Issued: 09/27/2005
  • Est. Priority Date: 05/24/2002
  • Status: Expired due to Term
First Claim
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1. A color conversion system for converting a first color value to a second color value, the system comprising:

  • a first module comprising an input coupled to the first color value, a lookup table coupled to the input and to an interpolator, the lookup table comprising a plurality of entries, each entry associating a first value to a second value, the interpolator coupled to an output; and

    a second module comprising a decompressor comprising an input coupled to the output of the first module, and an output providing the second color value;

    wherein the lookup table is created by;

    identifying an entry that has a second value equal to a predetermined value, and that is adjacent an entry having a second value equal to a number other than the predetermined value;

    compressing the second values of a first plurality of the entries to form corresponding intermediate values; and

    replacing the second value of the identified entry with a value determined by a regression that includes the intermediate value of the adjacent entry.

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