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Method and apparatus for encoding and decoding color images

  • US 5,361,147 A
  • Filed: 12/23/1993
  • Issued: 11/01/1994
  • Est. Priority Date: 02/06/1990
  • Status: Expired due to Term
First Claim
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1. An image encoding apparatus comprising:

  • a) input means for inputting color image data representing a color image;

    b) first detection means for detecting an edge portion in the color image;

    c) second detection means for detecting a portion having a specific color;

    d) discrimination means for discriminating the edge portion having the specific color based on the detection result of said first and second detection means;

    e) first encoding means for encoding the edge portion of the specific color discriminated by said discrimination means by using a first encoding method; and

    f) second encoding means for encoding the color image data of at least a portion of the color image other than the edge portion of the specific color by using a second encoding method different from the first encoding method.

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