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Image signal converting method and image signal converting apparatus

  • US 5,946,044 A
  • Filed: 06/20/1996
  • Issued: 08/31/1999
  • Est. Priority Date: 06/30/1995
  • Status: Expired due to Term
First Claim
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1. An image signal converting apparatus for converting a first input image signal to a second image signal different from said first image signal, comprising:

  • a class code deciding means for deciding the class of a noticed pixel in accordance with the movement indicated by a change of at least one pixel in the vicinity of the noticed pixel between at least a first input image and a second input image of said first input image signal and patterns of at least one pixel in the vicinity of the noticed pixel in at least one of said first or second input images of said first input image signal, and generating a class code showing the class;

    a predictive coefficient data storage means for storing predictive coefficient data serving as the information for converting said first input image signal to said second input image signal for each class code to output said predictive coefficient data corresponding to said class code; and

    a predictive operating means for generating said second image signal by using the predictive coefficient data output from said predictive coefficient data storage means corresponding to said class code and a plurality of pixels spatially and/or temporally present in the vicinity of said noticed pixel and thereby performing predictive operation.

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