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Method for correcting gradients of irregular spaced graphic data

  • US 6,680,735 B1
  • Filed: 11/17/2000
  • Issued: 01/20/2004
  • Est. Priority Date: 10/04/2000
  • Status: Expired due to Term
First Claim
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1. A method for correcting gradients of graphic data, comprising:

  • arranging the graphic data on a plurality of irregular spaced grid points;

    estimating a vector denoting a spatial rate of change of the graphic data at each irregular spaced grid point; and

    applying a correction matrix to each vector to determine a corrected gradient at each irregular spaced grid point.

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