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Special effects using polar image coordinates

  • US 5,051,734 A
  • Filed: 01/11/1990
  • Issued: 09/24/1991
  • Est. Priority Date: 01/11/1990
  • Status: Expired due to Term
First Claim
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1. A mapping function circuit comprising:

  • means for converting rectangular coordinate values representing a location of an input pixel into corresponding polar coordinate values;

    means for manipulating the polar coordinate values to produce modified polar coordinate values according to a desired effect; and

    means for modifying the rectangular coordinate values by the modified polar coordinate values to produce modified rectangular coordinate values representing the desired effect.

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