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Video encoder using global motion estimation and polygonal patch motion estimation

  • US 5,592,228 A
  • Filed: 03/02/1994
  • Issued: 01/07/1997
  • Est. Priority Date: 03/04/1993
  • Status: Expired due to Fees
First Claim
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1. A video encoding apparatus comprising:

  • a moving region analyzing means for extracting a moving region from an input video signal, analyzing its motion and outputting a residual signal relative to a reconstructed two-dimensional picture and motion parameters;

    a residual coding means for encoding said residual signal from said moving region analyzing means to form encoded residual data;

    a reconstruction means for creating the reconstructed picture using said motion parameters from said moving region analyzing means and said encoded residual data from said residual coding means; and

    a variable length coding means for performing a variable length coding of said motion parameters from said moving region analyzing means and said encoded residual data from said residual coding means;

    wherein said moving region analyzing means comprises;

    a global motion estimating means for estimating global motion parameters of the moving region;

    a polygonal patch motion estimating means for estimating polygonal patch motion parameters for local motions within the moving region by applying polygonal patches to the moving region using the global motion parameters estimated by said global motion estimating means; and

    a motion compensating means for performing a motion compensation of the reconstructed picture using the global motion parameters estimated by said global motion estimating means and the polygonal patch motion parameters estimated by said polygonal patch motion estimating means.

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