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Method and apparatus for video coding

  • US 20020025001A1
  • Filed: 04/27/2001
  • Published: 02/28/2002
  • Est. Priority Date: 05/11/2000
  • Status: Active Grant
First Claim
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1. A method for obtaining an estimated motion vector for use in block-based video encoding, the method comprising:

  • refining a predicted motion vector for a current block to obtain an estimated motion vector in a sequence comprising a plurality of steps; and

    , before each of a plurality of the steps in the sequence, computing a similarity value between the block and another block indicated by the current estimated motion vector, comparing the similarity value to a threshold, and not performing subsequent steps in the sequence if the comparison indicates that the current estimated motion vector provides a match between the current block and the another block which is better than a match corresponding to the threshold.

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