Method and apparatus for correcting motion vectors

Details Method and apparatus for correcting motion vectors Method and apparatus for correcting motion vectors

1997-11-24

1998-08-11

Lee, Richard

Television

Bandwidth reduction system

Data rate reduction

348699, H04N 732

Patent

active

057934304

ABSTRACT:
Motion vectors resulting from block matching are corrected for periodic structures by taking a more reliable vector from an edge of a moving object containing the periodic structure. This is done by calculating and comparing different error combinations to identify periodic structures and replacing a current motion vector with one of an adjacent pixel block either from the block to the left or from the block above, which ever yields the smaller error in the current block, or by taking a combination (e.g., mean) of both vectors. Advantageously, artifacts such as phase reversal of information in interpolated fields due to the presence of an erroneous vector in a periodic structure are reduced and very little additional processing is required after the block matching itself.

REFERENCES:
patent: 4862264 (1989-08-01), Wells et al.
patent: 4864398 (1989-09-01), Avis et al.
patent: 5016102 (1991-05-01), Avis
patent: 5027203 (1991-06-01), Samad et al.

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