Video coding system for estimating a motion vector field by using a series of motion estimators of varying complexity
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United States of America Patent
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Feb 25, 2003
Grant Date -
May 16, 2002
app pub date -
Sep 19, 1997
filing date -
Sep 20, 1996
priority date (Note) -
Expired
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Abstract
A motion estimation system for a video coder has an input for a video image to be coded, and includes a series of motion estimators of varying complexity for estimating a motion vector field between a received image and a reference image. The estimation is accomplished by sequential use of the estimators, wherein a subsequent estimator of the sequence is selected by a controller based on a prediction error, associated with the motion vector field estimated by a currently selected estimator, exceeding a predetermined threshold.
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