Method and apparatus for encoding pictures including a moving object
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United States of America Patent
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Apr 29, 1997
Issued Date -
N/A
app pub date -
Oct 21, 1993
filing date -
Sep 7, 1990
priority date (Note) -
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status (Latency Note)
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Abstract
A method of encoding a sequence of images including a moving object, comprises forming an initial template, extracting a mask outlining the object, dividing the template into a plurality (for example sixteen) sub-templates, searching the next frame to find a match with the template, searching the next frame to find a match with each of the sub-templates, determining the displacements of each of the sub-templates with respect to the template, using the displacements to determine affine transform coefficients and performing an affine transform to produce an updated template and updated mask. Encoding is performed at a higher resolution for portions within the outline than for portions outside the outline.
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