Number of reference fields for an interlaced forward-predicted field
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United States of America Patent
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Aug 18, 2009
Grant Date -
Mar 10, 2005
app pub date -
Sep 2, 2004
filing date -
Sep 7, 2003
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Abstract
Techniques and tools for signaling the number of reference fields for an interlaced forward-predicted field are described. For example, a video decoder processes a first signal indicating whether an interlaced forward-predicted field has one or two reference fields for motion compensation. If the first signal indicates the interlaced forward-predicted field has one reference field, the decoder processes a second signal identifying the one reference field from among the two reference fields. On the other hand, if the first signal indicates the interlaced forward-predicted field has two reference fields, for each of multiple motion vectors of the interlaced forward-predicted field, the decoder processes a third signal for selecting between the two reference fields. A video encoder performs corresponding signaling.
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