IMAGE PROCESSING WITH OCCLUSION AND ERROR HANDLING IN MOTION FIELDS
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United States of America Patent
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Issued Date -
Dec 27, 2018
app pub date -
Jun 26, 2017
filing date -
Jun 26, 2017
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Abstract
Methods, devices and computer-readable mediums for detecting occlusions which occur due to foreground object movement with respect to a background between first and second successive frames. Occlusion detection may use motion estimation with respect to at least a third frame temporally preceding the first frame. Occlusion detection may be based on one or more assumptions such as: occlusion motion vectors are different than other background motion vectors; occlusion motions are likely to be similar to foreground occluding motion; and/or motion estimation will match an occlusion block with a block belonging to a common background object. Occlusion detection may be combined with motion error detection based on a motion field divergence using a motion vector assigned to the occlusion, e.g., for generating an intermediate frame in frame up rate conversion (FRUC).
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