Temporal filtering using object motion estimation
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United States of America Patent
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Dec 29, 2009
Grant Date -
N/A
app pub date -
Dec 5, 2003
filing date -
Dec 6, 2002
priority date (Note) -
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Abstract
A method and apparatus for temporally filtering a video sequence using motion compensation in which motion information captures the motion of objects is disclosed. Pixels from a current frame are aligned with matching pixels from previous and/or future frames according to the motion of the surrounding object of arbitrary shape. A weighted average of the corresponding pixels is taken for each pixel in the current frame to produce a filtered version of the current frame. The weights may be adjusted to compensate for similarities between the frames and for blur transitions near object boundaries. A lighting offset may also be used to prevent erroneous lighting shifts during filtering.
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