Method of video encoding using windows and system thereof
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United States of America Patent
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Aug 5, 2008
Grant Date -
Jul 22, 2004
app pub date -
Jan 16, 2003
filing date -
Jan 16, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A first search window within a reference frame of video data is identified along with a first correlation threshold value for the first window. The first correlation threshold value is a value to which correlation factors between a pixel set being encoded and pixels sets of the first search window are compared. For example, if a correlation factor between a specific pixel set of the first search window and a pixel set being encoded meets the first threshold value, a successful match between the two pixel sets has been found, and a corresponding motion vector can be assigned to the pixel set being encoded. If none of the pixel sets within the first window meet the first threshold value, a second search window within the first frame is selected along with a second correlation threshold value. The correlation factors for pixel sets in the second window are compared to the second correlation threshold value.
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