Method and device for tracking moving objects in image
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United States of America Patent
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Apr 19, 2011
Grant Date -
May 4, 2006
app pub date -
Dec 15, 2003
filing date -
Dec 20, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
To track moving objects in a smaller number of temporarily stored time-series pictures, regarding N consecutive pictures (N≧2) within the time-series pictures, a method comprises the steps of: (a) by assigning the same ID to adjacent blocks if the absolute value of the difference between motion vectors of the blocks are less than a predetermined value, assigning different IDs to moving objects overlapping in a picture; (b) judging whether or not a first object of a first block group assigned a first ID and a second object of a second block group assigned a second ID are in contact with each other in each of the N consecutive pictures, and further each correlation between the first objects of temporally adjacent pictures in the N consecutive pictures is more than or equal to a predetermined value; and (c) tracking the first and second objects backward in time after the judgment at step (b) is positive.
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