Method and device for tracking moving objects in image

Details Method and device for tracking moving objects in image Method and device for tracking moving objects in image

2011-04-19

2011-04-19

Ustaris, Joseph G (Department: 2483)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240160, C375S240080

Reexamination Certificate

active

07929613

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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Alan J. Lipton et al.,—Moving Target Classification and Tracking from Real-time Video—, Proc. of the 1998 DARPA Image Understanding Workshop 8-4 (Nov. 1998).

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