Multi-modal object signature
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United States of America Patent
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Feb 11, 2014
Grant Date -
Jul 1, 2010
app pub date -
Dec 23, 2009
filing date -
Dec 30, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Disclosed herein are a method and system for appearance-invariant tracking of an object in an image sequence. A track is associated with the image sequence, wherein the track has an associated track signature comprising at least one mode. The method detects the object in a frame of the image sequence (1020). A representative signature is associated with the detected object. The method determines a spatial difference measure between the track and the detected object, and determines, for each mode of the track signature, a visual difference (1410) between the mode of the track signature and the representative signature to obtain a lowest determined visual difference (1420). The method then utilises the spatial difference measure and the lowest determined visual difference to perform at least one of the following steps of: (i) associating the detected object with the track (1440), and (ii) adding a new mode to the track signature (1460), based on the representative signature.
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