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Effective tracking through tree-search

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1 Author(s)
Freedman, D. ; Dept. of Comput. Sci., Rensselaer Polytech. Inst., Troy, NY, USA

A new contour tracking algorithm is presented. Tracking is posed as a matching problem between curves constructed out of edges in the image, and some shape space describing the class of objects of interest. The main contributions of the paper are to present an algorithm which solves this problem accurately and efficiently, in a provable manner. In particular, the algorithm's efficiency derives from a novel tree-search algorithm through the shape space, which allows for much of the shape space to be explored with very little effort. This latter property makes the algorithm effective in highly cluttered scenes, as is demonstrated in an experimental comparison with a condensation tracker.

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Pattern Analysis and Machine Intelligence, IEEE Transactions on  (Volume:25 ,  Issue: 5 )