Unifying boundary and region-based information for geodesic active tracking (1999) [31 citations — 6 self]
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@INPROCEEDINGS{Paragios99unifyingboundary,author = {Nikos Paragios and Rachid Deriche},
title = {Unifying boundary and region-based information for geodesic active tracking},
booktitle = {In IEEE CVPR},
year = {1999},
pages = {300--305}
}
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Abstract:
This paper addresses the problem of tracking several non-rigid objects over a sequence of frames acquired from a static observer using boundary and region-based information under a coupled geodesic active contour framework. Given the current frame, a statistical analysis is performed on the observed difference frame which provides a measurement that distinguishes between the static and mobile regions in terms of conditional probabilities. An objective function is defined that integrates boundary-based and region-based module by seeking curves that attract the object boundaries and maximize the a posteriori segmentation probability on the interior curve regions with respect to intensity and motion properties. This function is minimized using a gradient descent method. The associated EulerLagrange PDE is implemented using a Level-Set approach, where a very fast front propagation algorithm evolves the initial curve towards the final tracking result. Very promising experimental results are provided using real video sequences.
