Segmentation and tracking of multiple video objects

Authors:
A. Colombari;A. Fusiello;V. Murino
Affiliations:
Dipartimento di Informatica, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy;Dipartimento di Informatica, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy;Dipartimento di Informatica, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
Venue:
Pattern Recognition
Year:
2007

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Abstract

This paper describes a technique that produces a content-based representation of a video shot composed by a background (still) mosaic and one or more foreground moving objects. Segmentation of moving objects is based on ego-motion compensation and on background modelling using tools from robust statistics. Region matching is carried out by an algorithm that operates on the Mahalanobis distance between region descriptors in two subsequent frames and uses singular value decomposition to compute a set of correspondences satisfying both the principle of proximity and the principle of exclusion. The sequence is represented as a layered graph, and specific techniques are introduced to cope with crossing and occlusion. Examples of MPEG-4 (main profile) encoding are reported.