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Displacement Following of Hidden Objects in a Video Sequence

Dibos, Françoise; Sanchez, Olivia (2004), Displacement Following of Hidden Objects in a Video Sequence, International Journal of Computer Vision, 57, 2, p. 91-105. http://dx.doi.org/10.1023/B:VISI.0000013084.09631.d8

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Type
Article accepté pour publication ou publié
Date
2004
Nom de la revue
International Journal of Computer Vision
Volume
57
Numéro
2
Éditeur
Springer
Pages
91-105
Identifiant publication
Métadonnées
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Auteur(s)
Dibos, Françoise
Sanchez, Olivia
Résumé (EN)
In a video sequence, computing the motion of an object requires the continuity of the apparent velocity field. This property does not hold when the object is hidden by an occlusion during its motion. The minimization of an energy functional leads to a simple algorithm which allows the recovery of the most likely trajectory of the occluded object from optical flow data at the border of the occlusion. Optical flow used for developing our method is an improvement on any variational technique of computing it. This improvement is based on a multichannel segmentation.
Mots-clés
motion estimation; optical flow; segmentation; occlusion; variational methods