A variational approach for multi-valued velocity field estimation in transparent sequences

Authors:
Alonso Ramírez-Manzanares;Mariano Rivera;Pierre Kornprobst;François Lauze
Affiliations:
Centro de Investigacion en Matematicas A.C., Guanajuato, Mexico;Centro de Investigacion en Matematicas A.C., Guanajuato, Mexico;INRIA, Odyssée Lab., Sophia Antipolis, France;Nordic Bioscience Imaging A/S, Herlev, Denmark
Venue:
SSVM'07 Proceedings of the 1st international conference on Scale space and variational methods in computer vision
Year:
2007

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Abstract

We propose a variational approach for multi-valued velocity field estimation in transparent sequences. Starting from existing local motion estimators, we show a variational model for integrating in space and time these local estimations to obtain a robust estimation of the multi-valued velocity field. With this approach, we can indeed estimate some multi-valued velocity fields which are not necessarily piecewise constant on a layer: Each layer can evolve according to non-parametric optical flow. We show how our approach outperforms some existing approaches, and we illustrate its capabilities on several challenging synthetic/ real sequences.