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Wavelets and Optical Flow Motion Estimation

Published online by Cambridge University Press:  28 May 2015

P. Dérian*
Affiliation:
Departments of Physics and Geosciences, California State University Chico, Chico, CA 95929-0555, USA
P. Héas*
Affiliation:
INRIA Rennes-Bretagne Atlantique, Campus de Beaulieu, 35042 Rennes CEDEX, France
C. Herzet*
Affiliation:
INRIA Rennes-Bretagne Atlantique, Campus de Beaulieu, 35042 Rennes CEDEX, France
E. Mémin*
Affiliation:
INRIA Rennes-Bretagne Atlantique, Campus de Beaulieu, 35042 Rennes CEDEX, France
*
Corresponding author.Email address:pderian@csuchico.edu
Corresponding author.Email address:Patrick.Heas@inria.fr
Corresponding author.Email address:Cedric.Herzet@inria.fr
Corresponding author.Email address:Etienne.Memin@inria.fr
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Abstract

This article describes the implementation of a simple wavelet-based optical-flow motion estimator dedicated to continuous motions such as fluid flows. The wavelet representation of the unknown velocity field is considered. This scale-space representation, associated to a simple gradient-based optimization algorithm, sets up a well-defined multiresolution framework for the optical flow estimation. Moreover, a very simple closure mechanism, approaching locally the solution by high-order polynomials is provided by truncating the wavelet basis at fine scales. Accuracy and efficiency of the proposed method is evaluated on image sequences of turbulent fluid flows.

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Type
Research Article
Copyright
Copyright © Global Science Press Limited 2013

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