Acceda
author
Sánchez Pérez, Javier
author
Monzón López, Nelson
author
Salgado de la Nuez, Agustín Javier
2012-05-22T04:00:54Z
2012-05-22T04:00:54Z
2012-03-16
http://hdl.handle.net/10553/7429
[EN] The accuracy and performance of current variational optical ow methods have considerably increased during the last years. The complexity of these techniques is high and enough care has to be taken for the implementation. The aim of this work is to present a comprehensible implementation of recent variational optical flow methods.
We start with an energy model that relies on brightness and gradient constancy terms and a ow-based smoothness term. We minimize this energy model and derive an e cient implicit numerical scheme. In the experimental results, we evaluate the accuracy and performance of this implementation with the Middlebury benchmark database. We show that it is a competitive solution with respect to current methods
in the literature. In order to increase the performance, we use a simple strategy to parallelize the execution on multi-core processors.
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Previous issue date: 2012-03-16
by-nc-nd
CTIM technical report. --Las Palmas de Gran Canaria: Centro de Tecnologías de la Imágen, 2012. --Nº 1. --16 p. --ISSN 2254-2353
220990 Tratamiento digital. Imágenes
Optical flow
Variational methods
PDE
Multicore
OpenMP
Flujo óptico
Imágenes
Métodos variacionales
Parallel implementation of a robust optical flow technique
Informes y Memorias
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