Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/7429
Title: Parallel implementation of a robust optical flow technique
Authors: Sánchez, Javier 
Monzón López, Nelson Manuel 
Salgado de la Nuez, Agustín Javier 
UNESCO Clasification: 220990 Tratamiento digital. Imágenes
Keywords: Optical flow
Variational methods
PDE
Multicore
OpenMP, et al
Issue Date: 2012
Journal: CTIM Technical Report 
Abstract: 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.
URI: http://hdl.handle.net/10553/7429
ISSN: 2254-2353
Source: CTIM technical report [ISSN 2254-2353] Las Palmas de Gran Canaria: Centro de Tecnologías de la Imágen,n. 1, p. 1-16, (2012)
Rights: by-nc-nd
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