Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/54723
Título: Efficient mechanism for discontinuity preserving in optical flow methods
Autores/as: Monzón, Nelson 
Sánchez, Javier 
Salgado de la Nuez, Agustín 
Clasificación UNESCO: 220990 Tratamiento digital. Imágenes
Palabras clave: Optical flow
Motion estimation
TV-L1
Variational method
Discontinuity-preserving
Fecha de publicación: 2014
Editor/a: 0302-9743
Publicación seriada: Lecture Notes in Computer Science 
Conferencia: 6th International Conference on Image and Signal Processing (ICISP) 
6th International Conference on Image and Signal Processing, ICISP 2014 
Resumen: We propose an efficient solution for preserving the motion boundaries in variational optical flow methods. This is a key problem of recent TV-L 1 methods, which typically create rounded effects at flow edges. A simple strategy to overcome this problem consists in inhibiting the smoothing at high image gradients. However, depending on the strength of the mitigating function, this solution may derive in an ill-posed formulation. Therefore, this type of approaches is prone to produce instabilities in the estimation of the flow fields. In this work, we modify this strategy to avoid this inconvenience. Then, we show that it provides very good results with the advantage that it yields an unconditionally stable scheme. In the experimental results, we present a detailed study and comparison between the different alternatives.
URI: http://hdl.handle.net/10553/54723
ISBN: 9783319079974
ISSN: 0302-9743
DOI: 10.1007/978-3-319-07998-1_49
Fuente: Elmoataz A., Lezoray O., Nouboud F., Mammass D. (eds) Image and Signal Processing. ICISP 2014. Lecture Notes in Computer Science, vol 8509, p. 425-432. Springer, Cham
Colección:Actas de congresos
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