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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