Discriminant random field and patch-based redundancy analysis for image change detection

Charles Kervrann 1 Jérôme Boulanger 2 Thierry Pecot 1, 3, 4 Patrick Pérez 1
1 VISTAS - Spatio-Temporal Vision and Learning
IRISA - Institut de Recherche en Informatique et Systèmes Aléatoires, Inria Rennes – Bretagne Atlantique
3 UR0341 MIA-Jouy, Jouy en Josas
MIA - Unité de recherche Mathématiques et Informatique Appliquées
Abstract : To develop better image change detection algorithms, new models able to capture all the spatio-temporal regularities and geometries seen in an image pair are needed. In con- trast to the usual pixel-wise methods, we propose a patch- based formulation for modeling semi-local interactions and detecting occlusions and other local or regional changes in an image pair. To this end, the image redundancy property is exploited to detect unusual spatio-temporal patterns in the scene. We first define adaptive detectors of changes between two given image patches and combine locally in space and scale such detectors. The resulting score at a given loca- tion is exploited within a discriminant Markov random field (DRF) whose global optimization flags out changes with no optical flow computation. Experimental results on several applications demonstrate that the method performs well at detecting occlusions and meaningful regional changes and is especially robust in the case of low signal-to-noise ratios.
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Communication dans un congrès
EEE Int. Workshop on Machine Learning for Signal Processing, Sep 2009, Grenoble, France. 2009
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Charles Kervrann, Jérôme Boulanger, Thierry Pecot, Patrick Pérez. Discriminant random field and patch-based redundancy analysis for image change detection. EEE Int. Workshop on Machine Learning for Signal Processing, Sep 2009, Grenoble, France. 2009. 〈hal-00794897〉

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