Patch-level spatial layout for classification and weakly supervised localization

Valentina Zadrija 1 Josip Krapac 1 Jakob Verbeek 2 Siniša Šegvić 1
1 FER - Faculty of Electrical Engineering and Computing [Zagreb]
2 LEAR - Learning and recognition in vision
Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, INPG - Institut National Polytechnique de Grenoble
Abstract : We propose a discriminative patch-level spatial layout model suitable for training with weak supervision. We start from a block-sparse model of patch appearance based on the normalized Fisher vector representation. The appearance model is responsible for i) selecting a discriminative subset of visual words, and ii) identifying distinctive patches assigned to the selected subset. These patches are further filtered by a sparse spatial model operating on a novel representation of pairwise patch layout. We have evaluated the proposed pipeline in image classification and weakly supervised localization experiments on a public traffic sign dataset. The results show significant advantage of the proposed spatial model over state of the art appearance models.
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Communication dans un congrès
Juergen Gall; Peter Gehler; Bastian Leibe. 37th German Conference on Pattern Recognition, GCPR 2015, Oct 2015, Aachen, Germany. Springer, 9358, pp.492-503, Lecture Notes in Computer Science. 〈http://gcpr2015.rwth-aachen.de/〉. 〈10.1007/978-3-319-24947-6_41〉
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Valentina Zadrija, Josip Krapac, Jakob Verbeek, Siniša Šegvić. Patch-level spatial layout for classification and weakly supervised localization. Juergen Gall; Peter Gehler; Bastian Leibe. 37th German Conference on Pattern Recognition, GCPR 2015, Oct 2015, Aachen, Germany. Springer, 9358, pp.492-503, Lecture Notes in Computer Science. 〈http://gcpr2015.rwth-aachen.de/〉. 〈10.1007/978-3-319-24947-6_41〉. 〈hal-01186677〉

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