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Conference papers

P-CNN: Pose-based CNN Features for Action Recognition

Guilhem Chéron 1, 2, 3, 4 Ivan Laptev 1, 2 Cordelia Schmid 3
1 WILLOW - Models of visual object recognition and scene understanding
CNRS - Centre National de la Recherche Scientifique : UMR8548, Inria Paris-Rocquencourt, DI-ENS - Département d'informatique - ENS Paris
3 LEAR - Learning and recognition in vision
Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, Grenoble INP - Institut polytechnique de Grenoble - Grenoble Institute of Technology
Abstract : This work targets human action recognition in video. While recent methods typically represent actions by statistics of local video features, here we argue for the importance of a representation derived from human pose. To this end we propose a new Pose-based Convolutional Neural Network descriptor (P-CNN) for action recognition. The descriptor aggregates motion and appearance information along tracks of human body parts. We investigate different schemes of temporal aggregation and experiment with P-CNN features obtained both for automatically estimated and manually annotated human poses. We evaluate our method on the recent and challenging JHMDB and MPII Cooking datasets. For both datasets our method shows consistent improvement over the state of the art.
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Submitted on : Wednesday, September 23, 2015 - 1:55:35 PM
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Guilhem Chéron, Ivan Laptev, Cordelia Schmid. P-CNN: Pose-based CNN Features for Action Recognition. ICCV - IEEE International Conference on Computer Vision, Dec 2015, Santiago, Chile. pp.3218-3226, ⟨10.1109/ICCV.2015.368⟩. ⟨hal-01187690⟩



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