Title
Bayesian Non-Parametric Inference for Manifold Based MoCap Representation
Abstract
We propose a novel approach to human action recognition, with motion capture data (MoCap), based on grouping sub-body parts. By representing configurations of actions as manifolds, joint positions are mapped on a subspace via principal geodesic analysis. The reduced space is still highly informative and allows for classification based on a non-parametric Bayesian approach, generating behaviors for each sub-body part. Having partitioned the set of joints, poses relative to a sub-body part are exchangeable, given a specified prior and can elicit, in principle, infinite behaviors. The generation of these behaviors is specified by a Dirichlet process mixture. We show with several experiments that the recognition gives very promising results, outperforming methods requiring temporal alignment.
Year
DOI
Venue
2015
10.1109/ICCV.2015.523
ICCV
Field
DocType
ISSN
Computer vision,Motion capture,Pattern recognition,Subspace topology,Computer science,Inference,Action recognition,Principal geodesic analysis,Nonparametric statistics,Artificial intelligence,Manifold,Bayesian probability
Conference
1550-5499
Citations 
PageRank 
References 
1
0.35
11
Authors
4
Name
Order
Citations
PageRank
Fabrizio Natola110.35
Valsamis Ntouskos2125.42
Marta Sanzari310.35
Fiora Pirri468494.09