Wavelet directional histograms for classification of human gestures represented by spatio-temporal templates

Kumar, D, McLachlan, N, Kumar, S and Sharma, A 2004, 'Wavelet directional histograms for classification of human gestures represented by spatio-temporal templates', in Proceedings of the 10th International Multi-Media Modelling Conference, Brisbane, 5-7 January 2004.


Document type: Conference Paper
Collection: Conference Papers

Title Wavelet directional histograms for classification of human gestures represented by spatio-temporal templates
Author(s) Kumar, D
McLachlan, N
Kumar, S
Sharma, A
Year 2004
Conference name International Multimedia Modelling Conference
Conference location Brisbane
Conference dates 5-7 January 2004
Proceedings title Proceedings of the 10th International Multi-Media Modelling Conference
Publisher IEEE
Place of publication Brisbane
Abstract This paper evaluates the efficacy of directional information of wavelet multi-resolution decomposition for histogram-based classification of human gestures represented by spatio-temporal templates. This template collapses temporal component into gesture representation in a way that no explicit sequence matching or temporal analysis is needed, and characterizes the motion from a very high dimensional space to a low dimensional space. These templates are modified to be invariant to translation, rotation and scale. Two dimensional, 3 level dyadic wavelet transform applied on these templates results in one low pass subimage and nine highpass directional subimages. Histograms of wavelet coefficients at different scales are compared to establish significance of available information for classification. The preliminary experiments show that while the statistical properties of the template provide high level of classification accuracy, the available information in high pass or low pass decompositions by itself is not sufficient to provide significant efficiency of accuracy.
Subjects Biomedical Engineering not elsewhere classified
DOI - identifier 10.1109/MULMM.2004.1264967
Copyright notice © 2004 IEEE
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