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Authors: Pau Agustí ; V. Javier Traver ; Filiberto Pla and Raúl Montoliu

Affiliation: Jaume-I University, Spain

ISBN: 978-989-8565-47-1

Keyword(s): Clustering, Human Action Recognition, Random Projections, Bag-of-Words.

Related Ontology Subjects/Areas/Topics: Computer Vision, Visualization and Computer Graphics ; Features Extraction ; Image and Video Analysis

Abstract: During the last years, the bag-of-words (BoW) approach has become quite popular for representing actions from video sequences. While the BoW is conceptually very simple and practically effective, it suffers from some drawbacks. In particular, the quantization procedure behind the BoW usually relies on a computationally heavy k-means clustering. In this work we explore whether alternative approaches as simple as random projections, which are data agnostic, can represent a practical alternative. Results reveal that this randomized quantization offers an interesting computational-accuracy trade-off, because although recognition performance is not yet as high as with k-means, it is still competitive with an speed-up higher than one order of magnitude.

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Paper citation in several formats:
Agustí P., Traver V., Pla F. and Montoliu R. (2013). Bag-of-Words for Action Recognition using Random Projections - An Exploratory Study.In Proceedings of the International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, (VISIGRAPP 2013) ISBN 978-989-8565-47-1, pages 614-619. DOI: 10.5220/0004216906140619

@conference{visapp13,
author={Pau Agustí and V. Javier Traver and Filiberto Pla and Raúl Montoliu},
title={Bag-of-Words for Action Recognition using Random Projections - An Exploratory Study},
booktitle={Proceedings of the International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, (VISIGRAPP 2013)},
year={2013},
pages={614-619},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004216906140619},
isbn={978-989-8565-47-1},
}

TY - CONF

JO - Proceedings of the International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, (VISIGRAPP 2013)
TI - Bag-of-Words for Action Recognition using Random Projections - An Exploratory Study
SN - 978-989-8565-47-1
AU - Agustí P.
AU - Traver V.
AU - Pla F.
AU - Montoliu R.
PY - 2013
SP - 614
EP - 619
DO - 10.5220/0004216906140619

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