Title

Classifying web videos using a global video descriptor

Authors

Authors

B. Solmaz; S. M. Assari;M. Shah

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

Mach. Vis. Appl.

Keywords

Video descriptors; Action recognition; Frequency spectrum; Spatio-temporal analysis; RECOGNITION; Computer Science, Artificial Intelligence; Computer Science, ; Cybernetics; Engineering, Electrical & Electronic

Abstract

Computing descriptors for videos is a crucial task in computer vision. In this paper, we propose a global video descriptor for classification of videos. Our method, bypasses the detection of interest points, the extraction of local video descriptors and the quantization of descriptors into a code book; it represents each video sequence as a single feature vector. Our global descriptor is computed by applying a bank of 3-D spatio-temporal filters on the frequency spectrum of a video sequence; hence, it integrates the information about the motion and scene structure. We tested our approach on three datasets, KTH (Schuldt et al., Proceedings of the 17th international conference on, pattern recognition (ICPR'04), vol. 3, pp. 32-36, 2004), UCF50 (http://vision.eecs.ucf.edu/datasetsActions.html) and HMDB51 (Kuehne et al., HMDB: a large video database for human motion recognition, 2011), and obtained promising results which demonstrate the robustness and the discriminative power of our global video descriptor for classifying videos of various actions. In addition, the combination of our global descriptor and a local descriptor resulted in the highest classification accuracies on UCF50 and HMDB51 datasets.

Journal Title

Machine Vision and Applications

Volume

24

Issue/Number

7

Publication Date

1-1-2013

Document Type

Article

Language

English

First Page

1473

Last Page

1485

WOS Identifier

WOS:000324499000013

ISSN

0932-8092

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