Multimedia event detection using segment-based approach for motion feature

Authors:
Sang Phan;Thanh Duc Ngo;Vu Lam;Son Tran;Duy-Dinh Le;Duc Anh Duong;Shin'ichi Satoh
Affiliations:
The Graduate University for Advanced Studies, Tokyo, Japan;The Graduate University for Advanced Studies, Tokyo, Japan;University of Science, VNU-HCM, Vietnam;University of Science, VNU-HCM, Vietnam;National Institute of Informatics, Tokyo, Japan;University of Information Technology, VNU-HCM, Vietnam;National Institute of Informatics, Tokyo, Japan
Venue:
PCM'12 Proceedings of the 13th Pacific-Rim conference on Advances in Multimedia Information Processing
Year:
2012

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Abstract

Detecting event in multimedia video has become a popular research topic. One of the most important clues to determine an event in video is its motion features. Currently, motion features are often extracted from the whole video using dense sampling strategy. However, this extraction method is computationally prohibitive when it comes to large scale video dataset. Moreover, video length may be very different, which makes it unreliable to compare the feature between videos. In this paper, we propose to use segment-based approach to extract motion feature. Basically, original videos are quantized into fixed-length segments for both training and testing, while still keep evaluation at video-level. Our approach has achieved promising results when applying for dense trajectory motion feature on TRECVID 2010 Multimedia Event Detection (MED) dataset. Combining with global and local features, our event detection system has comparable performance with other state-of-the-art MED systems, while the computational cost is significantly reduced.