https://scholars.lib.ntu.edu.tw/handle/123456789/412954
標題: | Scalable mobile video question-answering system with locally aggregated descriptors and random projection | 作者: | Wu G.-L. Su Y.-C. Chiu T.-H. Hsieh L.-C. WINSTON HSU |
公開日期: | 2011 | 起(迄)頁: | 647-650 | 來源出版物: | 2011 ACM Multimedia Conference | 摘要: | We present a scalable mobile video Question-Answering system with locally aggregated descriptors and random projection using user-generated videos all around the world for ACM Multimedia 2011 Technicolor challenge: "precise event recognition and description from video excerpts." Our proposed system takes a video excerpt as a query and explores its canonical semantics of that. We collect a public events video dataset containing 7 topics with 1963 YouTube videos to evaluate our proposed system. The experiment results show that our proposed video feature representation outperforms a state-of-the-art near-duplicate retrieval based on color histogram. The signature generated by random projection not only ensures real-time efficiency but also achieves a competitive MAP performance with original feature. ? 2011 ACM. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/412954 | ISBN: | 9781450306164 | DOI: | 10.1145/2072298.2072409 |
顯示於: | 資訊工程學系 |
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