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Compact Video Description for Copy Detection with Precise Temporal Alignment
Abstract : This paper introduces a very compact yet discriminative video description, which allows example-based search in a large number of frames corresponding to thousands of hours of video. Our description extracts one descriptor per indexed video frame by aggregating a set of local descriptors. These frame descriptors are encoded using a time-aware hierarchical indexing structure. A modified temporal Hough voting scheme is used to rank the retrieved database videos and estimate segments in them that match the query. If we use a dense temporal description of the videos, matched video segments are localized with excellent precision. Experimental results on the Trecvid 2008 copy detection task and a set of 38000 videos from YouTube show that our method offers an excellent trade-off between search accuracy, efficiency and memory usage.
Cited literature [21 references]
https://hal.inria.fr/inria-00548641
Contributor : Hervé Jégou Connect in order to contact the contributor
Submitted on : Tuesday, March 22, 2011 - 9:22:46 PM
Last modification on : Tuesday, October 19, 2021 - 11:13:05 PM
Long-term archiving on: : Sunday, December 4, 2016 - 1:45:58 AM
Contributor : Hervé Jégou Connect in order to contact the contributor
Submitted on : Tuesday, March 22, 2011 - 9:22:46 PM
Last modification on : Tuesday, October 19, 2021 - 11:13:05 PM
Long-term archiving on: : Sunday, December 4, 2016 - 1:45:58 AM
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