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学术报告——“Large-Scale Online Near Duplicate Video Detection”

点击量:959  时间:2016-06-27 10:26:17  来源:本站   作者:管理员

题目:Large-Scale Online Near Duplicate Video Detection

报告人:Wenbo He  (Associate Professor,  Mcmaster University)

报告时间:2016年6月30日上午9:00

报告地点:研究生院 研3-311


报告内容:Nowadays, billions of videos are hosted and shared in the cloud and there exist a nontrivial portion of the near-duplicate video copies. An efficient and accurate content-based online near-duplicate video detection (NDVD) for large scale data set is a fundamental research which will benefit applications such as duplication-aware storage, pirate video detection, polluted video tag detection, and searching result diversification, etc. In this talk, I will report our progress on NDVD, and the talk contains three parts: (1) I will introduce a system called CompoundEyes, which shifts the focus from feature design or algorithm design to system design, so that both efficiency and accuracy can be achieved for NDVD. (2) I will show the streaming data processing pipeline, called Marlin, to handle online feature extraction for large scale NDVD, and achieve a fine-grained resource allocation among the videos with various resource demands. (3) I will present a practical and highly efficient locality sensitive hashing (LSH) system to provide the large scale indexing structure for streaming data, and deal with concurrent query/update requests.



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网络空间安全研究院

2016年6月27日