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EventNet: A Large Scale Structured Concept Library for Complex Event Detection in Video

3 years 7 months ago
EventNet: A Large Scale Structured Concept Library for Complex Event Detection in Video
Event-specific concepts are the semantic concepts specifically designed for the events of interest, which can be used as a mid-level representation of complex events in videos. Existing methods only focus on defining event-specific concepts for a small number of pre-defined events, but cannot handle novel unseen events. This motivates us to build a large scale event-specific concept library that covers as many real-world events and their concepts as possible. Specifically, we choose WikiHow, an online forum containing a large number of how-to articles on human daily life events. We perform a coarse-to-fine event discovery process and discover 500 events from WikiHow articles. Then we use each event name as query to search YouTube and discover event-specific concepts from the tags of returned videos. After an automatic filter process, we end up with 95, 321 videos and 4, 490 concepts. We train a Convolutional Neural Network (CNN) model on the 95, 321 videos over the 500 event...
Guangnan Ye, Yitong Li, Hongliang Xu, Dong Liu, Sh
Added 14 Apr 2016
Updated 14 Apr 2016
Type Journal
Year 2015
Where MM
Authors Guangnan Ye, Yitong Li, Hongliang Xu, Dong Liu, Shih-Fu Chang
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