作者: Kimiaki Shirahama , Marcin Grzegorzek , Kuniaki Uehara
关键词: Intermediate layer 、 Computer science 、 Event structure 、 TRECVID 、 Machine learning 、 Classifier (UML) 、 Artificial intelligence 、 Multimedia 、 Conditional random field
摘要: This paper introduces a method for Multimedia Event Detection (MED). Given training videos certain event, classifier is constructed to identify displaying it. In particular, the problems of weakly supervised setting and unclear event structure are addressed in this paper. The first issue associated with loosely annotated that usually contain many irrelevant shots. second one difficulty assuming advance, because can be created by arbitrary camera editing techniques. To overcome these problems, Hidden Conditional Random Field (HCRF) used where hidden states work as an intermediate layer discriminate between relevant shots event. addition, relation among characterises structure. Thus, above managed optimising their relation, so distinguish occurs from rest videos. Experimental results on TRECVID video data validate effectiveness HCRFs context.