Quaero at TRECVID 2011: Semantic Indexing and Multimedi Event Detection (draft)
Bahjat Safadi, Nadia Derbas, Abdelkader Hamadi, Franck Thollard, Georges Qu, Tobias Gehrig, Hazım Kemal Ekenel, Rainer Stifelhagen · 2011
The Quaero group is a consortium of French and German organizations working on Multimedia Indexing and Retrieval 1 . LIG and KIT participated to the semantic indexing task and LIG participated to the organization of this task. LIG also participated to the multimedia event detection task. This paper describes these participations. For the semantic indexing task, our approach uses a sixstages processing pipelines for computing scores for the likelihood of a video shot to contain a target concept. These scores are then used for producing a ranked list of images or shots that are the most likely to contain the target concept. The pipeline is composed of the following steps: descriptor extraction, descriptor optimization, classication, fusion of descriptor variants,