TemporalBoost for Event Recognition

This paper contributes a new boosting paradigm to achieve detection of events in video. Previous boosting paradigms in vision focus on single frame detection and do not scale to video events. Thus new concepts need to be introduced to address questions such as determining if an event has occurred, localizing the event, handling same action performed at different speeds, incorporating previous classifier responses into current decision, using temporal consistency of data to aid detection and recognition. The proposed method has the capability to improve weak classifiers by allowing them to use previous history in evaluating the current frame. A learning mechanism built into the boosting paradigm is also given which allows event level decisions to be made. This is contrasted with previous work in boosting which uses limited higher level temporal reasoning and essentially makes object detection decisions at the frame level. Our approach makes extensive use of temporal continuity of vid...

• Type: Conference
• Year: 2005
• Where: ICCV
• Authors: Paul Smith, Niels da Vitoria Lobo, Mubarak Shah
• Keywords: Boosting Paradigm, Computer Vision, Detection, ICCV 2005, Single Frame Detection