Contour Tracking of Targets with Large Aspect Change

In this paper we present a novel method for tracking contour of a moving rigid object in natural video sequences from a mobile camera. While a mobile camera is keeping track of a moving target, any change in relative orientation or position of the target and camera may cause a change in the view of target captured by the camera. This is called the target aspect change and known as a challenge in tracking. Especially, a large aspect change may reveal some previously hidden parts of the target, and this is the case we have handled in our algorithm. In proposed contour tracking method the motion model of the target is estimated using corner matching and LMedS statistical method. This model is used together with an active contour (snake) to track the target efficiently. The snake we propose is capable of swelling locally, so that it can swell and include newly appeared parts of the target in case of a large aspect change. Detecting target newly appeared parts, is based on the fact that a p...

• Type: Journal
• Year: 2007
• Where: JMM2
• Authors: Behzad Jamasbi, Seyed Ahmad Motamedi, Alireza Behrad
• Keywords: Aspect Change, JMM2 2007, Large Aspect Change, Mobile Camera