1st IEEE Workshop on Performance Evaluation of Tracking and Surveillance (PETS2000)

From Connected Components to Object Sequences

James Orwell, Paolo Remagnino and Graeme Jones

Computer Vision Group, CS&ES, Kingston University, UK.

We assume the target representation of the tracking operation to be a segmentation into separate physical entities, over space and time. A background model is used to isolate the foreground pixels, to be grouped into spatially connected regions. Splitting and merging of these regions may be necessary to establish a correspondence with the observed objects; they must also be tracked over the sequence. We show how a hierarchical ordering of regions allows a simple resolution of some possible ambiguities. We then suggest that the target representation must be synchronized with discrete updates of the background model, for effective tracking in surveillance applications.

Last Modified 3 March 2000 18:46