A master thesis from Aalborg University
Multi-Camera Person Tracking using Particle Filters based on Foreground Estimation and Feature Points
Author(s)
Term
4. term
Publication year
2010
Submitted on
2010-06-03
Abstract
Much research have in resent years been directed at sensing the presence and state of people and many possible applications exist. One application whose importance is continuously increasing with the average age of the western societies increases is assistive living environments for elderly. In this project a person tracking system for multi-camera environments is developed with this application in mind. Tracking is based on two different cues or modalities: Foreground and feature points. These compliment each other well since foreground is present whenever a person is moving, while feature points initialised on a person can be tracked indefinetly if he is stationary. Foreground is first found in 2D for each camera by estimating a background model using Gaussian Mixture Models. Then foreground from all cameras are combined yielding one single voxel-based 3D foreground. Feature points are initialised for each camera on persons and tracked individually in 2D using the KLT-tracker. Finally, layered sampling is applied to fuse information from foreground estimation and feature points into one particle filter for each present person. The system is implemented to run on one computer using video recordings, and a part of the system is implemented to run live distributed between multiple computers. Tests on the CLEAR 2007 data set prove that the combination of the two modalities provide better performance than a tracking system based solely on one of them.
Keywords
Documents
Colophon: This page is part of the AAU Student Projects portal, which is run by Aalborg University. Here, you can find and download publicly available bachelor's theses and master's projects from across the university dating from 2008 onwards. Student projects from before 2008 are available in printed form at Aalborg University Library.
If you have any questions about AAU Student Projects or the research registration, dissemination and analysis at Aalborg University, please feel free to contact the VBN team. You can also find more information in the AAU Student Projects FAQs.