NDLI: Tracking with simultaneous camera motion subtraction by level set spatio-temporal surface evolution

Content Provider	IEEE Xplore Digital Library
Author	Feghali, R. Mitiche, A.
Copyright Year	2003
Description	Author affiliation: Commun. Res. Centre, Ottawa, Ont., Canada (Feghali, R.)
Abstract	The purpose of this study is to investigate a method of tracking moving objects with a moving camera. This method interprets tracking as detection of the surface generated by motion boundaries in the spatio-temporal domain and estimates simultaneously the motion induced by camera movement. The problem is formulated as a Bayesian motion-based partitioning problem in the spatio-temporal domain of the image sequence. An energy functional is derived from the Bayesian formulation. The Euler Lagrange descent equations determine simultaneously an estimate of the image motion field induced by camera motion and an estimate of the spatio-temporal motion boundary surface. The Euler-Lagrange equation corresponding to the surface is expressed as a level set partial differential equation for topology independence and numerically stable implementation. The method has a simple initialization and allows the tracking of multiple objects with non simultaneous motions. Optical velocities on motion boundaries is estimated from geometrical properties of the motion boundary surface. Several examples of experimental verification are given using synthetic and real image sequences.
Sponsorship	IEEE Signal Process. Soc
File Size	389462
File Format	PDF
ISBN	0780377508
ISSN	15224880
DOI	10.1109/ICIP.2003.1247398
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-09-14
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Tracking Cameras Level set Motion estimation Bayesian methods Image sequences Partial differential equations Motion detection Lagrangian functions Differential equations
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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