Title:
Dynamic Level Sets for Visual Tracking

dc.contributor.advisor Tannenbaum, Allen R.
dc.contributor.author Niethammer, Marc en_US
dc.contributor.committeeMember Egerstedt, Magnus
dc.contributor.committeeMember Jacobs, Laurence J.
dc.contributor.committeeMember Scott, Waymond
dc.contributor.committeeMember Yezzi, Anthony
dc.contributor.department Electrical and Computer Engineering en_US
dc.date.accessioned 2006-01-18T22:28:37Z
dc.date.available 2006-01-18T22:28:37Z
dc.date.issued 2004-11-19 en_US
dc.description.abstract This thesis introduces geometric dynamic active contours in the context of visual tracking, augmenting geometric curve evolution with physically motivated dynamics. Adding additional state information to an evolving curve lifts the curve evolution problem to space dimensions larger than two and thus forbids the use of classical level set techniques. This thesis therefore develops and explores level set methods for problems of higher codimension, putting an emphasis on the vector distance function based approach. This formalism is very general, it is interesting in its own right and still a challenging topic. Two different implementations for geometric dynamic active contours are explored: the full level set approach as well as a simpler partial level set approach. The full level set approach results in full topological flexibility and can deal with curve intersections in the image plane. However, it is computationally expensive. On the other hand the partial level set approach gives up the topological flexibility (intersecting curves cannot be represented) for increased computational efficiency. Contours colliding with different dynamic information (e.g., objects crossing in the image plane) will be merged in the partial level set approach whereas they will correctly traverse each other in the full level set approach. Both implementations are illustrated on synthetic and real examples. Compared to the traditional static curve evolution case, fundamentally different evolution behaviors can be obtained by propagating additional information along with every point on a curve. en_US
dc.description.degree Ph.D. en_US
dc.format.extent 3336617 bytes
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/7606
dc.language.iso en_US
dc.publisher Georgia Institute of Technology en_US
dc.subject Dynamic active contours en_US
dc.subject Level set methods for higher codimensions
dc.subject Geometric curve evolution theory
dc.title Dynamic Level Sets for Visual Tracking en_US
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.corporatename School of Electrical and Computer Engineering
local.contributor.corporatename College of Engineering
relation.isOrgUnitOfPublication 5b7adef2-447c-4270-b9fc-846bd76f80f2
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
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