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Stabilization of Parametric Active Contours Using a Tangential Redistribution Term

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Title Stabilization of Parametric Active Contours Using a Tangential Redistribution Term
 
Creator SRIKRISHNAN, V
CHAUDHURI, S
 
Subject topology-adaptive snakes
image segmentation
shape
strategies
gradients
tracking
models
image segmentation
parametric active contours
stable contour evolution
tangential redistribution of curve points
 
Description Depending on implementation, active contours have been classified as geometric or parametric active contours. Parametric contours, irrespective of representation, are known to suffer from the problem of irregular bunching and spacing out of curve points during the curve evolution. In a spline-based implementation of active contours, this leads to occasional formation of loops locally, and subsequently the curve blows up due to instabilities. In this paper, we analyze the reason for this problem and propose a solution to alleviate the same. We propose an ordinary differential equation (ODE) for controlling the curve parametrization during evolution by including a tangential force. We show that the solution of the proposed ODE is bounded. We demonstrate the effectiveness of the proposed method for segmentation and tracking tasks on closed as well as open contours.
 
Publisher IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
 
Date 2011-08-01T16:36:07Z
2011-12-26T12:53:26Z
2011-12-27T05:38:55Z
2011-08-01T16:36:07Z
2011-12-26T12:53:26Z
2011-12-27T05:38:55Z
2009
 
Type Article
 
Identifier IEEE TRANSACTIONS ON IMAGE PROCESSING, 18(8), 1859-1872
1057-7149
http://dx.doi.org/10.1109/TIP.2009.2021310
http://dspace.library.iitb.ac.in/xmlui/handle/10054/8487
http://hdl.handle.net/10054/8487
 
Language en