NDLI: A shape-template based two-stage corpus callosum segmentation technique for sagittal plane T1-weighted brain magnetic resonance images

Content Provider	IEEE Xplore Digital Library
Author	Mogali, J.K. Nallapareddy, N. Seelamantula, C.S. Unser, M.
Copyright Year	2013
Description	Author affiliation: Biomed. Imaging Group, Ecole Polytech. Fed. de Lausanne, Lausanne, Switzerland (Unser, M.) \|\| Dept. of Electr. Eng., Indian Inst. of Sci., Bangalore, India (Mogali, J.K.; Nallapareddy, N.; Seelamantula, C.S.)
Abstract	We propose a semi-automatic technique to segment corpus callosum (CC) using a two-stage snake formulation: A restricted affine transform (RAT) constrained snake followed by an unconstrained snake in an iterative fashion. A statistical model is developed to capture the shape variations of CC from a training set, which restrict the unconstrained snake to lie in the shape-space of CC. The geometry of the constrained snake is optimized using a local contrast-based energy over RAT space (which allows for five degrees of freedom). On the other hand, the unconstrained snake is optimized using a unified energy (region, gradient, and curvature energy) formulation. Joint optimization resulted in increased robustness to initialization as well as fast and accurate segmentation. The technique was validated on 243 images taken from the OASIS database and performance was quantified using Jaccard's distance, sensitivity, and specificity as the metrics.
Starting Page	1177
Ending Page	1181
File Size	793891
Page Count	5
File Format	PDF
ISBN	9781479923410
DOI	10.1109/ICIP.2013.6738243
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-15
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Shape Image segmentation Optimization Splines (mathematics) Training Magnetic resonance imaging Biomedical imaging contrast-based energy Corpus callosum segmentation active contour model shape-specific snake
Content Type	Text
Resource Type	Article

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