NDLI: Shape evolution for rigid and nonrigid shape registration and recovery

Content Provider	IEEE Xplore Digital Library
Author	Junyan Wang Kap Luk Chan
Copyright Year	2009
Description	Author affiliation: Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore (Junyan Wang; Kap Luk Chan)
Abstract	This paper addresses the problem of rigid and nonrigid shape registration and recovery in the presence of shape deformation, missing parts and/or overlapping of multiple shapes. A novel shape evolution approach based on truncated warping transformation formulated in an Energy-Minimization-Curve-Evolution framework is proposed to solve this problem. We deterministically model the rigid and nonrigid shape deformation/registration as curve evolution by a warping function mapping. We also derive the curve evolution equation of warping to minimize functional energies. Hence, by selecting a prior shape as the initial curve for the curve evolution, the shape evolution for registration is within the shape space generated by the warping transformation of the prior shape. Based on the Fourier shape contour spectrum, local shape contour distortions that result in significant visual impact is considered to be largely contained in the changes of the high frequency components. Thus, the smoothing of the warping function by truncation is performed to recover the true shape. We adopted the Chan-Vese model and a truncated warping function to obtain our algorithm for shape registration and recovery. Experiments validated our model and algorithm quantitatively.
Starting Page	164
Ending Page	171
File Size	1274399
Page Count	8
File Format	PDF
ISBN	9781424439928
ISSN	10636919
DOI	10.1109/CVPR.2009.5206854
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Shape Horses Equations Deformable models Frequency Prototypes Object segmentation Power engineering and energy Smoothing methods Active contours
Content Type	Text
Resource Type	Article
Subject	Computer Vision and Pattern Recognition Software

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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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