NDLI: Accurate principal directions estimation in discrete surfaces

Content Provider	IEEE Xplore Digital Library
Author	Agam, G. Xiaojing Tang
Copyright Year	2005
Description	Author affiliation: Dept. of Comput. Sci., Illinois Inst. of Technol., Chicago, IL, USA (Agam, G.; Xiaojing Tang)
Abstract	Accurate local surface geometry estimation in discrete surfaces is an important problem with numerous applications. Principal curvatures and principal directions can be used in applications such as shape analysis and recognition, object segmentation, adaptive smoothing, anisotropic fairing of irregular meshes, and anisotropic texture mapping. In this paper, a novel approach for accurate principal direction estimation in discrete surfaces is described. The proposed approach is based on local directional curve sampling of the surface where the sampling frequency can be controlled. This local model has a large number of degrees of freedoms compared with known techniques and so can better represent the local geometry. The proposed approach is quantitatively evaluated and compared with known techniques for principal direction estimation. In order to perform an unbiased evaluation in which smoothing effects are factored out, we use a set of randomly generated Bezier surface patches for which the principal directions can be computed analytically.
Starting Page	293
Ending Page	300
File Size	360155
Page Count	8
File Format	PDF
ISBN	0769523277
ISSN	15506185
DOI	10.1109/3DIM.2005.14
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-13
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Geometry Smoothing methods Anisotropic magnetoresistance Sampling methods Shape Object segmentation Frequency Solid modeling Performance evaluation Performance analysis
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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