NDLI: Quantitative and qualitative measures for the evaluation of the superquadric models

Content Provider	IEEE Xplore Digital Library
Author	Gupta, A. Bogoni, L. Bajcsy, R.
Copyright Year	1989
Description	Author affiliation: Dept. of Comput. & Inf. Sci., Pennsylvania Univ., Philadelphia, PA, USA (Gupta, A.; Bogoni, L.; Bajcsy, R.)
Abstract	Evaluation criteria for superquadric models recovered from the range data discussed. Arguments are presented to support the authors' belief that both quantitative and qualitative measures are required in order to evaluate a superquadric fit. The concept of superquadric contraction and dilation is introduced and used to derive a novel interpretation of the modified superquadric inside-outside function in terms of contraction/expansion factor. The same concept also gives a close initial guess for the numerical procedure computing the minimum Euclidean distance of a point from a superquadric model. The minimum Euclidean distance map is introduced as a qualitative criterion for interpretation of fit. View-dependent qualitative measures like the contour-difference map and the Z-distance map are shown to be essential for the complete evaluation of the models. Analytical solution and techniques for the contour generator on superquadric models are presented. Finally, examples of real objects are given to generate the measures.<>
Starting Page	162
Ending Page	169
File Size	662125
Page Count	8
File Format	PDF
ISBN	0818620072
DOI	10.1109/TDSCEN.1989.68115
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1989-11-27
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Deformable models Vocabulary Information science Shape Machine vision Laboratories Layout Fitting NASA Euclidean distance
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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