Article (Scientific journals)
Boosting shape classifiers accuracy by considering the inverse shape
Pierard, Sébastien; Lejeune, Antoine; Van Droogenbroeck, Marc
2016In Journal of Pattern Recognition Research, 11 (1), p. 41-54
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Keywords :
Shape descriptor; Object classification; Inverse shape; Cover by rectangles; Zernike moments
Abstract :
[en] Many techniques exist for describing shapes. These techniques almost exclusively consider the contour or the inside of the shape; the major problem for describing the outside of a shape, or inverse shape, being that it has an infinite extension. In this paper, we show how to adapt two shape descriptors, one region based, the Cover By Rectangles, and one transform based, the Zernike moments, to be applicable to the inverse shape. We analyze their properties, and show how to deal with the infinite extension of the inverse shape. Then, we apply these descriptors to shape classification and compare representations that use the shape, its inverse, or both. Our experiments establish that, for shape classification, a representation integrating the inverse shape often outperforms a representation restricted to the shape. This opens the path for better techniques that could use, as a rule of thumb, both the representations of a shape and its inverse for the purpose of classification.
Research center :
Montefiore; Telim
Disciplines :
Electrical & electronics engineering
Author, co-author :
Pierard, Sébastien ;  Université de Liège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Télécommunications
Lejeune, Antoine ;  Université de Liège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Exploitation des signaux et images
Van Droogenbroeck, Marc  ;  Université de Liège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Télécommunications
Language :
English
Title :
Boosting shape classifiers accuracy by considering the inverse shape
Publication date :
July 2016
Journal title :
Journal of Pattern Recognition Research
ISSN :
1558-884X
Publisher :
A Urmanov, San Diego, United States - California
Volume :
11
Issue :
1
Pages :
41-54
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 20 June 2016

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