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Authors: Taha Faidi 1 ; Faten Chaieb 2 and Faouzi Ghorbel 2

Affiliations: 1 ENSI and Research and Studies Telecommunications Center (CERT), Tunisia ; 2 ENSI, Tunisia

ISBN: 978-989-758-225-7

Keyword(s): Shape Signature, Multiscale Representation, Affine Invariant, Triangle Circumscribed Ellipse.

Related Ontology Subjects/Areas/Topics: Computer Vision, Visualization and Computer Graphics ; Image and Video Analysis ; Shape Representation and Matching

Abstract: In this paper, we propose a new Multiscale Circum-ellipse Area Representation (MCAR) for planar contours. The proposed representation deals with a multiscale shape signature defined from the local area delimited by the circumscribed ellipse of the triangle formed by three contour points and the contour. This shape signature describes, at each scale level, the concavity/convexity at each contour point. Then, Fourier descriptors are obtained by applying Fourier transform to the proposed multiscale signature. Thus, the proposed MCAR based Fourier Descriptors handle the local and global shape characteristics. Furthermore, it is invariant to affine transformation and robust to local deformations. The performance of our proposed method was evaluated through the precision recall and bull’s-eye tests on the two well-known databases (MCD and MPEG7-setB). Obtained results indicate that our method outperforms the shape signatures based Fourier descriptor proposed in the literature

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Paper citation in several formats:
Faidi, T.; Chaieb, F. and Ghorbel, F. (2017). A Multiscale Circum-ellipse Area Representation for Planar Shape Retrieval.In Proceedings of the 12th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 4: VISAPP, (VISIGRAPP 2017) ISBN 978-989-758-225-7, pages 398-404. DOI: 10.5220/0006172803980404

@conference{visapp17,
author={Taha Faidi. and Faten Chaieb. and Faouzi Ghorbel.},
title={A Multiscale Circum-ellipse Area Representation for Planar Shape Retrieval},
booktitle={Proceedings of the 12th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 4: VISAPP, (VISIGRAPP 2017)},
year={2017},
pages={398-404},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006172803980404},
isbn={978-989-758-225-7},
}

TY - CONF

JO - Proceedings of the 12th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 4: VISAPP, (VISIGRAPP 2017)
TI - A Multiscale Circum-ellipse Area Representation for Planar Shape Retrieval
SN - 978-989-758-225-7
AU - Faidi, T.
AU - Chaieb, F.
AU - Ghorbel, F.
PY - 2017
SP - 398
EP - 404
DO - 10.5220/0006172803980404

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