A Comparative Study of Curvature Scale Space and Fourier Descriptors

Dengsheng Zhang and Guojun Lu
Gippsland School of Computing and Information Technology
Monash University
Churchill, Victoria 3842
Australia

Tel: 61-3-9902 6772
Fax: 61-3-9902 6842
Email: dengsheng.zhang, guojun.lu@infotech.monash.edu.au

ABSTRACT

In MPEG-7, curvature scale space descriptors (CSSD) has been proposed as contour-based shape descriptors. However, no analytic and experimental comparison with other contour-based shape descriptors have been reported in the literature. In this paper we study and compare Fourier descriptors (FD) and CSSD. Our experimental results show that FD outperforms CSSD in terms of robustness, low computation, hierarchical representation, retrieval performance and suitability for efficient indexing.

Key words: Fourier descriptors, curvature scale space, CBIR, shape.