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Novel Spectral Descriptor for Object Shape

  • Atul Sajjanhar
  • Guojun Lu
  • Dengsheng Zhang
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6297)

Abstract

In this paper, we propose a novel descriptor for shapes. The proposed descriptor is obtained from 3D spherical harmonics. The inadequacy of 2D spherical harmonics is addressed and the method to obtain 3D spherical harmonics is described. 3D spherical harmonics requires construction of a 3D model which implicitly represents rich features of objects. Spherical harmonics are used to obtain descriptors from the 3D models. The performance of the proposed method is compared against the CSS approach which is the MPEG-7 descriptor for shape contour. MPEG-7 dataset of shape contours, namely, CE-1 is used to perform the experiments. It is shown that the proposed method is effective.

Keywords

shape descriptor content based image retrieval feature extraction 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Atul Sajjanhar
    • 1
  • Guojun Lu
    • 2
  • Dengsheng Zhang
    • 2
  1. 1.School of Information TechnologyDeakin UniversityBurwoodAustralia
  2. 2.Gippsland School of Information TechnologyMonash UniversityChurchillAustralia

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