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Proceedings Paper

A comparison between space-time video descriptors
Author(s): Luca Costantini; Licia Capodiferro; Alessandro Neri
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Paper Abstract

The description of space-time patches is a fundamental task in many applications such as video retrieval or classification. Each space-time patch can be described by using a set of orthogonal functions that represent a subspace, for example a sphere or a cylinder, within the patch. In this work, our aim is to investigate the differences between the spherical descriptors and the cylindrical descriptors. In order to compute the descriptors, the 3D spherical and cylindrical Zernike polynomials are employed. This is important because both the functions are based on the same family of polynomials, and only the symmetry is different. Our experimental results show that the cylindrical descriptor outperforms the spherical descriptor. However, the performances of the two descriptors are similar.

Paper Details

Date Published: 19 February 2013
PDF: 7 pages
Proc. SPIE 8655, Image Processing: Algorithms and Systems XI, 865513 (19 February 2013); doi: 10.1117/12.2007575
Show Author Affiliations
Luca Costantini, Fondazione Ugo Bordoni (Italy)
Licia Capodiferro, Fondazione Ugo Bordoni (Italy)
Alessandro Neri, Univ. degli Studi di Roma Tre (Italy)

Published in SPIE Proceedings Vol. 8655:
Image Processing: Algorithms and Systems XI
Karen O. Egiazarian; Sos S. Agaian; Atanas P. Gotchev, Editor(s)

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