A comparison between space-time video descriptors

Luca Costantini; Licia Capodiferro; Alessandro Neri

doi:10.1117/12.2007575

19 February 2013 A comparison between space-time video descriptors

Luca Costantini, Licia Capodiferro, Alessandro Neri

Proceedings Volume 8655, Image Processing: Algorithms and Systems XI; 865513 (2013) https://doi.org/10.1117/12.2007575
Event: IS&T/SPIE Electronic Imaging, 2013, Burlingame, California, United States

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.

Citation Download Citation

Luca Costantini, Licia Capodiferro, and Alessandro Neri "A comparison between space-time video descriptors", Proc. SPIE 8655, Image Processing: Algorithms and Systems XI, 865513 (19 February 2013); https://doi.org/10.1117/12.2007575

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