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Spatio-temporal SIFT and Its Application to Human Action Classification

  • Manal Al Ghamdi
  • Lei Zhang
  • Yoshihiko Gotoh
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7583)

Abstract

This paper presents a space-time extension of scale-invariant feature transform (SIFT) originally applied to the 2-dimensional (2D) volumetric images. Most of the previous extensions dealt with 3-dimensional (3D) spacial information using a combination of a 2D detector and a 3D descriptor for applications such as medical image analysis. In this work we build a spatio-temporal difference-of-Gaussian (DoG) pyramid to detect the local extrema, aiming at processing video streams. Interest points are extracted not only from the spatial plane (xy) but also from the planes along the time axis (xt and yt). The space-time extension was evaluated using the human action classification task. Experiments with the KTH and the UCF sports datasets show that the approach was able to produce results comparable to the state-of-the-arts.

Keywords

Action Recognition Interest Point Scale Invariant Feature Transform Human Action Recognition Gaussian Pyramid 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Manal Al Ghamdi
    • 1
  • Lei Zhang
    • 2
  • Yoshihiko Gotoh
    • 1
  1. 1.University of SheffieldUK
  2. 2.Harbin Engineering UniversityPRC

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