From still image to video-based face recognition: an experimental analysis

  • Authors:
  • A. Hadid;M. Pietikäinen

  • Affiliations:
  • Infotech Oulu and Department of Electrical and Information Engineering, University of Oulu, Finland;Infotech Oulu and Department of Electrical and Information Engineering, University of Oulu, Finland

  • Venue:
  • FGR' 04 Proceedings of the Sixth IEEE international conference on Automatic face and gesture recognition
  • Year:
  • 2004

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Abstract

In this work, we analyze the effects of face sequence length and image quality on the performance of videobased face recognition systems which use a spatio-temporal representation instead of a still image-based one. We experiment with two different databases and consider the temporal hidden Markov model as a baseline method for the spatiotemporal representation and PCA and LDA for the imagebased one. We show that the face sequence length affects the joint spatio-temporal representation more than the static-image-based methods. On the other hand, the experiments indicate that static image-based systems are more sensitive to image quality than their spatio-temporal representation-based counterpart. The second major contribution in this work is the use of an efficient method for extracting the representative frames (exemplars) from raw video. We build an appearance-based face recognition system which uses the probabilistic voting strategy to assess the efficiency of our approach.