An Integrated Face Rec gniti n System Based n Multiscale L cal Discriminatory Features |
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Authors: | Baoming Hong Songmei Tang |
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Affiliation: | (1) Department of Electrical & Computer Engineering,;(2) Department of Computer Science, University of Massachusetts Dartmouth, North Dartmouth, MA, USA, US |
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Abstract: | Despite some successes, the process of Automatic Facial Recognition (AFR) remains a significant challenge when unconstrained
imaging conditions are involved. The authors believe that this occurs because an effective feature extraction method of facial
images has not been found so far. In this paper a new approach to extract powerful local discriminatory features is described.
First, the wavelet transform is used for extraction of multi-resolution coarse features, and then the emphasis is placed on
the extraction of Multiscale fine Local Discriminatory Features (MLDFs). Instead of using traditional wavelet features, the
authors examine the multiscale local statistical characteristics to derive stronger discriminatory features based on some
important wavelet subbands. To efficiently utilise potentials of the extracted multi-MLDFs, an integrated recognition system
is developed where the multi-classifiers first conduct the corresponding coarse classification, then a decision making scheme
is used to associate different priorities with each of the classifiers to make the final recognition. Experiments have shown
that this scheme provides superior performance to popular methods, such as Principal Components Analysis (PCA or Eigenface),
wavelet features, neural networks, etc. |
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Keywords: | :Face recognition Feature extraction Pattern classification Wavelet transform |
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