Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/5622
Title: A statistical multiresolution approach for face recognition using structural hidden Markov models
Authors: Nicholl, P
Amira, A
Bouchaffra, D
Perrott, R H
Issue Date: 2008
Publisher: Hindawi Publishing Corporation
Citation: EURASIP Journal on Advances in Signal Processing 2008 (2008), 2008
Abstract: This paper introduces a novel methodology that combines the multiresolution feature of the discrete wavelet transform (DWT) with the local interactions of the facial structures expressed through the structural hidden Markov model (SHMM). A range of wavelet filters such as Haar, biorthogonal 9/7, and Coiflet, as well as Gabor, have been implemented in order to search for the best performance. SHMMs perform a thorough probabilistic analysis of any sequential pattern by revealing both its inner and outer structures simultaneously. Unlike traditional HMMs, the SHMMs do not perform the state conditional independence of the visible observation sequence assumption. This is achieved via the concept of local structures introduced by the SHMMs. Therefore, the long-range dependency problem inherent to traditional HMMs has been drastically reduced. SHMMs have not previously been applied to the problem of face identification. The results reported in this application have shown that SHMM outperforms the traditional hidden Markov model with a 73% increase in accuracy.
URI: http://bura.brunel.ac.uk/handle/2438/5622
DOI: 10.1155/2008/675787
ISSN: 1687-6172
Appears in Collections:Electronic and Computer Engineering
Dept of Electronic and Computer Engineering Research Papers

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