Face recognition by applying wavelet subband representation and kernel associative memory.
Identifieur interne : 001482 ( Main/Merge ); précédent : 001481; suivant : 001483Face recognition by applying wavelet subband representation and kernel associative memory.
Auteurs : Bai-Ling Zhang [Australie] ; Haihong Zhang ; Shuzhi Sam GeSource :
- IEEE transactions on neural networks / a publication of the IEEE Neural Networks Council [ 1045-9227 ] ; 2004.
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Abstract
In this paper, we propose an efficient face recognition scheme which has two features: 1) representation of face images by two-dimensional (2-D) wavelet subband coefficients and 2) recognition by a modular, personalised classification method based on kernel associative memory models. Compared to PCA projections and low resolution "thumb-nail" image representations, wavelet subband coefficients can efficiently capture substantial facial features while keeping computational complexity low. As there are usually very limited samples, we constructed an associative memory (AM) model for each person and proposed to improve the performance of AM models by kernel methods. Specifically, we first applied kernel transforms to each possible training pair of faces sample and then mapped the high-dimensional feature space back to input space. Our scheme using modular autoassociative memory for face recognition is inspired by the same motivation as using autoencoders for optical character recognition (OCR), for which the advantages has been proven. By associative memory, all the prototypical faces of one particular person are used to reconstruct themselves and the reconstruction error for a probe face image is used to decide if the probe face is from the corresponding person. We carried out extensive experiments on three standard face recognition datasets, the FERET data, the XM2VTS data, and the ORL data. Detailed comparisons with earlier published results are provided and our proposed scheme offers better recognition accuracy on all of the face datasets.
DOI: 10.1109/TNN.2003.820673
PubMed: 15387257
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