Abstract
In this paper, by supposing a parametric Gaussian distribution over the image space (spanned by the row vectors of 2D image matrices) and a spherical Gaussian noise model for the image, we endow the two-dimensional principal component analysis (2DPCA) with a probabilistic framework called probabilistic 2DPCA (P2DPCA), which is robust to noise. Further, by using the probabilistic perspective of P2DPCA, we extend P2DPCA to a mixture of local P2DPCA models (MP2DPCA). MP2DPCA offers us a method of being able to model faces in unconstrained (complex) environment with possibly large variation. The model parameters could be fitted on the basis of maximum likelihood (ML) estimation via the expectation maximization (EM) algorithm. The experimental recognition results on UMIST face database confirm the effectivity of the proposed methods.
This work was partly funded by National Natural Science Foundation of China (Grant No. 10571001, 60503023, and 60375010), and partly by Jiangsu Natural Science Foundation (Grant No. BK2005407) and Program for New Century Excellent Talents in University (Grant No. NCET-05-0467).
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Wang, H., Hu, Z. (2006). Face Recognition Using Probabilistic Two-Dimensional Principal Component Analysis and Its Mixture Model. In: Jiao, L., Wang, L., Gao, Xb., Liu, J., Wu, F. (eds) Advances in Natural Computation. ICNC 2006. Lecture Notes in Computer Science, vol 4221. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11881070_48
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DOI: https://doi.org/10.1007/11881070_48
Publisher Name: Springer, Berlin, Heidelberg
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