Facial Recognition Using Multisensor Images Based on Localized Kernel Eigen Spaces
Gundimada, S.
Asari, V.K.
Symetix, Walla Walla, WA;
This paper appears in: Image Processing, IEEE Transactions on
Publication Date: June 2009
Volume: 18,
Issue: 6
On page(s): 1314-1325
ISSN: 1057-7149
INSPEC Accession Number: 10647812
Digital Object Identifier: 10.1109/TIP.2009.2016713
First Published: 2009-04-10
Current Version Published: 2009-05-12
Abstract
A feature selection technique along with an information fusion procedure for improving the recognition accuracy of a visual and thermal image-based facial recognition system is presented in this paper. A novel modular kernel eigenspaces approach is developed and implemented on the phase congruency feature maps extracted from the visual and thermal images individually. Smaller sub-regions from a predefined neighborhood within the phase congruency images of the training samples are merged to obtain a large set of features. These features are then projected into higher dimensional spaces using kernel methods. The proposed localized nonlinear feature selection procedure helps to overcome the bottlenecks of illumination variations, partial occlusions, expression variations and variations due to temperature changes that affect the visual and thermal face recognition techniques. AR and Equinox databases are used for experimentation and evaluation of the proposed technique. The proposed feature selection procedure has greatly improved the recognition accuracy for both the visual and thermal images when compared to conventional techniques. Also, a decision level fusion methodology is presented which along with the feature selection procedure has outperformed various other face recognition techniques in terms of recognition accuracy.
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