Virtual illumination grid for correction of uncontrolled illumination in facial images

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Boom, B.J. and Spreeuwers, L.J. and Veldhuis, R.N.J. (2010) Virtual illumination grid for correction of uncontrolled illumination in facial images. Pattern Recognition . ISSN 0031-3203

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Abstract:Face recognition under uncontrolled illumination conditions is still considered an unsolved problem. In order to correct for these illumination conditions, we propose a virtual illumination grid (VIG) approach to model the unknown illumination conditions. Furthermore, we use coupled subspace models of both the facial surface and albedo to estimate the face shape. In order to obtain a representation of the face under frontal illumination, we relight the estimated face shape. We show that the frontal illuminated facial images achieve better performance in face recognition. We have performed the challenging Experiment 4 of the FRGCv2 database, which compares uncontrolled probe images to controlled gallery images. Our illumination correction method results in considerably better recognition rates for a number of well-known face recognition methods. By fusing our global illumination correction method with a local illumination correction method, further improvements are achieved.

Item Type:Article
Copyright:© 2010 Elsevier
Faculty:
Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:
Link to this item:http://purl.utwente.nl/publications/76042
Official URL:http://dx.doi.org/10.1016/j.patcog.2010.07.022
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