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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Franco Gori
  • Vol. 31, Iss. 1 — Jan. 1, 2014
  • pp: 1–6

Self-training-based face recognition using semi-supervised linear discriminant analysis and affinity propagation

Haitao Gan, Nong Sang, and Rui Huang  »View Author Affiliations


JOSA A, Vol. 31, Issue 1, pp. 1-6 (2014)
http://dx.doi.org/10.1364/JOSAA.31.000001


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Abstract

Face recognition is one of the most important applications of machine learning and computer vision. The traditional supervised learning methods require a large amount of labeled face images to achieve good performance. In practice, however, labeled images are usually scarce while unlabeled ones may be abundant. In this paper, we introduce a semi-supervised face recognition method, in which semi-supervised linear discriminant analysis (SDA) and affinity propagation (AP) are integrated into a self-training framework. In particular, SDA is employed to compute the face subspace using both labeled and unlabeled images, and AP is used to identify the exemplars of different face classes in the subspace. The unlabeled data can then be classified according to the exemplars and the newly labeled data with the highest confidence are added to the labeled data, and the whole procedure iterates until convergence. A series of experiments on four face datasets are carried out to evaluate the performance of our algorithm. Experimental results illustrate that our algorithm outperforms the other unsupervised, semi-supervised, and supervised methods.

© 2013 Optical Society of America

OCIS Codes
(100.5010) Image processing : Pattern recognition
(150.2950) Machine vision : Illumination
(100.3008) Image processing : Image recognition, algorithms and filters

ToC Category:
Image Processing

History
Original Manuscript: June 4, 2013
Revised Manuscript: October 9, 2013
Manuscript Accepted: November 6, 2013
Published: December 2, 2013

Virtual Issues
Vol. 9, Iss. 3 Virtual Journal for Biomedical Optics

Citation
Haitao Gan, Nong Sang, and Rui Huang, "Self-training-based face recognition using semi-supervised linear discriminant analysis and affinity propagation," J. Opt. Soc. Am. A 31, 1-6 (2014)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-31-1-1

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