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Background learning for robust face recognition with PCA in the presence of clutter

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3 Author(s)
Rajagopalan, A.N. ; Dept. of Electr. Eng., Indian Inst. of Technol., Chennai, India ; Chellappa, R. ; Koterba, N.T.

We propose a new method within the framework of principal component analysis (PCA) to robustly recognize faces in the presence of clutter. The traditional eigenface recognition (EFR) method, which is based on PCA, works quite well when the input test patterns are faces. However, when confronted with the more general task of recognizing faces appearing against a background, the performance of the EFR method can be quite poor. It may miss faces completely or may wrongly associate many of the background image patterns to faces in the training set. In order to improve performance in the presence of background, we argue in favor of learning the distribution of background patterns and show how this can be done for a given test image. An eigenbackground space is constructed corresponding to the given test image and this space in conjunction with the eigenface space is used to impart robustness. A suitable classifier is derived to distinguish nonface patterns from faces. When tested on images depicting face recognition in real situations against cluttered background, the performance of the proposed method is quite good with fewer false alarms.

Published in:

Image Processing, IEEE Transactions on  (Volume:14 ,  Issue: 6 )

Date of Publication:

June 2005

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