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Illumination Invariant Face Recognition Using Fuzzy LDA and FFNN

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Author(s): Farzad Noorian | Hamed Azami | Behzad Bozorgtabar

Journal: Advances in Molecular Imaging
ISSN 2161-6728

Volume: 03;
Issue: 01;
Start page: 45;
Date: 2012;
Original page

Keywords: Face Recognition | Histogram Truncation | Homomorphic Filter | Fuzzy LDA | FFNN

ABSTRACT
The most significant practical challenge for face recognition is perhaps variability in lighting intensity. In this paper, we developed a face recognition which is insensitive to large variation in illumination. Normalization step including two steps, first we used Histogram truncation as a pre-processing step and then we implemented Homomorphic filter. The main idea is that, achieving illumination invariance causes to simplify feature extraction module and increases recognition rate. Then we utilized Fuzzy Linear Discriminant Analysis (FLDA) in feature extraction stage which showed a good discriminating ability compared to other methods while classification is performed using Feedforward Neural Network (FFNN). The experiments were performed on the ORL (Olivetti Research Laboratory) face image database and the results show the present method outweighs other techniques applied on the same database and reported in literature.
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