Perfect histogram matching PCA for face recognition

  • Authors:
  • Ana-Maria Sevcenco;Wu-Sheng Lu

  • Affiliations:
  • Department of Electrical and Computer Engineering, University of Victoria, Victoria, Canada V8P 5C2;Department of Electrical and Computer Engineering, University of Victoria, Victoria, Canada V8P 5C2

  • Venue:
  • Multidimensional Systems and Signal Processing
  • Year:
  • 2010

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Abstract

We present an enhanced principal component analysis (PCA) algorithm for improving rate of face recognition. The proposed pre-processing method, termed as perfect histogram matching, modifies the image histogram to match a Gaussian shaped tonal distribution in the face images such that spatially the entire set of face images presents similar facial gray-level intensities while the face content in the frequency domain remains mostly unaltered. Computationally inexpensive, the perfect histogram matching algorithm proves to yield superior results when applied as a pre-processing module prior to the conventional PCA algorithm for face recognition. Experimental results are presented to demonstrate effectiveness of the technique.