journal6 ›› 2007, Vol. 28 ›› Issue (2): 63-66.

• Physics and electronics • Previous Articles     Next Articles

Pre-Processing for Face Recognition Under Different Illumination Conditions


  1. (1.College of Physics Science & Information Engineering,Jishou University,Jishou 416000,Hunan China;2.Department of Equipment Command and Management,Academy of Armored Force Engineering,Beijing 100072,China;3.School ofComputer Science & Technology,Nanjing University of Science & Technology,Nanjing 210094,China)
  • Online:2007-03-25 Published:2012-06-18

Abstract: Face recognition under different illumination conditions is one of the challenging problems in pattern recognition field.In this paper,a pre-processing technique based on Region Regulation Model (RRM) is proposed.It divides a face image into four parts,and in each part a linear transformation point-by-point is conducted.The technique is feasible,simple and tractable in computing.Moreover,it is very effective to weaken the aftereffect of varying illumination.Comparing with the popular techniques,such as Histogram Equalization (HE) and Region-based Histogram Equalization (RHE),experiments are performed on Yale B face image database.The results illustrate that this pre-processing technique is available and efficient.

Key words: illumination variation, histogram equalization, region-based histogram equalization, image regulation, face recognition

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