An Illumination-Insensitive Face Matching Algorithm

  • Chyuan-Huei Thomas Yang 
  • Shang-Hong Lai 
  • Long-Wen Chang 
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2532)


Face matching is an essential step for face recognition and face verification. It is difficult to achieve robust face matching under various image acquisition conditions. In this paper, an illumination-insensitive face imagematching algorithm is proposed. This algorithm is based on an accumulated consistency measure of corresponding normalized gradients at face contour locations between two comparing face images under different lighting conditions. To solve the matching problem due to lighting changes between two face images, we first use a consistency measure, which is defined by the inner product between two normalized gradient vectors at the corresponding locations in the two images. Then we compute the sum of the individual consistency measures of the normalized gradients at all the contour pixels to be the robust matching measure between two face images. To better compensate for lighting variations, three face images with very different lighting directions for each person are used for robust face image matching. The Yale Face Database, which contains images acquired under three different lighting conditions for each person, are used to test the proposed algorithm. The experimental results show good recognition results under different lighting conditions by using the proposed illuminationinsensitive face matching algorithm.


Face Recognition Face Image Gesture Recognition Consistency Measure Face Recognition System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2002

Authors and Affiliations

  • Chyuan-Huei Thomas Yang 
    • 1
  • Shang-Hong Lai 
    • 1
  • Long-Wen Chang 
    • 1
  1. 1.Department of Computer ScienceNational Tsing-Hua UniversityHsingChuR.O.C

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