Sanghoon Kim and Sun-Tae Chung and Souhwan Jung and Seongwon Cho, An Improved Illumination Normalization based on Anisotropic Smoothing for Face Recognition. journal = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology. January 2008, vol. 13(1). 1 - 7 [viewed 23 September 2024]. Available from: https://publications.waset.org/pdf/3973.