V. I. Tsurkov Journal of Computer and System Sciences Intrnational , Vol.39 No.3 , 01.2000 , p. 437-440, language: английский ISSN 1064-2307  Аннотация A model is constructed for edge protection under the noise elimination in images by nonlinear diffusion. The edges are represented as Holder-type singular functions.  Ключевые слова image processing, nonlinear diffusion, Perona-Malik problem