Barcelos, CAZBoaventura, M.Silva, E. C.2014-05-202014-05-202003-07-01IEEE Transactions on Image Processing. Piscataway: IEEE-Inst Electrical Electronics Engineers Inc., v. 12, n. 7, p. 751-763, 2003.1057-7149http://hdl.handle.net/11449/39215In this paper, an anisotropic nonlinear diffusion equation for image restoration is presented. The model has two terms: the diffusion and the forcing term. The balance between these terms is made in a selective way, in which boundary points and interior points of the objects that make up the image are treated differently. The optimal smoothing time concept, which allows for finding the ideal stop time for the evolution of the partial differential equation is also proposed. Numerical results show the proposed model's high performance.751-763engdiffusion equationedge detectionImage processingnoise removalArtigo10.1109/TIP.2003.814242WOS:000184206100003Acesso restrito6958497786939585