Restauração de imagens de AFM com o funcional de regularização de Tikhonov visando a avaliação de superfícies metálicas

• Autor(a) principal: Santos, Alexander Corrêa dos
• Data de Publicação: 2008
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/13786
• topic: Image processing - digital techniques; Microscope and microscopy; Materials - image processing; Tikhonov, A.N. (Andrei Nikolaievitch); Image restoration; Atomic force microscopy; Tikhonov regularization; Processamento de imagens Técnicas digitais; Microscópio e microscopia; Materiais Processamento de imagens; Tikhonov, A.N. (Andrei Nikolaievitch); Restauração de imagens; Microscopia de força atômica; Regularização de Tikhonov; CNPQ::CIENCIAS EXATAS E DA TERRA::CIENCIA DA COMPUTACAO::MATEMATICA DA COMPUTACAO::MODELOS ANALITICOS E DE SIMULACAO

Problems during the process of acquisition of images of AFM have been doing with that research in the nanotechnology searchs the use of tools to minimize those degenerative effects. Computational tools for restoration of these degraded images have developed, in this work the method is used based on Regularization of Tikhonov. This method is usually used for restoration of biological images. It is proposed the use of this regularization functional also in images of interest in engineering. In some cases, a previously processing to the application of the algorithm, it presents good answer in the restoration of the images. The previously processing phase some were used filters as, average filter, median filter, laplacian filter and filter of punctual average, besides combination of filters. With the application of this regularizator it was possible to obtain profiles of distribution of the pixels where is shown that in the measure in that he increases the dissolution charge of iron in sulphuric acid, it is noticed that the aspect reason increases and surface characteristics are more visible.