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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

[en] METHODS FOR THE ACCELERATION OF NON-LOCAL MEANS NOISE REDUCTION ALGORITHM / [pt] MÉTODOS PARA ACELERAÇÃO DO NON-LOCAL MEANS ALGORITMO DE REDUÇÃO DE RUÍDO

NOAM SHAHAM 15 February 2008 (has links)
[pt] Non-local means é um novo algoritmo de redução de ruídos para imagens apresentado por Buades e Morel em 2004. Este algoritmo funciona consideravelmente melhor do que os algoritmos anteriores, mas sua lenta execução causada pela alta complexidade o impede de ser usado em aplicações comuns. O objetivo deste trabalho é investigar maneiras de reduzir o tempo de execução do algoritmo, possibilitando seu uso em aplicações comuns de processamento de imagem, tal como fotografia e centros de impressão. / [en] Non Local Means is an innovative noise reduction algorithm for images presented by Buades and Morel in 2004. It performs remarkably better than older generation algorithms but has a performance penalty that prevents it from being used in mainstream consumer application. The objective of this work is to find ways of reducing the time-complexity of the algorithm and enabling its use in main stream image processing applications such as home photography or photo printing centers.

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