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    Chapter and Conference Paper

    Noise Reduction in Image Using Directional Modified Sigma Filter

    In this paper, we propose a new method using a modified sigma filter. The sigma filter among many algorithms is one of the simplest de-noising methods. The threshold of the sigma filter uses the estimated stan...

    Hye-Youn Lim, Mi-Ran Gu, Dae-Seong Kang in Future Information Technology (2011)