4 April 1997 Adaptive region-based filtering of multiplicative noise
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A new adaptive-neighborhood restoration filter to restore images degraded by multiplicative noise is proposed. The filter uses statistics computed over adaptive-neighborhoods which are grown to include statistically stationary regions. Results of application to synthetic and natural images degraded by multiplicative noise show that the proposed method provides better noise removal than a related 3 by 3 neighborhood method without blurring edges.
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Arup Das, Rangaraj M. Rangayyan, "Adaptive region-based filtering of multiplicative noise", Proc. SPIE 3026, Nonlinear Image Processing VIII, (4 April 1997); doi: 10.1117/12.271138; https://doi.org/10.1117/12.271138

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