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Nonlinear Edge Preserving Filtering Techniques for Image Enhancement.
PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF ELECTRICAL ENGINEERING
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Recently introduced generalizations of the median filter namely the alpha-trimmed mean and modified trimmed mean filters are reviewed and related to a class of nonlinear filters called selective averaging filters, and two new filters are defined. These filters are examined for performance on noise-corrupted images and shown to have good smoothing characteristics without edge smearing.
APPROVED FOR PUBLIC RELEASE