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Title: Progressive switching median filter for the removal of impulse noise from highly corrupted images
Authors: Wang, Z
Zhang, DD 
Issue Date: Jan-1999
Source: IEEE transactions on circuits and systems. II, Analog and digital signal processing, Jan. 1999, v. 46, no. 1, p. 78-80
Abstract: A new median-based filter, progressive switching median (PSM) filter, is proposed to restore images corrupted by salt-pepper impulse noise. The algorithm is developed by the following two main points: 1) switching scheme—an impulse detection algorithm is used before filtering, thus only a proportion of all the pixels will be filtered and 2) progressive methods—both the impulse detection and the noise filtering procedures are progressively applied through several iterations. Simulation results demonstrate that the proposed algorithm is better than traditional median-based filters and is particularly effective for the cases where the images are very highly corrupted.
Keywords: Image enhancement
Impulse detection
Median filter
Nonlinear filter
Publisher: Institute of Electrical and Electronics Engineers
Journal: IEEE transactions on circuits and systems. II, Analog and digital signal processing 
ISSN: 1057-7130
DOI: 10.1109/82.749102
Rights: © 1999 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
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