Fast detection and removal of impulsive noise using peer groups and fuzzy metrics

被引:67
作者
Camarena, Joan-Gerard [1 ]
Gregori, Valentin [1 ]
Morillas, Samuel [1 ]
Sapena, Almanzor [1 ]
机构
[1] Univ Politecn Valencia, EPS Gandia, Valencia 46730, Spain
关键词
color image filter; fuzzy metric; non-linear vector filter; peer group; vector median filter;
D O I
10.1016/j.jvcir.2007.04.003
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
A novel approach to impulsive noise detection in color images is introduced. In the paper, the peer group concept is redefined by means of a certain fuzzy metric. This concept is employed for the fast detection of noisy pixels by taking advantage of the fuzzy metric properties. On the basis of the noisy pixel detection a switching filter between the arithmetic mean filter (AMF) and the identity operation is proposed. The proposed switching filter achieves a trade-off between noise suppression and signal-detail preservation and is faster than recently introduced switching filters based on the peer group concept. (C) 2007 Elsevier Inc. All rights reserved.
引用
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页码:20 / 29
页数:10
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