Space variant median filters for the restoration of impulse noise corrupted images

Author

Chen, Tao ; Wu, Hong Ren

Author_Institution

Sch. of Comput. Sci. & Software Eng., Monash Univ., Clayton, Vic., Australia

Volume

48

Issue

8

fYear

2001

fDate

8/1/2001 12:00:00 AM

Firstpage

784

Lastpage

789

Abstract

This brief proposes a generalized framework of median based switching schemes, called multi-state median (MSM) filter. By using a simple thresholding logic, the output of the MSM filter is adaptively switched among those of a group of center weighted median (CWM) filters that have different center weights. As a result, the MSM filter is equivalent to an adaptive CWM filter with a space varying center weight which is dependent on local signal statistics. The efficacy of the proposed filter has been evaluated by extensive simulations

Keywords

adaptive filters; image restoration; impulse noise; median filters; threshold logic; adaptive filter; center weighted median filter; image restoration; impulse noise; median based switching; multi-state median filter; numerical simulation; signal statistics; space variant median filter; thresholding logic; Adaptive filters; Additive noise; Australia; Computer science; Filtering; Image processing; Image restoration; Logic; Nonlinear filters; Software engineering;

fLanguage

English

Journal_Title

Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7130

Type

jour

DOI

10.1109/82.959870

Filename

959870