DocumentCode
1226972
Title
The rational filter for image smoothing
Author
Ramponi, Giovanni
Author_Institution
Dipartimento di Elettrotecnica Elettronica ed Inf., Trieste Univ., Italy
Volume
3
Issue
3
fYear
1996
fDate
3/1/1996 12:00:00 AM
Firstpage
63
Lastpage
65
Abstract
A nonlinear operator is presented that is able to effectively attenuate the noise that corrupts an image while introducing small distortions on the image details. It is described by a rational function, i.e., by the ratio of two polynomials in the input variables. Notwithstanding its simplicity, this operator proves to be more powerful than conventional methods for many noise distributions.
Keywords
image processing; noise; polynomials; smoothing methods; image distortions; image smoothing; input variables; noise attenuation; noise corrupted image; noise distributions; nonlinear operator; polynomials; ratio; rational filter; rational function; Cutoff frequency; Digital signal processing; Filtering; Image processing; Input variables; Nonlinear distortion; Nonlinear filters; Polynomials; Smoothing methods; Statistical distributions;
fLanguage
English
Journal_Title
Signal Processing Letters, IEEE
Publisher
ieee
ISSN
1070-9908
Type
jour
DOI
10.1109/97.481156
Filename
481156
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