Design and real-time implementation of a 3-D rational filter for edge preserving smoothing

Author

Cocchia, Francesco ; Carrato, Sergio ; Ramponi, Giovanni

Author_Institution

Dipt. di Elettrotecnica, Elettronica ed Inf., Trieste Univ., Italy

Volume

43

Issue

4

fYear

1997

fDate

11/1/1997 12:00:00 AM

Firstpage

1291

Lastpage

1300

Abstract

A nonlinear spatio-temporal filter capable of significantly attenuating noise in image sequences without corrupting image details is presented. The characteristics of the filter are described, and the results of several simulations on real-world sequences are shown. A real-time implementation of the algorithm on a last generation DSP is also described. It is shown that, by suitably exploiting the computational capability of the DSP, it is possible to process CIF images at 10 frames/sec

Keywords

image sequences; interference suppression; low-pass filters; multidimensional digital filters; nonlinear filters; smoothing methods; video signal processing; 3-D rational filter; CIF images; DSP; computational capability; design; edge preserving smoothing; image details; image noise; image sequences; nonlinear spatio-temporal filter; real-time implementation; real-world sequences; Computational modeling; Cutoff frequency; Digital signal processing; Ear; Electronic mail; Filters; Noise reduction; Radio frequency; Signal to noise ratio; Smoothing methods;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.642398

Filename

642398