Title :
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
fDate :
11/1/1997 12:00:00 AM
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;
Journal_Title :
Consumer Electronics, IEEE Transactions on
