Title :
Smoothing speckled images using an adaptive rational operator
Author :
Ramponi, G. ; Moloney, C.
Author_Institution :
Dipt. di Elettronica, Trieste Univ., Italy
fDate :
3/1/1997 12:00:00 AM
Abstract :
This letter presents an adaptive rational filter for use in smoothing correlated speckle noise in images while preserving edges. The filter adapts to local conditions via point estimates of the standard deviation to mean ratio. The filter´s performance is demonstrated by quantitative tests on synthetically corrupted speckled images.
Keywords :
adaptive filters; image processing; random noise; smoothing methods; speckle; adaptive rational filter; adaptive rational operator; correlated speckle noise; smoothing; speckled images; Adaptive filters; Laser noise; Laser radar; Nonlinear filters; Signal to noise ratio; Smoothing methods; Speckle; Synthetic aperture radar; Testing; Ultrasonic imaging;
Journal_Title :
Signal Processing Letters, IEEE
