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Table 6 The RMSE comparison of the synthetic images corrupted by speckle and Gaussian noise under different noise levels

From: Rayleigh-maximum-likelihood bilateral filter for ultrasound image enhancement

Noise image

SNR = 15 dB

SNR = 12 dB

SNR = 10 dB

SNR = 7 dB

SNR = 5 dB

SNR = 3 dB

SNR = 1 dB

Proposed

0.00019

0.00016

0.00017

0.00037

0.00076

0.0012

0.0020

SBF

0.00073

0.0015

0.0025

0.0060

0.0075

0.0116

0.0187

Median

0.00096

0.0020

0.0033

0.0083

0.0107

0.0178

0.0313

SRAD

0.00032

0.00059

0.0018

0.0082

0.0181

0.0349

0.0628

NL-means

0.0019

0.0020

0.0021

0.0022

0.0023

0.0027

0.0035

Lee

0.0015

0.0021

0.0027

0.0036

0.0058

0.0092

0.0121

Kuan

0.0013

0.0016

0.0025

0.0045

0.0072

0.0103

0.0236