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Table 3 The RMSE comparison of the synthetic images corrupted by speckle 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

0.00008

0.00017

0.00013

0.00014

0.00032

0.00058

0.00074

SBF

0.0007

0.0015

0.0023

0.0072

0.0071

0.0115

0.0182

Median

0.0013

0.0024

0.0036

0.0072

0.0104

0.0177

0.0306

SRAD

0.00013

0.00037

0.0014

0.0083

0.0174

0.0355

0.0624

NL-means

0.0018

0.0019

0.0019

0.0020

0.0021

0.0024

0.0031

Lee

0.0014

0.0018

0.0022

0.0029

0.0041

0.0056

0.0096

Kuan

0.0012

0.0016

0.0021

0.0033

0.0048

0.0077

0.0115