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. Author manuscript; available in PMC: 2009 Nov 27.
Published in final edited form as: IEEE Trans Image Process. 2009 May 27;18(10):2221–2229. doi: 10.1109/TIP.2009.2024064

TABLE II.

SNR values obtained with several filters applied to the 2D matlab “Phantom” image.

SNR (dB)
Filter σ = 0.2 σ = 0.4 σ = 0.8
Noisy phantom 39.32 25.96 14.11
Lee’s filter 49.41 42.71 32.31
Kuan’s filter 49.43 42.71 32.33
SBF 49.61 43.86 38.04
SRAD 57.17 44.07 33.29
NL-means 62.15 47.92 38.72
OBNLM 64.13 53.12 42.13