Fig. 4

Results of denoising the images corrupted by AWGN with σ=40. a Original image. b Noisy image. c BLF, 26.9332 dB. d MBLF, 26.6292 dB. e BLS-GSM, 29.4673 dB. f NLM 29.2290 dB. g BM3D 30.2165 dB. h Proposed SBLF (λ=1 in Fig. 2), 29.0490 dB. i Proposed SBLF with high band enhancement (λ=0.3), 27.3006 dB