Bin Fang, Jiayi Chen. Wavelet Threshold Denoising Algorithm for Impulse Noise Removal[J]. Laser & Optoelectronics Progress, 2021, 58(22): 2210016
- Laser & Optoelectronics Progress
- Vol. 58, Issue 22, 2210016 (2021)
Fig. 1. PSNR corresponding to different k
Fig. 2. Shrinkage functions. (a) Hard threshold function; (b) soft threshold function; (c) differentiable asymptotic shrinkage function
Fig. 3. Experimental images. (a) hill; (b) cameraman; (c) mr; (d) xray
Fig. 4. Denoising results of different algorithms on image mr. (a) Original image; (b) AMWMF; (c) MFFOF; (d) ASMF; (e) ADWMF; (f) IMF; (g) ENA; (h) WTDA
Fig. 5. Denoising results of different algorithms on image hill. (a) Original image; (b) AMWMF; (c) MFFOF; (d) ASMF; (e) ADWMF; (f) IMF; (g) ENA; (h) WTDA
Fig. 6. PSNR of denoising images with different algorithms. (a) cameraman; (b) xray
Fig. 7. EPI of denoising images with different algorithms. (a) cameraman; (b) xray
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Table 1. Processing time of different denoising algorithms unit: s
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