Yunjun Zhan, Tengda Dai, Jiejun Huang, Yusen Dong, Fawang Ye, Cong Tang, Meng Wang. Synthetic Aperture Radar Image Filtering Based on Clustering Three-Dimensional Block-Matching[J]. Laser & Optoelectronics Progress, 2018, 55(4): 041004
- Laser & Optoelectronics Progress
- Vol. 55, Issue 4, 041004 (2018)
Fig. 1. Flowchart of clustering-based BM3D algorithm
Fig. 2. (a) Original image; (b) noisy image; filtering results of (c) BM3D algorithm and (d) clustering-based BM3D algorithm
Fig. 3. (a) Original image; filtering results of (b) NLMeans algorithm, (c) BM3D algorithm, and (d) clustering-based BM3D algorithm
Fig. 4. (a1)-(a3) Enlargement of marked regions in Fig. 3(a); (b1)-(b3) enlargement of marked regions in Fig. 3(b); (c1)-(c3) enlargement of marked regions in Fig. 3(c)
Fig. 5. Filtering images for different scenes. (a) PSNR=26.3272 dB; (b) PSNR =25.7652 dB; (c) PSNR =25.5423 dB; (d) PSNR =23.8654 dB
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Table 1. Running time of each algorithm and PSNR values for specific regions
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