Fig. 8From: Sparse signal subspace decomposition based on adaptive over-complete dictionaryDespeckling for spatial complicated SAR image scene. a Noisy: 1-look; PSNR=−0.1042; SSIM=0.21. b PPB despeckling: PSNR=7.8943; SSIM=0.63. c SAR-BM3D despeckling: PSNR=9.9312; SSIM=0.73. d 3SD-based despeckling: PSNR=10.3316; SSIM=0.74Back to article page