Fig. 7From: Sparse signal subspace decomposition based on adaptive over-complete dictionaryDenoising for spatial complicated image scene comparing BM3D method with 3SD-based method. a Original: Barbara (a fragment) 256∗256. b Noisy: σ=70; PSNR=11.22; SSIM=0.142. c BM3D denoising: PSNR=24.08; SSIM=0.7026. d 3SD denoising: PSNR=24.21; SSIM=0.765Back to article page