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Table 1 Parameter selection in terms of blur kernel and regularization parameter (case 1 is for the low-resolution image without ground truth; case 2 is for the low-resolution images acquired by downsampling the ground truth images)

From: Super-resolution via a fast deconvolution with kernel estimation

  Upscale factor Size Deviation α
Case 1 2 5×5 1.25 103
  3 7×7 1.85 104
  4 9×9 2.5 105
Case 2 2 3×3 1.5 103
  3 5×5 1.8 104
  4 7×7 2.3 105