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Table 1 PSF and noise variation for each scenario

From: A robust iterative algorithm for image restoration

Scenario Blur PSF σ 2
1 1/(1+x 2+y 2),x,y=−7,…,7 2
2 1/(1+x 2+y 2),x,y=−7,…,7 8
3 9×9 uniform 0.3
4 [1 4 6 4 1]T[1 4 6 4 1]/256 49
5 Gaussian with std=1.6 4
6 Gaussian with std=0.4 64