An Alternating Direction Method for Mixed Gaussian Plus Impulse Noise Removal

Figure 5

Top: images blurred with out-of-focus kernel of radius 3 and then corrupted by Gaussian noise with 𝜎=5 and salt-and-pepper noise with 𝑠=50%. The second line: results restored by MNID-ADMM (𝛼₁=0.9, 𝛽₁=𝛽₂=𝛽₃=0.05). The third line: Images blurred with out-of-focus kernel of radius 3, and then corrupted by Gaussian noise with 𝜎=5 and salt-and-pepper noise with 𝑠=70%. Bottom: results restored by MNID-ADMM (𝛼₁=0.9, 𝛽₁=𝛽₂=𝛽₃=0.05).