Poisson Noise Removal Scheme Based on Fourth-Order PDE by Alternating Minimization Algorithm

Algorithm 1

Alternating minimization algorithm for solving the model (3.4).

Initialization: 𝑤⁰=0 and 𝑝⁰=0;

𝐖𝐡𝐢𝐥𝐞𝑘=1,2,3,…𝑁.

 Compute 𝑧^𝑘 according to the first equation of (3.5) for fixed 𝑤^𝑘−1.

 Compute 𝑤^𝑘 according to the second equation of (3.5) for fixed 𝑧^𝑘.

End

 Compute 𝑢=exp(𝑤).