Efficient and Effective Total Variation Image Super-Resolution: A Preconditioned Operator Splitting Approach

Algorithm 1

Input: 𝑠=∑_𝑘𝑀^𝑇_𝑘𝑆^𝑇𝑦_𝑘,𝑅=∑_𝑘𝑀^𝑇_𝑘𝑆^𝑇𝑆𝑀_𝑘,𝐵.

Output: 𝑧⁰=𝐵⁻¹𝑅⁻¹𝑠.