Multiframe Superresolution of Vehicle License Plates Based on Distribution Estimation Approach

Algorithm 1

Our iterative SR algorithm.

Input: The LR observations ; The initial HR image ; The auxiliary variables , , ,

, ; The initial parameters, , , and , .

;

repeat

 Compute by using (25);

 Compute by using (11);

 Compute and by using (9);

 Compute by using (13);

 Compute z ⁿ by using (24);

 Compute by using (26);

 Compute by using (27);

 Compute , , and by using (28)–(30);

 ;

until convergence criterion is met

Output:  .