A Novel Adaptive Directional Interpolation Algorithm for Digital Video Resolution Enhancement

Algorithm 2:

Adaptive dictionary construction

Partition f into overlapping patches , and for each patch, do the following steps:

  • Initialization: Set nonlocal neighbor number and search window size .

  • Dictionary construction:

    - Sweep over all possible patches over the searching window centered around , and compute the normalized candidate atom set ;

    - Compute the normalized inner product vector ;

    - Select the atoms with the largest values in to construct dictionary .

  • Output: The adaptive dictionary of the th image patch .

Algorithm 2: