Research Article

Wavelet Domain Multidictionary Learning for Single Image Super-Resolution

Table 1

The PSNR and SSIM values of the proposed method with different wavelet-filters (for each wavelet, the left is PSNR values and the right is SSIM values).

Img. haar db4 sym4 bior6.8

Baboon 25.600.76 25.50 0.76 25.55 0.76 25.54 0.76
Comic 27.880.90 27.52 0.89 27.78 0.90 27.77 0.90
Flower 32.440.93 32.02 0.93 32.32 0.93 32.31 0.93
Girl 35.64 0.89 35.63 0.89 35.64 0.89 35.65 0.89
Lena 36.430.93 36.17 0.93 36.35 0.93 36.33 0.93
Man 30.550.88 30.23 0.88 30.43 0.88 30.41 0.88
Pepper 36.780.92 36.27 0.92 36.63 0.92 36.61 0.92
Zebra 33.500.94 32.92 0.94 33.36 0.94 33.36 0.94
Parrot 33.790.96 33.08 0.95 33.49 0.95 33.38 0.95
Parthenon 29.210.85 28.82 0.84 29.06 0.84 29.02 0.84
Raccoon 32.500.90 32.32 0.90 32.43 0.90 32.39 0.90
Avg. 32.210.90 31.86 0.89 32.09 0.89 32.07 0.89