Original | Bicubic | Bicubic | Zeyde et al. | Our GR | Our ANR | NE+LS | NE+NNLS | NE+LLE | Our A+ (0.5mil) | Our A+ | Our A+ (16atoms) |
31.8(0.00) | 31.8(0.00) | 33.1(2.71) | 32.8(0.45) | 33.0(0.63) | 32.9(1.92) | 32.8(16.76) | 33.0(3.49) | 33.2(0.65) | 33.3(0.67) | 33.1(0.57) | |
30.2(0.00) | 30.2(0.00) | 31.7(0.84) | 31.3(0.12) | 31.8(0.20) | 31.6(0.57) | 31.5(5.16) | 31.7(1.04) | 32.3(0.19) | 32.5(0.19) | 32.0(0.16) | |
22.1(0.00) | 22.1(0.00) | 23.6(0.66) | 23.1(0.11) | 23.5(0.15) | 23.4(0.45) | 23.3(3.96) | 23.4(0.80) | 23.9(0.14) | 24.4(0.15) | 23.7(0.13) | |
31.6(0.00) | 31.6(0.00) | 32.2(0.76) | 32.1(0.11) | 32.3(0.19) | 32.2(0.59) | 32.1(4.75) | 32.2(0.96) | 32.4(0.18) | 32.5(0.18) | 32.3(0.15) | |
26.5(0.00) | 26.5(0.00) | 27.9(0.76) | 27.4(0.12) | 27.8(0.18) | 27.6(0.53) | 27.6(4.72) | 27.7(0.99) | 28.3(0.19) | 28.6(0.19) | 28.0(0.16) | |
Average PSNR | 28.42 (0.00) | 28.42 (0.00) | 29.69 (1.15) | 29.34 (0.18) | 29.69 (0.27) | 29.55 (0.81) | 29.47 (7.07) | 29.61 (1.46) | 30.04 (0.27) | 30.28 (0.28) | 29.83 (0.23) |
Scaling factor | x4 |
High-res. patch size | 12 x 12 |
Feature upsampling factor | 4 |
Feature dim. (original) | 576 |
Feature dim. (reduced) | 30 |
Dictionary size | 1024 |
Dictionary maximal sparsity | 3 |
Dictionary iterations | 20 |
Duration | 64.7 seconds |
# of images | 5 |
Interpolation Kernel | bicubic |