Simulation results

PeakSNR [dB] (Running time [s])
OriginalBicubicGRANRZeyde et al.A+Our A+BOur A+AOur A+COur IA
31.8(0.00) 32.8(0.55) 33.0(0.91) 33.1(4.16) 33.3(0.96) 33.3(2.66) 33.3(0.88) 33.3(1.88) 33.3(6.45)
30.2(0.00) 31.3(0.19) 31.8(0.31) 31.7(1.31) 32.5(0.27) 32.6(1.13) 32.9(0.31) 33.1(0.77) 33.3(2.54)
22.1(0.00) 23.1(0.16) 23.5(0.27) 23.6(1.05) 24.4(0.24) 24.5(1.02) 25.0(0.24) 25.6(0.65) 26.1(2.19)
31.6(0.00) 32.1(0.20) 32.3(0.32) 32.2(1.26) 32.5(0.28) 32.5(1.13) 32.6(0.29) 32.7(0.75) 32.8(2.48)
26.5(0.00) 27.4(0.20) 27.8(0.33) 27.9(1.25) 28.6(0.28) 28.7(1.08) 29.0(0.29) 29.4(0.75) 29.7(2.48)
Average PSNR 28.42 (0.00) 29.34 (0.26) 29.69 (0.43) 29.69 (1.81) 30.28 (0.41) 30.33 (1.40) 30.58 (0.40) 30.84 (0.96) 31.09 (3.23)

Simulation parameters

Scaling factorx4
High-res. patch size12 x 12
Feature upsampling factor4
Feature dim. (original)576
Feature dim. (reduced)30
Dictionary size1024
Dictionary maximal sparsity3
Dictionary iterations20
Duration481.7 seconds
# of images5
Interpolation Kernelbicubic
19-Sep-2015 23:27:41