Simulation results

PeakSNR [dB] (Running time [s])
OriginalBicubicBicubicZeyde et al.Our GROur ANRNE+LSNE+NNLSNE+LLEOur 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)

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
Duration64.7 seconds
# of images5
Interpolation Kernelbicubic
07-Sep-2014 16:15:28