Simulation results

PeakSNR [dB] (Running time [s])
OriginalBicubicBicubicZeyde et al.Our GROur ANRNE+LSNE+NNLSNE+LLEOur A+ (0.5mil)Our A+Our A+ (16atoms)
24.9(0.00) 24.9(0.00) 25.5(9.63) 25.5(0.72) 25.5(1.17) 25.5(5.99) 25.4(66.29) 25.5(11.91) 25.6(1.49) 25.6(1.28) 25.5(0.94)
28.0(0.00) 28.0(0.00) 28.7(16.67) 28.6(1.31) 28.6(2.50) 28.6(10.54) 28.6(117.12) 28.6(20.92) 28.6(2.23) 28.7(2.23) 28.4(1.69)
26.6(0.00) 26.6(0.00) 27.6(10.38) 27.4(0.85) 27.5(1.59) 27.4(6.77) 27.4(72.15) 27.5(12.89) 27.7(1.45) 27.8(1.49) 27.6(1.10)
29.1(0.00) 29.1(0.00) 30.4(4.19) 30.3(0.30) 30.4(0.59) 30.2(2.69) 30.2(28.23) 30.4(5.11) 30.6(0.61) 30.6(0.62) 30.6(0.48)
26.0(0.00) 26.0(0.00) 27.6(3.68) 27.3(0.27) 27.8(0.51) 27.6(2.31) 27.5(24.43) 27.7(4.38) 28.1(0.53) 28.3(0.53) 27.9(0.40)
34.8(0.00) 34.8(0.00) 35.6(2.90) 35.6(0.22) 35.6(0.42) 35.5(1.84) 35.5(20.28) 35.6(3.72) 35.7(0.44) 35.7(0.45) 35.6(0.34)
30.4(0.00) 30.4(0.00) 32.3(7.03) 31.7(0.59) 32.3(1.12) 32.1(4.62) 31.9(50.04) 32.2(9.22) 32.8(1.12) 33.0(1.07) 32.5(0.84)
34.1(0.00) 34.1(0.00) 36.2(3.90) 35.4(0.29) 36.4(0.55) 36.2(2.54) 35.9(27.67) 36.4(4.86) 36.8(0.58) 36.9(0.59) 36.4(0.45)
34.7(0.00) 34.7(0.00) 36.2(10.39) 36.0(0.82) 36.3(1.52) 36.2(6.59) 36.0(73.40) 36.3(12.70) 36.6(1.59) 36.6(1.61) 36.3(1.29)
29.2(0.00) 29.2(0.00) 30.4(10.38) 30.1(0.83) 30.5(1.55) 30.4(6.47) 30.3(71.71) 30.4(12.56) 30.7(1.62) 30.9(1.62) 30.6(1.30)
32.9(0.00) 32.9(0.00) 35.7(15.51) 34.6(1.30) 35.7(2.40) 35.5(9.67) 35.3(110.30) 35.6(18.98) 36.5(2.49) 37.0(2.48) 36.1(2.08)
35.0(0.00) 35.0(0.00) 36.6(10.32) 35.7(0.86) 36.4(1.59) 36.5(6.43) 36.2(71.95) 36.4(13.12) 36.8(1.67) 37.0(1.64) 36.6(1.32)
26.9(0.00) 26.9(0.00) 29.3(11.52) 28.4(1.11) 29.0(2.06) 29.1(7.96) 29.0(80.12) 29.0(16.64) 29.6(2.20) 30.1(2.17) 29.3(1.75)
30.6(0.00) 30.6(0.00) 33.2(9.10) 32.4(0.75) 33.1(1.36) 32.9(5.69) 32.6(63.26) 33.0(11.07) 33.5(1.44) 33.6(1.41) 33.2(1.16)
Average PSNR 30.23 (0.00) 30.23 (0.00) 31.81 (8.97) 31.36 (0.73) 31.80 (1.35) 31.69 (5.72) 31.55 (62.64) 31.76 (11.29) 32.13 (1.39) 32.28 (1.37) 31.91 (1.08)

Simulation parameters

Scaling factorx2
High-res. patch size6 x 6
Feature upsampling factor2
Feature dim. (original)144
Feature dim. (reduced)28
Dictionary size1024
Dictionary maximal sparsity3
Dictionary iterations20
Duration1402.7 seconds
# of images14
Interpolation Kernelbicubic
07-Sep-2014 17:29:04