Table 5. Comparison with light weight state-of-the-art models. We assume the HR image is 720P. The red shows the best while the blue indicates the second-best performance.

Scale Model Params Multi-Adds Set 5 PSNR/SSIM Set 14 PSNR/SSIM B 100 PSNR/SSIM Urban 100 PSNR/SSIM Real-number Upscale
2 VDSR [4] 665K 612.6G 37.53/0.9587 33.03/0.9124 31.90/0.8960 30.76/0.9140 No
LapSRN [34] 813K 29.9G 37.52/0.9590 33.08/0.9130 31.80/0.8950 30.41/0.9100 No
MPRNet [31] 538K - 38.08/0.9608 33.79/0.9196 32.25/0.9004 32.52/0.9317 No
EMSR (ours) 296K 94.5G 37.57/0.9588 33.16/0.9144 31.95/0.8959 30.99/0.9162 Yes
3 VDSR [4] 665K 612.6G 33.66/0.9213 29.77/0.8314 28.82/0.7976 27.14/0.8279 No
MPRNet [31] 538K - 34.57/0.9285 30.42/0.8441 29.17/0.8073 28.42/0.8578 No
EMSR (ours) 296K 61.4G 33.92/0.9235 29.91/0.8370 28.89/0.7980 27.31/0.8324 Yes
VDSR [4] 665K 612.6G 31.35/0.8838 28.01/0.7674 27.29/0.7251 25.18/0.7524 No
4 LapSRN [34] 813K 149.4G 31.54/0.8850 28.19/0.7720 27.32/0.7280 25.21/0.7560 No
MPRNet [31] 538K 31.3G 32.38/0.8969 28.69/0.7841 27.63/0.7385 26.31/0.7921 No
EMSR (ours) 296K 49.9G 31.59/0.8863 28.33/0.7797 27.36/0.7267 25.38/0.7590 Yes