Table 2: A comparison of different architecture with 64 filters of convolution layers on the test set of moderate. The best performance is in bold.

Architecture of network	PSNR
Conv-BN-ReLU ×2	26.90
Conv-BN-ReLU + Conv	26.52
Conv-BN-ReLU ×4	26.79
Conv-BN-ReLU ×3 + Conv	26.97