Fig. 3

Up and down sampling module. Where (a) and (b) denote the modules for downsampling and upsampling of wavelet transform, and (c) and (d) denote the modules for downsampling and upsampling of convolutional branching, respectively.

Up and down sampling module. Where (a) and (b) denote the modules for downsampling and upsampling of wavelet transform, and (c) and (d) denote the modules for downsampling and upsampling of convolutional branching, respectively.