[Retracted] Deep Image Watermarking to JPEG Compression Based on Mixed-Frequency Channel Attention

Figure 6

The other structures of mixed-frequency channel attention, which are proposed in the ablation experiment. The structure called LFCA is only composed of several frequency channel attention blocks with low-frequency components. The structure called SE consists of several SE channel attention blocks. The structure called SE&LFCA inserts an FCA block behind the SE blocks. The structure called LFCA&SE inserts FCA blocks in front of the SE blocks.