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. 2020 Dec 31;17(9):6489–6498. doi: 10.1109/TII.2020.3048391

Fig. 4.

Fig. 4.

Schematic of the proposed tri-level attention unit (TAU) integrating channel attention (CA), spatial attention (SA), and pixel attention (PA) mechanisms. Here, channel broadcasting operation is carried out before element-wise multiplication/addition of feature maps.