Dual-Path Residual “Shrinkage” Network for Side-Scan Sonar Image Classification

Table 1

Detailed configuration of the 34- and 50-layer network infrastructure frameworks.

Layer	Output size	Kernel size		Module numbers
		Residual block (two)	Residual block (tree)
Conv1	112 × 112	7 × 7 × 64 (Conv) 3 × 3 (max pooling)
R1	56 × 56	3 × 3 × 64 (Conv); 3 × 3 × 64 (DS-Conv)	1 × 1 × 64 (Conv); 3 × 3 × 64 (DS-Conv); 1 × 1 × 256 (Conv)	3
R2	28 × 28	3 × 3 × 128 (Conv); 3 × 3 × 128 (DS-Conv)	1 × 1 × 128 (Conv); 3 × 3 × 128 (DS-Conv); 1 × 1 × 512 (Conv)	4
R3	14 × 14	3 × 3 × 256 (Conv); 3 × 3 × 256 (DS-Conv)	1 × 1 × 256 (Conv); 1 × 1 × 256 (DS-Conv); 1 × 1 × 1024 (Conv)	6
R4	7 × 7	3 × 3 × 512 (Conv); 3 × 3 × 512 (DS-Conv)	1 × 1 × 512 (Conv); 3 × 3 × 512 (DS-Conv); 1 × 1 × 2048 (Conv)	3
GAP	1 × 1