River Extraction from Remote Sensing Images in Cold and Arid Regions Based on Attention Mechanism

Table 3

Attention model comparison test results.

Network	ResNet101	FReLU	Attention blocks	Precision	IoU	Average time (ms)
AR-LinkNet	✓	✓	✗	0.837	0.611	91.3
			Add only residual channel attention model	0.849	0.625	92.1
			Add only residual spatial attention model	0.843	0.619	91.8
			Two attention models in parallel	0.852	0.628	92.3
			Space first then channel model	0.856	0.634	93.1
			Channel first then space model	0.864	0.645	92.9