The Feasibility Assessment Study of Bridge Crack Width Recognition in Images Based on Special Inspection UAV

Table 11

Test results of actual beam bridge (side).

Items	6 m	5.0 m	4.0 m	3.5 m	3.0 m	2.5 m
Level 0	0.988	0.991	0.98	0.98	0.96	0.861
Level 1	0.987	0.985	0.984	0.98	0.92	0.859
Level 2	0.978	0.98	0.98	0.974	0.951	0.826