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

Table 4

Test results of beam bridge (tailwind, side).

Items	6 m	5.0 m	4.0 m	3.5 m	3.0 m	2.5 m
Level 0	0.995	0.999	0.997	0.968	0.998	0.859
Level 1	0.991	0.973	0.981	0.979	0.991	0.841
Level 2	0.978	0.969	0.953	0.968	0.954	0.829