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

Table 12

Test results of actual beam bridge (bottom).

Items	3 m	2.6 m	2.2 m	2.0 m	1.8 m	1.6 m
Level 0	0.998	0.985	0.98	0.975	0.974	0.972
Level 1	0.985	0.975	0.976	0.976	0.973	0.97
Level 2	0.98	0.981	0.976	0.904	0.833	0.812