Table 2 Test results of ultrasonic image for railway track sample images
Defect serial number | Defects number | Missed detection rate \(P_{{3}}\)(%) | Misjudgment rate \(P_{{2}}\)(%) | Accuracy rate \(P_{{1}}\)(%) | |
|---|---|---|---|---|---|
1 | 75 | 0 | 1.33 | 98.67 | |
2 | 27 | 0 | 0 | 1 | |
3 | 101 | 0 | 0.99 | 99.01 | |
4 | 51 | 1.96 | 0 | 98.04 | |
5 | 102 | 0.98 | 0 | 99.02 | |
6 | 19 | 5.26 | 0 | 94.74 | |
7 | 42 | 0 | 0 | 1 | |
8 | 109 | 0.92 | 0 | 99.08 | |
9 | 19 | 0 | 0 | 1 | |
10 | 79 | 0 | 0 | 1 | |
11 | 50 | 0 | 4.00 | 96.00 | |
12 | 107 | 0 | 0 | 1 | |
Total | 781 | 0.38 | 0.64 | 98.98 | |