Specimens | (a) The number of pixels obtained from the proposed CNN model | (b) Total crack length obtained from the optical observation (mm) | Ratio (a/b) |
---|---|---|---|
P1-60 | 33,987,368 | 76,316 | 4.45 × 102 |
P1-120 | 39,942,906 | 83,866 | 4.76 × 102 |
P2-60 | 35,924,210 | 75,827 | 4.73 × 102 |
P2-120 | 40,607,469 | 86,856 | 4.67 × 102 |
P3-60 | 37,277,057 | 78,000 | 4.77 × 102 |