Pixel-Level Recognition of Pavement Distresses Based on U-Net

Table 1

The numbers of all distress types.

Distress	Number	Percent (%)
Transverse crack	1786	12.09
Longitudinal crack	2348	15.90
Alligator crack	1662	11.31
Block crack	126	0.86
Patch	6924	47.11
Pothole	1919	13.06