An Improved Nondestructive Semantic Segmentation Method for Concrete Dam Surface Crack Images with High Resolution

Table 2

mIoU index of FCNs on validation crack set.

Model name	FCN architecture	Backbone	Bath size	Max mIoU	Total epoch	Relative/absolute training time
A	DeepLabv3	ResNetv2-50s	30	0.27	400	1.00x/59 h
B	DeepLabv3-DUC	ResNetv2-50s	30	0.57 + 111.1%	400	1.04x/61 h
C	DeepLabv3+	ResNetv2-50s	30	0.56 + 107.4%	400	1.73x/102 h