A Crack Identification Method for Concrete Structures Using Improved U-Net Convolutional Neural Networks

Table 4

Comparison of precision of the three model test sets.

Image	U-net	Segnet	Improved U-net
Figure 12(a)	0.692	0.528	0.865
Figure 12(b)	0.696	0.465	0.832
Figure 12(c)	0.712	0.564	0.842
Figure 12(d)	0.735	0.535	0.808
Figure 12(e)	0.742	0.549	0.831
Figure 12(f)	0.724	0.573	0.823