Table 5.

Quantitative results of crack testing based on Poisson reconstruction degree.

Reference crack depth(mm)	0.35	0.5	1.0	1.5	2.0	2.5	3.5	5	8
Maximum Poisson reconstruction degree	0.024	0.035	0.036	0.034	0.031	0.036	0.035	0.034	0.032
Quantitative depth(mm)	0.33	0.53	0.97	1.55	2.2	2.7	3.41	4.8	8.2
Quantitative error (%)	−0.06	0.06	−0.03	0.03	0.01	0.07	−0.03	−0.04	0.02
Mean Absolute Error	0.109
Mean Squared Error	0.018