Enhancing Structural Crack Detection through a Multiscale Multilevel Mask Deep Convolutional Neural Network and Line Similarity Index

Table 7

Result of the underground tunnel test set (total 20 images) using the proposed method.

Image no	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	Mean
	0.99	1.00	0.98	0.97	0.98	0.93	0.99	0.63	0.71	0.98	0.46	0.97	0.97	0.95	0.96	1.00	0.98	0.70	0.98	1.0	0.91
	0.95	0.91	0.61	0.95	0.26	0.19	0.51	0.99	0.98	0.92	0.72	0.94	0.90	0.73	0.62	0.93	0.26	0.53	0.92	0.45	0.71
	0.97	0.95	0.76	0.96	0.41	0.32	0.67	0.77	0.82	0.95	0.56	0.95	0.94	0.82	0.75	0.96	0.41	0.61	0.95	0.62	0.76

(Best scores are shown in bold font).