Improved Dark Channel Defogging Algorithm for Defect Detection in Underwater Structures

Table 8

Disease ratio statistics.

Picture name	Proportion of black pixels (%)	Proportion of white pixels (%)	Proportion of very white pixels (%)	Proportion of pure white pixels (%)
Image 1	96.66	2.06	1.23	0.05
Image 2	98.32	0.65	0.79	0.24
Image 3	97.88	0.58	1.03	0.61
Image 4	95.41	1.09	1.92	1.58
Image 5	78.19	18.45	2.00	1.36
Image 6	81.54	15.22	1.65	1.59