Defect Detection of Pandrol Track Fastener Based on Local Depth Feature Fusion Network

Table 2

Track fastener pictures automatic segmentation results.

Image processing method	(piece)	(piece)	(%)
Original	1064	1012	95.11
Grayscale	1064	1037	97.46
Grayscale + histogram equalization	1064	1052	98.87
Grayscale + histogram equalization + Gaussian filtering	1064	1062	99.81