Table 4: Comparison with other defect detection schemes.


AlexNet CNN [30]Crack90Cracks on concrete surfaces
SSD MobileNet [26]Surface defect detection95Surface defect detection
Compact CNN [28]Damaged spots, dust, and scratches86.82Metallic surface defect detection
8-layer CNN in the UAV [36]Crack96.6Cracks on concrete surfaces
Faster RCNN [29]Crack, corrosion, and delamination84.7Metal surface inspection
Enhanced SSD MobileNetStain and defect96.2Aircraft inspection