Research on Surface Defect Detection of Rare-Earth Magnetic Materials Based on Improved SSD

Table 1

Comparison of performance indexes between the improved SSD algorithm and other algorithms.

Algorithm	mAP/%	Detection accuracy (AP)/%
		Unfilled corner	Crack	Deformation	Line mark
Faster R-CNN	77.48	69.86	85.11	63.51	91.45
YOLO-V3	81.88	86.58	84.63	66.25	90.06
MobileNetV2-SSD	73.83	62.66	79.74	67.50	85.43
SSD (original)	80.24	80.28	82.42	70.57	87.69
SSD (improvement)	83.65	86.37	85.31	70.89	92.02