A Novel Defect Detection Method for Ferrite Shield Surface Defects by Improved Faster R-CNN

Table 4

The data results comparison of the six models.

Models	Crazing	Pit	Impurity	Dirt	mAP	mAP increasing
1	0.771	0.694	0.637	0.579	0.671	—
2	0.731	0.858	0.854	0.489	0.734	0.063
3	0.845	0.896	0.770	0.551	0.766	0.095
4	0.820	0.900	0.780	0.592	0.773	0.102
5	0.791	0.924	0.809	0.643	0.792	0.121
6	0.853	0.926	0.790	0.674	0.810	0.139