Predicted Anchor Region Proposal with Balanced Feature Pyramid for License Plate Detection in Traffic Scene Images

Table 5

Detection results of each proposed network on CCPD dataset.

Network	Detection performance (%)
	Base	DB	FN	Rotate	Tilt	Weather	Challenge	Average
Faster R-CNN	98.1	92.1	83.7	91.8	89.4	81.1	83.9	88.6
FPN with faster R-CNN baseline	99.2	95.4	87.5	93.0	91.3	85.4	86.3	91.2
Faster R-CNN + balanced feature pyramid	99.5	96.2	89.1	93.2	91.6	88.9	90.1	92.7
Faster R-CNN + balanced pyramid without L2-norm	99.3	96.2	88.9	93.1	91.0	87.6	88.3	92.1
Faster R-CNN + predicted anchor RPN	98.5	92.6	84.0	91.5	89.4	81.4	84.4	88.8
Faster R-CNN + balanced pyramid with L2-norm + predicted anchor RPN	99.5	96.4	90.1	93.2	91.8	89.7	91.2	93.1