Table 2.

The ablation study for accuracy improvement of FDD

Models	Improvement	REC-1	REC-2	REC-3	REC-4	AP-1	AP-2	AP-3	AP-4	AR	mAP
Cascade R-CNN	Baseline Resnet50	0.802	0.850	0.878	0.891	0.608	0.714	0.684	0.696	0.855	0.675
	+ Proposed preprocessing blocks and ultimate scaling	0.942	0.950	0.976	1.000	0.600	0.788	0.712	0.785	0.967	0.722
	+ Deformable operation and guided anchoring RPN	0.953	0.950	0.973	1.000	0.703	0.746	0.833	0.852	0.969	0.783