Table 2. The result comparison on the selected COCO dataset.

Method	Faster R-CNN			Mask R-CNN			Ours
Index	Precision	Recall	F1-score	Precision	Recall	F1-score	Precision	Recall	F1-score
Bicycle	0.38	0.35	0.36	0.41	0.42	0.41	0.45	0.47	0.46
Car	0.30	0.28	0.29	0.32	0.35	0.33	0.37	0.39	0.38
Bus	0.57	0.60	0.58	0.65	0.61	0.63	0.68	0.67	0.67
Bird	0.38	0.35	0.36	0.34	0.31	0.32	0.36	0.39	0.37
Cat	0.53	0.47	0.50	0.58	0.61	0.59	0.59	0.55	0.57
Dog	0.29	0.31	0.30	0.55	0.49	0.52	0.61	0.58	0.59