A Novel 3D CAD Model Retrieval Method Based on Vertices Classification and Weights Combination Optimization

Table 2

Performance comparison: retrieval performance metrics of VSC, VSC_WCO, D2, LF, ZFDR, and PANORAMA on ESB, PSB, and NTU databases.

Database	Methods	NN	FT	ST	DCG
ESB	PANORAMA	0.86	0.49	0.64	0.79
	ZFDR	0.84	0.47	0.61	0.77
	VSC_WCO	0.84	0.51	0.58	0.81
	VSC	0.82	0.40	0.48	0.76
	LF	0.82	0.41	0.54	0.75
	D2	0.73	0.27	0.37	0.70
PSB	PANORAMA	0.75	0.48	0.60	—
	ZFDR	0.70	0.44	0.55	0.70
	VSC_WCO	0.69	0.42	0.54	0.72
	VSC	0.67	0.36	0.47	0.62
	LF	0.66	0.38	0.49	0.63
NTU	PANORAMA	0.80	0.49	0.61	0.76
	ZFDR	0.75	0.45	0.58	0.73
	VSC_WCO	0.67	0.43	0.54	0.69
	VSC	0.65	0.37	0.46	0.61
	LF	0.61	0.34	0.42	0.55