SIFT Based Vein Recognition Models: Analysis and Improvement

Table 5

EER value in respect to different CEs on two different hand vein databases.

Database	Linear/nonlinear functional enhancement (LNFE)
	Original	IN	GLS	CS	GC08	LS	UM	HBF	HF	INE
Lab-made	18.4	15.589	9.8	15.604	17.302	16.4	9.813	15.71	18.605	18.61
PUT	21.3	17.543	8.12	16.954	18.302	15.32	9.672	16.135	19.612	21.36
Database	HE and its variants (HEs)					Hierarchical enhancement models (HEM)
	Original	HE	AHE	CLAHE	CLHE	IHE	DHE	RASF	HHE	HEHBF
Lab-made	18.4	13.268	2.207	7.056	14.2	6.056	1.086	7.65	4.954	11.4
PUT	21.3	12.736	1.936	7.126	15.1	6.137	0.987	8.352	5.13	12.76