Finger-Vein Recognition Using Bidirectional Feature Extraction and Transfer Learning

Table 1

The introduction of finger-vein database.

Datasets	FV-USM	FV-SIPL
Examples
Number of people	123	36
Number of hands	2	1
Fingers of each hand	2 (index, middle)	3 (index, middle, and ring)
Pictures of each finger	6	12
Total number	2952 (123 × 2 × 2 × 6)	1296 (36 × 1 × 3 × 12)