| 摘要 |
A personal identification apparatus is provided to carry out personal identification with high accuracy even though it uses a pattern of finger veins susceptible to rotation or luminance fluctuations. An interface has a finger inlet(22), which is a groove-shaped gap. By passing fingers(20) through that part, a vein pattern is acquired. In doing so, there is no need to bring the fingers into contact with the identification device itself. Also, by passing a plurality of fingers through the groove, a vein pattern of a plurality of fingers can be picked up. Furthermore, by swinging down the fingers in an arc track centering on a shoulder, elbow or wrist, it is also possible to pick up a finger image by be consecutively passing the plurality of fingers through the finger inlet. Where such a non-contact image pick-up method is adopted, the picked-up finger image rotates relative to the plane of the picked-up image. Therefore, the picked-up finger image inevitably requires rotational correction.
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