Personal identification system

• US 20080068591A1
• Filed: 10/26/2007
• Published: 03/20/2008
• Est. Priority Date: 09/20/2000
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Umemura, Shin-ichiro, Ito, Yoshitoshi, Kono, Miyuki, Miyatake, Takafumi, Harada, Kunio, Ueki, Hironori
• Granted Patent: US 7,671,977 B2
• Time in Patent Office: Days
• US Class Current: 356/71
• CPC Class Codes: G06V 10/10 Image acquisition document image scanning and transmission H04N1/00; control of digital cameras H04N23/60
• CPC Class Codes: G06V 40/14 Vascular patterns
• CPC Class Codes: G06V 40/145 Sensors therefor

Abstract

A personal identification system, which uses a vein pattern of a finger, optimizes the amount of light of a light source based on a captured finger image and emphasizes the vein pattern during image processing for identification.

Claims

1. A personal authentication apparatus comprising:

a light for irradiating a hand,

a plurality of camera for creating image from transmitted light from the hand and placed opposite side from the light to the hand, and

an image processing unit that extracts blood vessel patterns of the hand from the image and conduct authentication by comparing said blood vessel with registered patterns.

2. The personal authentication apparatus according to claim 1, wherein said plurality of camera creates image from different side of the hand, and said image processing unit conducts authentication with the closest image in the created images from said plurality of camera to the registered vessel pattern.

3. The personal authentication apparatus according to claim 1, wherein registered pattern is three dimension data created by said plurality of camera, and said image processing unit conducts authentication with the closest image created from at least one of the plurality of camera.

4. The personal authentication apparatus according to claim 3, wherein said registered pattern is moving image.