PERSONAL IDENTIFICATION DEVICE AND METHOD

• US 20100045428A1
• Filed: 11/06/2009
• Published: 02/25/2010
• Est. Priority Date: 09/06/2000
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Miyatake, Takafumi, Miura, Naoto, Nagasaka, Akio
• Granted Patent: US 8,009,875 B2
• Time in Patent Office: Days
• US Class Current: 340/5.530
• 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 40/1312 direct reading, e.g. contactless acquisition
• CPC Class Codes: G06V 40/1341 Sensing with light passing through the finger
• CPC Class Codes: G06V 40/14 Vascular patterns

Abstract

The invention aims at providing personal identification in environments where non-contact is required, with high accuracy even though using a finger vein pattern images unclear and susceptible to positional deviations, wherein it has: a means for acquiring finger vein patterns without contact; a means for carrying out rotational correction using the outline of a finger as a method of taking out a vein pattern contained in the acquired image; a means for normalizing the position of the finger image with reference to the fingertip; a means for acquiring an overall vein pattern statistically by repetitively tracking regions of dark luminance intensities for a desired length from a desired position in the image; a matching means for comparing regions where vein patterns manifest vivid features; and a means for independent matching of subregions and evaluating positional deviations where matching is recognized.

Claims

1. A system for enabling entrance/exit, the system comprising:

an input interface for obtaining an image including a personal vein pattern;

a personal identification unit for executing a personal identification by generating a vein pattern from the image obtained from the input interface, and comparing the generated vein pattern with a registered vein pattern;

a door to be automatically opened in a case that the generated vein pattern is identical with the registered vein pattern; and

a control unit for controlling opening/closing of the door,

wherein the input interface includes a light source, an imaging device for capturing a light applied from the light source and transmitted through a portion of a human body, and a box having the light source and the imaging device inside thereof,

wherein the box has a slot or opening, into which the portion of the human body can be inserted, and wherein the light source and the imaging device are arranged opposite each other with the slot or opening between them.

2. The system according to claim 1, wherein the slot or opening is opened at both sides thereof.

3. The system according to claim 1, wherein the imaging device has a camera and an optical filter.

4. The system according to claim 1, wherein the personal identification unit has a storage device storing the registered vein pattern and a personal information corresponding to the registered vein pattern.

5. The system according to claim 4, wherein the personal identification unit is connected to an outside storage unit for storing the registered vein pattern and a personal information corresponding to the registered vein pattern.

6. The system according to claim 1, wherein the input interface has a corner which is chamfered.

7. The system according to claim 1, wherein the system further comprises an input unit for receiving a personal identification number or information input with a key operation or an IC card.

8. The system according to claim 7, wherein after the input unit receives the personal identification number or information input with a key operation or an IC card, the personal identification unit executes the personal identification.