Biometrics authentication system registration method, biometrics authentication system, and program for same

• US 8,000,503 B2
• Filed: 03/18/2005
• Issued: 08/16/2011
• Est. Priority Date: 10/08/2004
• Status: Active Grant

• Current Assignee: Fujitsu Frontech Limited (Fujitsu Limited), Fujitsu Limited
• Original Assignee: Fujitsu Frontech Limited (Fujitsu Limited), Fujitsu Limited
• Inventors: Kamata, Hideo, Eguchi, Shinichi, Kishino, Takumi
• Primary Examiner(s): DULANEY, KATHLEEN YUAN
• Application Number:
  US11/083,296
• Publication Number:
  US 20060078170A1
• Time in Patent Office: 2,342 Days
• Field of Search: 382/115, 382/192, 382/199, 382/312, 356/71, 340/5.52
• US Class Current: 382/115
• CPC Class Codes: G06F 18/00 Pattern recognition
• CPC Class Codes: G06V 40/14 Vascular patterns
• CPC Class Codes: G06V 40/50 Maintenance of biometric data or enrolment thereof
• CPC Class Codes: G07C 9/257 electronically G07C9/26 takes precedence
• CPC Class Codes: G07C 9/27 with central registration
• CPC Class Codes: G07C 9/37 using biometric data, e.g. fingerprints, iris scans or voice recognition
• CPC Class Codes: G07C 9/38 with central registration

Abstract

A biometrics authentication system utilizes information of the palm of the hand of a body to perform individual authentication. A processing unit obtains an image of the palm of the hand of the same body a plurality of times from an image capture unit, judges the degrees of similarity among the characteristic data sets of the plurality of images of the palm of the hand, and registers a plurality of characteristic data sets with a high degree of similarity in a storage unit. And the shape of the hand in the image is checked from the outlines in the image of the palm of the hand, so it is possible to rapidly judge whether image capture has been successful and extract characteristic data, and registration processing can be executed in a short length of time.

Claims

1. A biometrics authentication system for performing individual authentication comprising:

an image capture unit which captures images of a hand;

a storage unit which stores plural registered characteristic data of a palm of the hand; and

a processing unit which extracts outlines of borders of the palm and a portion of fingers of said hand from captured said image of said hand, judges from detected position of said extracted outlines in a capture range of the image capture unit and a number of said extracted outlines whether a capture of said image has been successful, wherein a successful capture is obtained by correctly holding the hand over the capture range, extracts a blood image characteristic data as said characteristic data from an image of the palm of said hand which is judged to have been captured successfully, and registers said blood image characteristic data in said storage unit,

wherein said processing unit obtains said image of the hand a plurality of times from said image capture unit, judges degrees of similarity among said blood image characteristic data for each of said plurality of images of the hand, and registers in said storage unit a plurality of said blood image characteristic data with a high degree of similarity.

2. The biometrics authentication system according to claim 1, wherein said processing unit obtains images of the hand from said image capture unit, until a prescribed number of blood image characteristic data with a high degree of similarity are obtained.

3. The biometrics authentication system according to claim 1, wherein said processing unit, after registering said plurality of blood image characteristic data with a high degree of similarity in said storage unit, obtains from said image capture unit an image of said hand, extracts said blood image characteristic data, verifies said blood image characteristic data against said plurality of blood image characteristic data registered in said storage unit, and performs trial authentication.

4. The biometrics authentication system according to claim 1, wherein said processing unit extracts the outlines from an image of said hand captured by said image capture unit, judges whether said image capture has been successful from said extracted outlines, extracts said blood image characteristic data from said image of the hand judged to have been captured successfully, verifies said blood image characteristic data against said plurality of blood image characteristic data registered in said storage unit, and performs individual authentication.

5. The biometrics authentication system according to claim 4, wherein, at the time of individual authentication, said processing unit reads said plurality of blood image characteristic data from said storage unit according to identification information for an individual, and verifies said blood image characteristic data obtained from said image of the hand obtained from said image capture unit against said read plurality of blood image characteristic data.

6. The biometrics authentication system according to claim 5, wherein said processing unit detects a fact that said extracted blood image characteristic data is similar to one among said plurality of registered blood image characteristic data, and performs individual authentication.

7. The biometrics authentication system according to claim 5, wherein said image capture unit has a distance sensor which measures a distance between said image capture unit and the palm of said hand,

and said processing unit obtains the image of the palm of said hand from said image capture unit when the distance measured by said distance sensor is within a prescribed range, and changes said prescribed range at a time of said registration and at a time of said individual authentication.

8. The biometrics authentication system according to claim 1, wherein said processing unit judges the degree of similarity to be high when said degree of similarity is equal to or greater than a prescribed threshold.

9. The biometrics authentication system according to claim 1, wherein said processing unit, upon judging that said image capture has not been successful from said outlines of said image of said hand, causes said image capture unit to again perform image capture of said hand, and obtains the image of said hand.

10. A non-transitory computer-readable medium encoded with a computer program, which causes a computer to execute the steps of:

obtaining an image of a portion of a hand of a body from an image capture unit which captures the portion of the hand including a palm and a portion of fingers of the hand;

extracting outlines of borders of the palm and a portion of fingers of said hand from the captured image of said hand;

first judging, from a detected position of said extracted outlines in a capture range of the image capture unit and from a number of said extracted outlines within said image capture range whether a capture of said image has been successful, wherein a successful capture is obtained by correctly holding the hand over the capture range;

extracting blood image characteristic data from an image of the palm of the hand capture of which has been successful;

second judging degrees of similarity among a plurality of blood image characteristic data extracted from a plurality of said images; and

registering a plurality of blood image characteristic data with a high degree of similarity in a storage unit.

11. The non-transitory computer-readable medium encoded with a computer program according to claim 10, further causing the computer to execute the steps of:

obtaining an image of the portion of the hand of a body from said image capture unit after registering a plurality of said blood image characteristic data with said high degree of similarity in said storage unit;

extracting the outlines of the image of the portion of said hand and judging, from positions of said extracted outlines within an image capture range of said image capture device and from a number of said outlines within said image capture range, whether said image capture has been successful, of extracting blood image characteristic data from said image capture of which has been successful; and

verifying said blood image characteristic data against a plurality of blood image characteristic data registered in said storage unit for performing trial authentication.

12. A biometrics authentication system for performing individual authentication comprising:

an image capture unit which captures an image of a hand;

a storage unit which stores plural registered characteristic data of a palm of the hand; and

a processing unit which extracts outlines of borders of the palm and a portion of fingers of said hand from captured said image of said hand, judges from detected position of said extracted outlines in a capture range of the image capture unit and the number of said extracted outlines whether a capture of said image has been successful, wherein a successful capture is obtained by correctly holding the hand over the capture range,

wherein said processing unit, at a time of registration, obtains said image of the hand a plurality of times from said image capture unit, judges degrees of similarity among said characteristic data for each of said plurality of images of the hand, and registers in said storage unit a plurality of said characteristic data with a high degree of similarity,

and said processing unit, at a time of individual authentication, said processing unit reads said plurality of characteristic data from said storage unit according to identification information for an individual, and verifies said characteristic data obtained from an image of the hand obtained from said image capture unit against said read plurality of characteristic data,

and wherein said image capture unit has a distance sensor which measures a distance between said image capture unit and said hand,

and said processing unit obtains the image of the palm of said hand from said image capture unit when the distance measured by said distance sensor is within a prescribed range, and changes said prescribed range at said time of said registration and at said time of said individual authentication.

13. A biometrics authentication system for performing individual authentication comprising:

an image capture unit which captures images of a hand;

a storage unit which stores plural registered characteristic data of a palm of the hand; and

a processing unit which extracts outlines of borders of the palm and a portion of fingers of said hand from captured said image of said hand, judges from detected position of said extracted outlines in a capture range of the image capture unit and a number of said extracted outlines whether the hand is correctly held over the capture range, extracts characteristic data from an image of the palm of said hand which is judged to have been held correctly, and registers said characteristic data in said storage unit,

wherein said processing unit obtains said image of the hand a plurality of times from said image capture unit, judges the degree of similarity of said characteristic data at second and subsequent obtain times with reference to said characteristic data at first obtain time and registers said plurality of characteristic data with a high degree of similarity with said characteristic data at the first obtain time and said characteristic data at the first obtain time.