3D hand profile identification apparatus

• US 4,736,203 A
• Filed: 07/17/1985
• Issued: 04/05/1988
• Est. Priority Date: 07/17/1985
• Status: Expired due to Term

• Current Assignee: Hoechst Marion Roussel Incorporated (Sanofi )
• Original Assignee: Recognition Systems Inc
• Inventors: Sidlauskas, David P.
• Primary Examiner(s): Weldon, Ulysses
• Application Number:
  US06/756,390
• Time in Patent Office: 993 Days
• Field of Search: 340/825.3-825.34, 382/1, 382/2, 382/4, 382/5, 382/9, 382/10, 382/16, 382/28, 382/58, 382/69
• US Class Current: 340/5.53
• CPC Class Codes: G06V 40/10 Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
• CPC Class Codes: G06V 40/11 Hand-related biometrics; Hand pose recognition
• CPC Class Codes: G07C 9/37 using biometric data, e.g. fingerprints, iris scans or voice recognition

Abstract

An identification system is disclosed which determines whether the claimed identity of an individual is in fact the true identity. A three dimensional image of a hand is obtained using a digitizing camera and a pair of orthogonal reflecting surfaces. The image is then compared with a previously recorded hand image for the claimed identity. If the images match, within a selectable tolerance, the person is accepted as the correct individual. If they do not match, the person is rejected. Signalling and/or control apparatus responds to the results of the comparison.

Claims

1. An identification apparatus comprising:

means responsive to retro-reflected radiation;

a pair of orthogonally orientated retro-reflective surfaces in front of which a person'"'"'s hand may be placed for retro-reflecting incident radiation from a source of radiation which is not interrupted by said hand for projecting a single image comprising a plan and profile view of said person'"'"'s hand to said retro-reflected radiation responsive means;

means in said retro-reflected radiation responsive means which is responsive to said image for providing signals corresponding to said plan and profile views;

means responsive to said signals for providing current measurement data from said plan and profile views;

means for comparing said current measurement data with data previously stored in a memory; and

means for providing a signal when said current measurement data and said previously stored data match within a predetermined tolerance.

2. An apparatus according to claim 1 wherein said incident and retro-reflected radiation are coaxial.

3. An apparatus according to claim 1 wherein at least one of said retro-reflective surfaces comprises a reference mark.

4. An apparatus according to claim 3 wherein said reference mark comprises a predetermined non-reflective area on said latter surface.

5. An identification apparatus comprising:

a source of radiation;

first and second orthogonally orientated retro-reflective surfaces for reflecting said radiation;

means for propagating said radiation from said source along a first and a second axis perpendicular to said first and said second surfaces, respectively; and

means responsive to the radiation reflected from each of said surfaces for providing signals corresponding to the intensity of said reflected radiation.

6. An apparatus according to claim 5 wherein the radiation incident on each of said surfaces and the radiation reflected therefrom are coaxial.

7. An apparatus according to claim 5 comprising:

means for comparing said signals with data previously stored in a memory; and

means for providing a signal when there is a predetermined correspondence between said signals and said previosly stored data.

8. An apparatus according to claim 5 wherein said propagating means comprises:

a beam splitter for propagating said radiation from said source along said first axes to said first surface; and

a plane mirror for propagating said radiation from said beam splitter to said second surface along said second axis.