Method and apparatus for uniquely identifying individuals by particular physical characteristics and security system utilizing the same

• US 4,975,969 A
• Filed: 10/22/1987
• Issued: 12/04/1990
• Est. Priority Date: 10/22/1987
• Status: Expired due to Fees

• Current Assignee: Peter Tal
• Original Assignee: Peter Tal
• Inventors: Tal, Peter
• Primary Examiner(s): Boudreau, Leo H.
• Assistant Examiner(s): COUSO, YON JUNG
• Application Number:
  US07/112,380
• Time in Patent Office: 1,139 Days
• Field of Search: 382/2, 382/5, 340/825.34, 340/825.33, 364/413.02, 73/629, 128/660, 128/774
• US Class Current: 382/116
• CPC Class Codes: A61B 5/1176 Recognition of faces
• CPC Class Codes: G06V 40/171 Local features and components; Facial parts eye characteristics G06V40/18; Occluding parts, e.g. glasses; Geometrical relationships
• CPC Class Codes: G07C 9/253 visually

Abstract

Method, apparatus and security system for uniquely identifying individual by their particular physical characteristics are provided. In particular, facial parameters which are defined as being the distances between identifiable points on the human face, and/or ratios of the facial parameters can be used to identify an individual as the parameters for each individual are unique. Thus, by coding the parameter and/or parameter ratio information of an individual on a card, and by scanning the face of the presenter of that card to obtain parameter and/or parameter ratio information of the presenter, a determination can be made as to whether the presenter is that individual whose information is on the card. Particular parameters such as the distance between the eye retinae, the distance from each eye retinae to the nose bottom and to the mouth center, and the distance from the nose bottom to the mouth center are set forth, as they may be particularly defined due to the shadowed definable points at each end.

Claims

1. A method for determining whether a person presenting an identification card which has stored thereon an indication of at least one ratio of at least a first and second facial parameter of an individual, is the individual whose facial parameter ratio indication is stored on said card, said first facial parameter comprising the distance from a first identifiable location to a second identifiable location on said individual'"'"'s head, and said second facial parameter comprising the distance from a third identifiable location on said individual'"'"'s head to one of said first, said second, and a fourth identifiable location on said individual'"'"'s head, said method comprising:

(a) obtaining an indication of at least the value of one ratio of first and second facial parameters of said person presenting said identification card, said obtained indication corresponding to at least said indication of said ratio stored on said identification card; and

(b) comparing the indication of the value of said stored ratio with the indication of the value of said ratio obtained of said person presenting said card.

2. A method according to claim 1, wherein:

said first and second identifiable locations are the centers of the retinae of the individual.

3. A method according to claim 2, wherein:

said at least first and second facial parameters includes at least the distance between eye retina centers, and the distance between one of the right eye and left eye retina centers and the nose bottom, and

said at least one ratio includes the ratio between the distance between the eye retina centers, and the distance between one of the right eye and left eye retina centers and the nose bottom.

4. A method according to claim 2, wherein:

said at least first and second facial parameters comprises six facial parameters including the distance between eye retina centers, the distance between the left eye retina center and the mouth center, the distance between the left eye retina center and the nose bottom, the distance between the right eye retina center and the mouth center, the distance between the right eye retina center and the nose bottom, and the distance between the mouth center and the nose bottom.

5. A method according to claim 4, wherein:

said at least one facial parameter ratio comprises

the ratio between the distance between the eye retina centers and the distance between the right eye retina center and the mouth center,

The ratio between the distance between the eye retina centers and the distance between the left eye retina center and the mouth center,

the ratio between the distance between the eye retina centers and the distance the left eye retina center and the nose bottom,

the ratio between the distance between the eye retina centers and the distance the right eye retina center and the nose bottom, and

the ratio between the distance between the eye retina centers and the distance betweeen the mouth center and the nose bottom.

6. A method according to claim 1, wherein:

said at least one stored ratio of facial parameters of said individual is obtained from at least a frontal scan of said individual, and said at least one ratio of parameters obtained of said person presenting said card is obtained from at least a frontal scan of said person.

7. A method according to claim 6, wherein:

said frontal scans of said individual and said person are taken at an upwards angle.

8. A method according to claim 1, wherein:

said at least one stored ratio of facial parameters of said individual is obtained from at least a scan of the profile of said individual, and said at least one ratio of parameters obtained of said person presenting said card is obtained from at least a scan of the profile of said person.

9. A method according to claim 1, wherein said identification card contains at least one facial parameter length of said individual, further comprising:

(c) obtaining an indication of at least one facial parameter length of said person presenting said identification card, said obtained indication corresponding to at least said indication of said length stored on said identification card; and

(d) comparing the indication of the value of said stored length with the indication of the value of said length obtained from a scan of said person presenting said card.

10. A method according to claim 9, further comprising:

(e) prior to step (d), normalizing one of said indication of the value of said stored length and said indication of the value of said length obtained from a scan prior to comparing said indications.

11. A method according to claim 10, where said card further includes an indication of the distance at which the camera which was used to obtain said at least one parameter length was located relative to said invididual upon obtaining said parameter length, wherein:

said normalizing step includes determining the distance between a camera used in said obtaining step (c) and said person presenting said identification card.

12. A method accordin to claim 10, wherein

said normalizing step includes taking a ratio of a first facial parameter length of said individual and said person, and using said ratio as a normalizing factor.

13. A method according to claim 9, wherein, said at least one facial parameter length of said individual comprises at least two facial parameter lengths, and said obtained indications of said person comprises at least two facial parameter lengths, wherein:

said comparing of step (d) comprises

taking the ratio of the corresponding first facial parameter lengths of said individual and said person,

taking the ratio of the corresponding second facial parameter lengths of said individual and said person,

comparing said taken ratios, and

establishing identification if said ratios are substantially identical.

14. A method according to claim 1, wherein said identification card includes indications of additional identification information regarding said individual other than facial parameter ratios and facial parameter lengths, further comprising:

(c) obtaining from said person presenting said identification card information corresponding to said additional identification information on said card; and

(d) comparing indications of the information obtained in step (c) with the indications of said additional identification information on said card.

15. A method according to claim 14, wherein:

said additional identification information includes at least one of a group consisting of code number information, written signature information, and voice signature information.

16. A method for determining whether a person presenting an identification card which has stored thereon an indication of at least one facial parameter length of an individual, is the individual whose facial parameter length is stored on said card, said facial parameter length comprising the distance from a first identifiable location to a second identifiable location on said individual'"'"'s head, said method comprising:

(a) obtaining an indication of at least the value of one facial parameter length of said person presenting said identification card, said obtained indication corresponding to at least said indication of said facial parameter length stored on said identification card; and

(b) comparing the indication of the value of said stored facial parameter length with the indication of the value of said facial parameter length obtained of said person presenting said card,

wherein said first and second identifiable locations are the centers of the retinae of the individual.

17. A method according to claim 16, further comprising:

(c) normalizing, prior to comparing said indications, one of said indication of the value of said stored length and said indication of the value of said length obtained from a scan.

18. A method according to claim 17, where said card further includes an indication of the distance at which a camera which was used to obtain said at least one parameter length was located relative to said individual upon obtaining said parameter length, wherein:

said normalizing step includes determining the distance between a camera used in said obtaining step (b) and said person presenting said identification card.

19. A method according to claim 17, wherein

said normalizing step includes taking a ratio of corresponding first facial parameter lengths of said individual and said person, and using said ratio as a normalizing factor.

20. A method according to claim 16, wherein, said at least one facial parameter length of said individual comprises at least two facial parameter lengths, and said obtained indications of said person comprises at least two facial parameter lengths, wherein:

said comparing of step (b) comprises

taking the ratio of the corresponding first facial parameter lengths of said individual and said person,

taking the ratio of the corresponding second facial parameter lengths of said individual and said person,

comparing said taken ratios, and

establishing identification if said ratios are substantially indentical.

21. A method according to claim 16, wherein said identification card includes indications of additional identification information regarding said individual other than facial parameter lengths, further comprising:

(c) obtaining from said person presenting said identification card information corresponding to said additional identification information on said card; and

(d) comparing indications of the information obtained in step (c) with the indications of said additional indentification information on said card.

22. A method according to claim 21, wherein:

said additional identification information includes at least one of a group consisting of facial parameter ratio information, code number information, written signature information, and voice signature information.

23. A method for determining whether a person presenting an identification card which has stored thereon an indication of at least one facial parameter length of an individual, is the individual whose facial parameter length is stored on said card, said facial parameter length comprising the distance from a first identifiable location to a second identifiable location on said individual'"'"'s head, said method comprising:

(a) obtaining an indication of at least the value of one facial parameter length of said person presenting said identification card, said obtained indication corresponding to at least said indication of said facial parameter length stored on said identification card; and

(b) comparing the indication of the value of said stored facial parameter length with the indication of the value of said facial parameter length obtained of said person presenting said card,

wherein said at least one facial parameter is chosen from a group consisiting of the distance between eye retina centers, the distance between the left eye retina center and the mouth center, the distance between the left eye retina center and the nose bottom, the distance between the right eye retina center and the mouth center, and the distance between the right eye retina center and the nose bottom.

24. A method according to claim 23, further comprising:

(c) normalizing, prior to comparing said indications, one of said indication of the value of said stored length and said indication of the value of said length obtained from a scan.

25. A method according to claim 24, where said card further includes an indication of the distance at which a camera which was used to obtain said at least one parameter length was located relative to said individual upon obtaining said parameter length, wherein:

said normalizing step includes determining the distance between a camera used in said obtaining step (b) and said person presenting said identification card.

26. A method according to claim 24, wherein

said normalizing step includes taking a ratio of corresponding first facial parameter lengths of said individual and said person, and using said ratio as a normalizing factor.

27. A method for identifiying an individual, comprising:

(a) via imaging at least a portion of said individual'"'"'s head, obtaining an indication of

(1) a ratio of a first and second facial parameter of said individual, said first facial parameter comprising the distance from a first identifiable location to a second indentifiable location on the individual'"'"'s head, and said second facial parameter comprising the distance from a third ientifiable location on the individual'"'"'s head to one of said first, said second, and a fourth identifiable location on the individual'"'"'s head;

(b) storing on a storage medium values indicative of said ratio of said first and second facial parameters of said individual;

(c) upon attempting to identify a person requesting access to a secure system, obtaining an indication of the value of a ratio of first and second facial parameters of said person requesting access corresponding to at least said ratio stored on said storage medium; and

(d) comparing the indications of the value of said stored ratio with the indication of the value of said ratio obtained of said person requesting access.

28. A method for identifying an individual according to claim 27, wherein:

said first and second identifiable locations are the centers of the retinae of the individual.

29. A method for indentifying an individual according to claim 28, wherein:

said ratio is the ratio between the distance between the eye retina centers and the distance between the right eye retina center and the nose bottom.

30. A method according to claim 28, wherein:

five facial parameter ratios are found including

the ratio between the distance between the eye retina centers and the distance between the right eye retina center and the mouth center,

the ratio between the distance between the eye retina centers and the distance between the left eye retina center and the mouth center,

the ratio between the distance between the eye retina centers and the distance the left eye retina center and the nose bottom,

the ratio between the distance between the eye retina centers and the distance the right eye retina center and the nose bottom, and

the ratio between the distance between the eye retina centers and the distance between the mouth center and the nose bottom.

31. A method according to claim 27, wherein:

said stored ratio of facial parameters of said individual is obtained from at least one frontal scan of said individual, and said ratio of parameters obtained of said person presenting said card is obtained from at least a frontal scan of said person.

32. A method according to claim 31, wherein:

said frontal scans of said individual and said person are taken at an upwards angle.

33. A method according to claim 27, wherein said identification card includes indications of additional identification information regarding said individual other than facial parameter distances and facial parameter ratios, further comprising:

(e) obtaining from said person presenting said identification card information corresponding to said additional identification information on said card; and

(f) comparing indications of the information obtained in step (e) with the indications of said additional identification information on said card.

34. A method according to claim 33, wherein:

said additional identification information includes at least one of a group consisting of code number information, written signature information, and voice signature information.

35. An identification card having indications readable by a card reading means, comprising:

a card capable of insertion into said card reading means, said card including information storage means, said information storage means storing and indication of a ratio of a first and second facial parameter of said individual,

said first facial parameter comprising the distance from a first identifiable location to a second identifiable location on the individual'"'"'s head, and said second facial parameter comprising the distance from a third identifiable location on the individual'"'"'s head to one of said first, said second, and a fourth identifiable location on the individual'"'"'s head.

36. An identification card according to claim 35, wherein:

at least five facial parameter ratios are stored including,

the ratio between the distance between the eye retina centers and the distance between the right eye retina center and the mouth center,

the ratio between the distance between the eye retina centers and the distance between the left eye retina center and the mouth center,

the ratio between the distance between the eye retina centers and the distance the left eye retina center and the nose bottom,

the ratio between the distance between the eye retina centers and the distance the right eye retina center and the nose bottom, and

the ratio between the distance between the eye retina centers and the distance between the mouth center and the nose bottom.

37. An identification card according to claim 35, wherein:

said stored ratio of facial parameters of said individual is obtained from at least a frontal scan of said individual.

38. An identification card according to claim 37, wherein:

said frontal scan of said individual was taken at an upwards angle.

39. An identification card according to claim 35, wherein:

said stored facial parameter of said individual was obtained from at least a frontal scan of said individual.

40. An identification card according to claim 35, wherein:

said information storage means further stores an indication of the distance at which a camera which was used to obtain said parameter distance was located relative to said individual upon obtaining said parameter distance.

41. An identification card according to claim 35, wherein:

said information storage means further stores an indication of additional identification information including at least one of a group consisting of code number information, written signature information, and voice signature information.

42. An identification card according to claim 35, wherein:

said information storage means is one of a magnetic strip laminated onto said card, and an integrated circuit imbedded in said card.

43. An identification card having indications readable by a card reading means, comprising:

a card capable of insertion into said card reading means, said card including information storage means, said information storage means storing an indication of at least a first facial parameter of an individual, said first facial parameter comprising the distance from a first identifiable location to a second identifiable location on the individual'"'"'s head,

said first and second identifiable locations being the centers of the eye retinae of the individual.

44. Ann identification card according to claim, 43 wherein:

at least six facial parameters are stored including the distance between eye retina centers, the distance between the left eye retina center and the mouth center, the distance between the left eye retina center and the nose bottom, the distance between the right eye retina center and the mouth center, the distance between the right eye retina center and the nose bottom, and the distance between the mouth center and the nose bottom.

45. A security system for determining whether the identity of a person attempting to gain entry to a port with an identification card is the same as the owner of said identification card, said security system comprising:

(a) a card accepting and reading means for accepting and reading an identification card containing indications of

a ratio of a first and second facial parameter of said owner, said first facial parameter comprising the distance from a first identifiable location to a second identifiable location on said owner'"'"'s head, and said second facial parameter comprising the distance from a third identifiable location on said owner'"'"'s head to one of said first, said second and a fourth identifiable location on the owner'"'"'s head;

(b) a camera means for scanning the face of said person inserting said identification card into said card accepting means; and

(c) information processing means for obtaining information from said camera means, for processing said obtained information to determine an indication of a ratio of a first and second facial parameter of said person, wherein said facial parameter ratio for said person corresponds to said ratio for said owner, and for comparing said indications obtained and processed by said information processing means to said indication on said card read by said card accepting and reading means.

46. A security system according to claim 45, wherein said identification card includes an identification card number, further comprising:

(d) data base storage means for storing

a first list of card identification numbers barred from said security system,

wherein said card accepting and reading means can read said card identification number, and wherein said information processing means is connected to said data base storage means and is arranged to compare the identification card number of said person with said first list.

47. A security system according to claim 46, further comprising:

(e) data communication means for connecting said data base storage means to a central data base storage means, wherein

said information processing means at least partially obtains said first from said central data base storage means via said data communication means.

48. A security system according to claim 45, further comprising:

(d) illumination means for illuminating the face of said person upon an attempt of said person to gain entry to said port.

49. A security system according to claim 48, wherein:

said illumination means includes infrared ray means.

50. A security system according to claim 45, further comprising:

(d) distance determination means for determining the distance between said camera means and said person.

51. A security system according to claim 45, wherein:

at least five facial parameter ratios are contained including,

the ratio between the distance between the eye retina centers and the distance between the right eye retina center and the mouth center,

the ratio between the distance between the eye retina centers and the distance between the left eye retina center and the mouth center,

the ratio between the distance between the eye retina centers and the distance the left eye retina center and the nose bottom,

the ratio between the distance between the eye retina centers and the distance the right eye retina center and the nose bottom, and

the ratio between the distance between the eye retina centers and the distance between the mouth center and the nose bottom.

52. A security system according to claim 51, wherein:

said camera is further arranged to obtain a profile scan of the face of said person.

53. A security system according to claim 45, wherein:

said camera is arranged to obtain a frontal scan of the face of said person.

54. A security system according to claim 53, wherein:

said camera is further arranged to obtain said frontal scan at an upwards angle.

55. A security system according to claim 45, wherein said identification card includes an identification card number, further comprising:

(d) data base storage means for storing a list of card identification numbers permitted access to said security system,

wherein said card accepting and reading means can read said card identification number, and wherein said information processing means is connected to said data base storage means and is arranged to compare the identification card number of said person with said list of card identification numbers permitted access to said security system.

56. A security system according to claim 55, further comprising:

(e) data communication means for connecting said data base storage means to a central data base storage means, wherein

said information processing means at least partially obtains said list of card identification number permitted access to said security system from said central data base storage means via said data communication means.

57. A security system for determining whether the identity of a person attempting to gain entry to a port with an identification card is the same as the owner of said identification card, said security system comprising:

(a) a card accepting and reading means for accepting and reading an identification card containing indications of a least a first facial parameter of said owner, said first facial parameter comprising the distance from a first identifiable location to a second identifiable location on said owner'"'"'s head,

said first and second identifiable locations being the centers of the eye retinae of the owner;

(b) a camera means for scanning the face of said person inserting said identification card into said card accepting means; and

(c) information processing means for obtaining information from said camera means, for processing said obtained information to determine an indication of at least said first facial parameter of said person, wherein said first facial parameter for said person corresponds to said for said owner, and for comparing said indications obtained and processed by said information processing means to said indications on said card read by said card accepting and reading means.

58. A security system according to claim 57, wherein:

at least six facial parameters are contained including the distance between eye retina centers, the distance the eye retina center and the mouth center, the distance between the left eye retina center and the bottom, the distance between the right eye retina center and the mouth center, the distance between the right eye retina center and the nose bottom, and the distance between the mouth center and the nose bottom.

59. A method for identifying an individual, comprising:

(a) via imaging at least a portion of said individual'"'"'s head, obtaining an indication of a facial parameter distance of said individual;

(b) storing on a storage medium a value indicative of said facial parameter distance;

(c) upon attempting to identify a person requesting access to a secure system, obtaining an indication of a facial parameter distance of said person corrresponding to said facial parameter distance value stored on said storage medium; and

(d) comparing the indication of the value of said stored parameter distance with the parameter distance of said person requesting access, wherein

said facial parameter distance of said individual is the distance between first and second identifiable locations on said individual'"'"'s head, said first and second identifiable locations being the centers of the retinae of the individual.

60. A method for identifying an individual according to claim 59, wherein:

six facial parameters are obtanined including the distance betweeen eye retina centers, the distance between the left eye retina center and the mouth center, the distance between the left eye retina center and the nose bottom, the distance between the right eye retina center and the mouth center, the distance between the right eye retina center and the nose bottom, and the distance between the mouth center and the nose bottom.

61. A method according to claim 59, further comprising:

(e) prior to step (d), normalizing said indication of the value of said stored parameter distance prior to comparing said indications.

62. A method according to claim 61, where said card further includes an indication of the distance at which the camera which was used to obtain said at least one parameter distance was located relative to said individual upon obtaining said parameter distance, wherein:

said normalizing step includes determining the distance between a camera used in said obtaining step (c) and said person presenting said identification card.

63. A method according to claim 59, wherein, two facial parameter distances of said individual and said person are obtained, wherein:

said comparing of step (d) comprises

taking the ratio of corresponding first facial parameter distances of said individual and said person,

comparing said taken ratios, and

establishing identification if said ratios are substantially identical.