Claims
- 1. A method for creating an identification document having a biometric image, comprising:
identifying a feature location in the biometric image; generating a digital watermark signal; and embedding the digital watermark signal in the biometric image such that the digital watermark location is dependent on the feature location.
- 2. The method of claim 1 wherein the digital watermark signal carries a variable message payload including, at least in part, information related to other information on the identification document.
- 3. The method of claim 2 wherein the digital watermark carries an image signature derived from the biometric image.
- 4. The method of claim 1 wherein the biometric image comprises a facial image.
- 5. The method of claim 4 including dividing the facial image into tiles, calculating image signatures for two or more of the tiles, and embedding the image signatures in two or more of the tiles.
- 6. The method of claim 5 wherein at least one tile boundary is dependent on the feature location.
- 7. The method of claim 1 including calculating two or more image signatures for portions of the biometric image that are dependent on symmetric properties of the biometric image, and embedding the two or more signatures in the biometric image.
- 8. A tangible medium on which is stored instructions for performing the method of claim 1.
- 9. A method of creating an identification document having an image, the method comprising:
generating a first digital watermark signal that carries a variable message payload including information related to information located on the identification document separate from the image; generating a second digital watermark signal that carries an image signature of the image; and embedding the first and second digital watermark signals in the image.
- 10. The method of claim 9 wherein the image signature is derived from a frequency domain transform of the image.
- 11. The method of claim 10 wherein the signature is derived from a DCT transform of the image.
- 12. The method of claim 9 wherein the second digital watermark signal is dependent on the first digital watermark signal.
- 13. The method of claim 9 wherein the first and second digital watermark signals are generated by modulating a pseudorandom carrier signal.
- 14. The method of claim 9 wherein the image is divided into blocks, and each block is embedded with a first and second digital watermark signal.
- 15. A tangible medium on which is stored instructions for performing the method of claim 9.
- 16. The method of claim 9 wherein the identification document is authenticated by comparing an image signature of the image with an image signature extracted from the second digital watermark signal.
- 17. The method of claim 9 wherein the variable message payload includes biometric information derived from the image.
- 18. The method of claim 17 wherein the image comprises a facial image and the biometric information includes facial biometric information derived from the facial image.
- 19. A method of creating an identification document having a biometric image comprising:
deriving biometric information from the biometric image; deriving an image signature that is separate from the biometric information from the biometric image; generating a variable digital watermark message including the biometric information; and embedding a digital watermark in the biometric image such that the digital watermark is dependent on the image signature and carries the variable digital watermark message.
- 20. The method of claim 19 wherein the biometric image comprises a facial image.
- 21. The method of claim 20 wherein the biometric information comprises information used to create a biometric template for facial recognition.
- 22. The method of claim 21 wherein the biometric information includes information about eye location.
- 23. A tangible medium on which is stored software for performing the method of claim 19.
- 24. A method of authenticating an identification document comprising:
extracting biometric information from a machine readable code embedded in the identification document; using the biometric information to generate a biometric template of the bearer of the identification document from a live image captured of the bearer or from a document image captured of a facial image printed on the identification document; and performing a biometric verification using the biometric template.
- 25. The method of claim 24 wherein the machine readable code comprises a digital watermark.
- 26. The method of claim 25 wherein the digital watermark is extracted using a pseudorandom number to decode variable message information.
- 27. The method of claim 24 wherein the biometric information includes information about a face depicted in the facial image, and the biometric template comprises a facial image template used in facial recognition.
- 28. The method of claim 27 wherein the biometric information includes information about eye location.
- 29. A tangible medium on which is stored instructions for performing the method of claim 24.
- 30. The method of claim 24 wherein the biometric information is used to generated a biometric template of the bearer of the identification document from a document image captured of the facial image printed on the identification document.
- 31. A method of performing biometric analysis comprising:
extracting biometric information from a machine readable code embedded in an identification document; using the biometric information to facilitate comparison of biometric information derived from a document image captured of a facial image printed on the identification document with either biometric information derived from a live image captured of a bearer of the document or biometric information stored in a biometric database; and determining validity of the identification document based on the comparison.
- 32. The method of claim 31 wherein the machine readable code comprises a digital watermark embedded in the identification document.
- 33. The method of claim 32 wherein the digital watermark is embedded in the facial image printed on the identification document.
- 34. The method of claim 31 wherein the biometric information comprises facial information.
- 35. A tangible medium on which is stored instructions for performing the method of claim 31.
- 36. A method of performing biometric analysis comprising:
extracting biometric search enhancement information from an identification document; using the biometric search enhancement information to facilitate a search of a biometric database; and determining validity of the identification card based on the search of the biometric database.
- 37. The method of claim 36 wherein the search enhancement information is extracted from a machine readable code in the identification document.
- 38. The method of claim 37 wherein the machine readable code comprises a digital watermark.
- 39. The method of claim 38 wherein the digital watermark is embedded in a facial image on the identification document.
- 40. The method of claim 36 wherein the biometric database comprises a facial image database and the search includes performing facial recognition using a facial image template.
- 41. The method of claim 40 wherein the facial image template is derived from a facial image on the identification document.
- 42. The method of claim 41 wherein the biometric search enhancement information is extracted from a digital watermark embedded in the facial image.
- 43. The method of claim 36 wherein the biometric search enhancement information comprises biometric database binning or segmentation information.
- 44. The method of claim 43 wherein the biometric search enhancement information is carried in a machine readable code on the identification document.
- 45. The method of claim 43 wherein the biometric search information is indexed via a machine readable code in the identification document.
- 46. The method of claim 45 wherein the machine readable code comprises a digital watermark embedded in a facial image on the identification document.
- 47. A tangible medium on which instructions for performing the method of claim 36 are stored.
RELATED APPLICATION DATA
[0001] This patent application is a continuation in part of U.S. patent application Ser. No. 10/158,385, filed May 29, 2002, which is hereby incorporated by reference.
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
10158385 |
May 2002 |
US |
Child |
10449827 |
May 2003 |
US |