Dynamic digital watermark

• US 9,426,328 B2
• Filed: 08/27/2014
• Issued: 08/23/2016
• Est. Priority Date: 08/28/2013
• Status: Active Grant

• Current Assignee: Idemia Identity & Security USA, LLC (Advent International Corporation)
• Original Assignee: Morphotrust USA Incorporated (Advent International Corporation)
• Inventors: Martin, Brian
• Primary Examiner(s): CHANG, JON CARLTON
• Application Number:
  US14/470,540
• Publication Number:
  US 20150063626A1
• Time in Patent Office: 727 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: G06T 1/0071 using multiple or alternating watermarks
• CPC Class Codes: H04N 1/32299 using more than one embedding method
• CPC Class Codes: H04N 1/32304 Embedding different sets of additional information
• CPC Class Codes: H04N 1/32309 in colour image data
• CPC Class Codes: H04N 1/32325 the embedded data being visible
• CPC Class Codes: H04N 1/32352 Controlling detectability or arrangements to facilitate detection or retrieval of the embedded information, e.g. using markers for decoding, detection or retrieval operations H04N1/32149 and subgroups take precedence

Abstract

Some implementations may include a computer-implemented method for applying at least two digital watermarks to a digital document, the method including: receiving a digital document comprising visual contents; generating a first digital watermark to be visually presented at a first time point; generating a second digital watermark to be visually presented at a second time point, the second digital watermark being different from the first digital watermark and the second time point being different from the first time point; and applying both the first digital watermark and second digital watermark to the digital document t.

Claims

1. A computer-implemented method for applying at least two digital watermarks to a digital document, the method comprising:

receiving a digital document comprising visual contents;

generating a first digital watermark to be visually presented at a first time point;

generating a second digital watermark to be visually presented at a second time point, the second digital watermark being different from the first digital watermark and the second time point being different from the first time point; and

applying the first digital watermark and the second digital watermark to the digital document such that the first time point differs from the second time point by an amount shorter than a retina dwell time.

2. The method of claim 1, further comprising:

applying both the first digital watermark and the second digital watermark to form a sequence of digital watermarks capable of providing validation of the digital document.

3. The method of claim 2, further comprising:

applying the first digital watermark and second digital watermark to the digital document to provide authentication of a person holding the digital document.

4. The method of claim 2, further comprising:

linking the sequence of digital watermarks to an entity issuing the digital document.

5. The method of claim 2, further comprising:

linking the sequence of digital watermarks to a person holding the digital document.

6. The method of claim 1, further comprising:

generating one or more additional digital watermark to be visually presented at a respective time points, the one or more digital watermark being different from the first and second digital watermark, and the respective time points being different from the first and second digital watermark.

7. The method of claim 1, further comprising:

applying the first digital watermark such that the first digital watermark is visually presented intermittently according to a first temporal pattern.

8. The method of claim 7, further comprising:

configuring the first temporal pattern to encode information linking an entity issuing the digital document with at least two digital watermarks.

9. The method of claim 8, further comprising:

configuring the first temporal pattern to encode information linking a person holding the generated digital document with at least two digital watermarks.

10. The method of claim 1, further comprising:

applying the second digital watermark such that the second digital watermark is visually presented intermittently according to a second temporal pattern.

11. The method of claim 10, further comprising:

configuring the second temporal pattern to encode information linking an entity issuing the digital document with at least two digital watermarks.

12. The method of claim 10, further comprising:

configuring the second temporal pattern to encode information linking a person holding the generated digital document with at least two digital watermarks.

13. The method of claim 1, wherein generating the first digital watermark further comprises:

generating the first digital watermark to encode information correlatable with data encoded by the second digital watermark.

14. The method of claim 1, wherein generating the second digital watermark further comprises:

generating the second digital watermark to encode information correlatable with data encoded by the first digital watermark.

15. A system for digitizing an identification document, the system comprising at least one computer processor configured to perform the operations of:

receiving a digital document comprising visual contents;

generating a first digital watermark to be visually presented at a first time point;

generating a second digital watermark to be visually presented at a second time point, the second digital watermark being different from the first digital watermark and the second time point being different from the first time point; and

applying the first digital watermark and the second digital watermark to the digital document such that the first time point differs from the second time point by an amount shorter than a retina dwell time.

16. The system of claim 15, wherein the operations further comprise:

applying both the first digital watermark and the second digital watermark to form a sequence of digital watermarks capable of providing validation of the digital document.

17. The system of claim 16, wherein the operations further comprise:

applying the first digital watermark and second digital watermark to the digital document to provide authentication of a person holding the digital document.

18. The system of claim 16, wherein the operations further comprise:

linking the sequence of digital watermarks to an entity issuing the digital document.

19. The system of claim 16, wherein the operations further comprise:

linking the sequence of digital watermarks to a person holding the digital document.

20. The system of claim 15, wherein the operations further comprise:

generating one or more digital watermark to be visually presented at respective time points, the one or more digital watermark being different from the first and second digital watermark, and the respective time points being different from the first and second digital watermark.

21. The system of claim 15, wherein the operations further comprise:

applying the first digital watermark such that the first digital watermark is visually presented intermittently according to a first temporal pattern.

22. The system of claim 21, wherein the operations further comprise:

configuring the first temporal pattern to encode information linking an entity issuing the digital document with at least two digital watermarks.

23. The system of claim 21, wherein the operations further comprise:

configuring the first temporal pattern to encode information linking a person holding the generated digital document with at least two digital watermarks.

24. The system of claim 15, wherein the operations further comprise:

applying the second digital watermark such that the second digital watermark is visually presented intermittently according to a second temporal pattern.

25. The system of claim 24, wherein the operations further comprise:

configuring the second temporal pattern to encode information linking an entity issuing the digital document with at least two digital watermarks.

26. The system of claim 24, wherein the operations further comprise:

configuring the second temporal pattern to encode information linking a person holding the generated digital document with at least two digital watermarks.

27. The system of claim 15, wherein generating the first digital watermark further comprises:

generating the first digital watermark to encode information correlatable with data encoded by the second digital watermark.

28. The system of claim 15, wherein generating the second digital watermark further comprises:

generating the second digital watermark to encode information correlatable with data encoded by the first digital watermark.

29. A non-transitory computer-readable medium, comprising software instructions stored thereon that, when executed by a processor, causes the processor to perform the operations of:

receiving a digital document comprising visual contents;

generating a first digital watermark to be visually presented at a first time point;

generating a second digital watermark to be visually presented at a second time point, the second digital watermark being different from the first digital watermark and the second time point being different from the first time point; and

applying the first digital watermark and the second digital watermark to the digital document such that the first time point differs from the second time point by an amount shorter than a retina dwell time.