Methods to evaluate images, video and documents

• US 7,400,743 B2
• Filed: 01/10/2007
• Issued: 07/15/2008
• Est. Priority Date: 01/20/1998
• Status: Expired due to Fees

• Current Assignee: Digimarc Corporation
• Original Assignee: Digimarc Corporation
• Inventors: Rhoads, Geoffrey B., Gustafson, Ammon E.
• Primary Examiner(s): Johns; Andrew W
• Application Number:
  US11/621,877
• Publication Number:
  US 20070172097A1
• Time in Patent Office: 552 Days
• Field of Search: 382/100, 382/162, 382/232, 713/176, 358/3.28, 380/287, 380/54
• US Class Current: 382/100
• CPC Class Codes: G06T 1/0071 using multiple or alternating watermarks
• CPC Class Codes: G06T 2201/0051 Embedding of the watermark in the spatial domain
• CPC Class Codes: G06T 2201/0052 Embedding of the watermark in the frequency domain
• CPC Class Codes: G06T 2201/0202 whereby the quality of watermarked images is measured; Measuring quality or performance of watermarking methods; Balancing between quality and robustness
• CPC Class Codes: G06T 2207/30144 Printing quality
• CPC Class Codes: G06T 7/0002 Inspection of images, e.g. flaw detection
• CPC Class Codes: G06T 7/0004 Industrial image inspection
• CPC Class Codes: G07C 9/253 visually
• CPC Class Codes: G07F 7/08 by coded identity card or credit card or other personal identification means without personal verification means G07F7/02
• CPC Class Codes: G07F 7/086 by passive credit-cards adapted therefor, e.g. constructive particularities to avoid counterfeiting, e.g. by inclusion of a physical or chemical security-layer for security documents G07D7/00; for the reading of record-carriers in general G06K7/00; for the design of coded credit-cards G06K19/10
• CPC Class Codes: G07F 7/12 Card verification
• CPC Class Codes: G10L 19/018 Audio watermarking, i.e. embedding inaudible data in the audio signal
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: H04N 1/00002 Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for error detection, error correction or monitoring in digital computers or digital computer components G06F11/00
• CPC Class Codes: H04N 1/00005 relating to image data
• CPC Class Codes: H04N 1/00037 Detecting, i.e. determining the occurrence of a predetermined state H04N1/00031 takes precedence
• CPC Class Codes: H04N 1/00092 relating to the original or to the reproducing medium, e.g. imperfections or dirt detecting properties of a sheet H04N1/00681
• CPC Class Codes: H04N 1/32144 embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
• CPC Class Codes: H04N 1/32149 Methods relating to embedding, encoding, decoding, detection or retrieval operations
• 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 1/32315 : Selecting a particular method from amongst a plurality of methods
• CPC Class Codes: H04N 1/32331 : Fragile embedding or watermarking
• 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

The present invention relates generally to steganographic encoding and/or digital watermarking. In one embodiment, a method is provided including: obtaining an image or video; encoding a first steganographic component in the image or video, wherein the first steganographic component comprises a first set of properties that are designed to be affected in a first manner when transformed from a first color gamut to a second color gamut; and encoding a second steganographic component in the image or video, wherein the first steganographic component comprises a second set of properties that are designed to be affect in a second manner when transformed from the first color gamut to the second color gamut. Other implementations and embodiments are provided and claimed as well.

Claims

1. A method comprising:

obtaining an image or video;

encoding a first steganographic component in the image or video, wherein the first steganographic component comprises a first set of properties that are designed to be affected in a first manner when transformed from a first domain to a second domain; and

encoding a second steganographic component in the image or video, wherein the first steganographic component comprises a second set of properties that are designed to be affected in a second manner when transformed from the first domain to the second domain.

2. The method of claim 1 wherein the first set of properties comprises a signal to noise ratio.

3. The method of claim 1 wherein the second set of properties comprises a signal to noise ratio.

4. The method of claim 1 wherein the second set of properties comprises a signal bias.

5. The method of claim 1 wherein the first set of properties or the second set of properties comprises a power level.

6. The method of claim 1 wherein the first set of properties or the second set of properties comprise at least one property associated with pixels.

7. The method of claim 6 wherein the one property comprises pixel alignment.

8. The method of claim 6 wherein the second set of properties comprises a random assignment of pixels.

9. The method of claim 1 wherein the first set of properties or the second set of properties comprise at least one property associated with grain.

10. The method of claim 1 wherein the first domain or the second domain comprises a transform frequency domain.

11. The method of claim 1 wherein the first domain comprises a first color gamut and the second domain comprises a second color gamut.

12. A method comprising:

obtaining an image or video;

hiding a first component in the image or video, wherein the first component is designed to change in a first manner when transformed from a first domain to a second domain; and

hiding a second component in the image or video, wherein the second component is designed to change in a second manner when transformed from a first domain to a second domain.

13. The method of claim 12 wherein the first domain or the second domain comprises a transform frequency domain.

14. The method of claim 12 wherein the first domain comprises a first color gamut and the second domain comprises a second color gamut.

15. The method of claim 12 wherein said acts of hiding are accomplished with digital watermarking.

16. A method comprising:

obtaining an image or video, the image or video including a first component and a second component hidden therein, wherein the first component is hidden to change in a first manner when transformed from a first domain to a second domain, and the second component is hidden to change in a second manner when transformed from the first domain to the second domain;

analyzing properties associated with the first component and the second component;

determining from at least said act of analyzing whether the image or video has undergone a transformation from the first domain to the second domain.

17. The method of claim 16 wherein the properties comprise a signal to noise ratio.

18. The method of claim 16 wherein the properties comprise a signal bias.

19. The method of claim 16 wherein the properties comprise a power level.

20. The method of claim 16 wherein the properties comprises a random assignment of pixels.

21. The method of claim 16 wherein the first domain or the second domain comprises a transform frequency domain.

22. The method of claim 16 wherein the first domain comprises a first color gamut and the second domain comprises a second color gamut.