Signal processing utilizing host carrier information

• US 7,978,875 B2
• Filed: 08/11/2009
• Issued: 07/12/2011
• Est. Priority Date: 03/19/1999
• Status: Expired due to Fees

• Current Assignee: Digimarc Corporation
• Original Assignee: Digimarc Corporation
• Inventors: Gustafson, Ammon E., Sharma, Ravi K., Rhoads, Geoffrey B.
• Primary Examiner(s): Tabatabai; Abolfazl
• Application Number:
  US12/539,093
• Publication Number:
  US 20090296983A1
• Time in Patent Office: 700 Days
• Field of Search: 382/100.232, 382/240, 713/176, 713/179, 380/51, 380/54, 380/210, 380/252, 380/287, 370522-529, 283/72, 283 74- 81, 283/85, 283/93, 283/113, 283/901, 283/902, 358/3.28
• US Class Current: 382/100
• CPC Class Codes: G06T 1/0071 using multiple or alternating watermarks
• CPC Class Codes: G06T 1/0078 using multiple thresholds
• CPC Class Codes: G06T 2201/0065 Extraction of an embedded watermark; Reliable detection
• CPC Class Codes: H04N 1/32149 Methods relating to embedding, encoding, decoding, detection or retrieval operations
• CPC Class Codes: H04N 1/32187 with selective or adaptive application of the additional information, e.g. in selected frequency coefficients
• CPC Class Codes: H04N 1/32235 in highly textured regions
• CPC Class Codes: H04N 1/3224 in edge regions
• CPC Class Codes: H04N 2201/3233 of authentication information, e.g. digital signature, watermark
• CPC Class Codes: H04N 2201/327 which are undetectable to the naked eye, e.g. embedded codes

Abstract

The present invention generally relates to processing audio, video and images. One claim recites a method including: obtaining media signal comprising a steganographic signal hidden therein; utilizing a programmed electronic processor, selecting portions of the media signal for steganographic signal detection, wherein the subset of the media signal is selected based on at least one or more predetermined probability factors, in which a probability factor comprises a selection criteria or rule to identify portions of the media signal which have a higher likelihood of including a steganographic signal relative to other portions of the media signal; and utilizing a programmed electronic processor, analyzing selected portions of the media signal to obtain the steganographic signal. Of course, other claims and combinations are provided as well.

Claims

1. A method comprising:

obtaining a media signal comprising a steganographic signal hidden therein;

selecting, using a processor, portions of the media signal for steganographic signal detection, wherein the portions of the media signal are selected based on at least one or more predetermined probability factors, wherein a probability factor comprises a selection criteria or rule to identify portions of the media signal which have a higher likelihood of including a steganographic signal relative to other portions of the media signal; and

analyzing, using the processor, selected portions of the media signal to obtain the steganographic signal.

2. The method of claim 1, wherein the media signal comprises imagery, video, or audio.

3. The method of claim 1, wherein at least one probability factor utilizes a host media signal information, wherein the host medical signal information is independent of the steganographic signal.

4. The method of claim 1, further comprising inhibiting use of the media signal based on the steganographic signal.

5. The method of claim 1, wherein the method is carried out in real time as the media signal is received.

6. The method of claim 1, wherein selecting portions of the media signal utilizes selection criteria based at least in part on detecting portions of the media signal with a floating segmentation of the signal.

7. The method of claim 1, wherein the probability factors are independent of the steganographic signal.

8. A computer readable medium having instructions stored thereon, the instructions comprising:

instructions to obtain a media signal comprising a steganographic signal hidden therein;

instructions to select portions of the media signal for steganographic signal detection, wherein the portions of the media signal are selected based on at least one or more predetermined probability factors, wherein a probability factor comprises a selection criteria or rule to identify portions of the media signal which have a higher likelihood of including a steganographic signal relative to other portions of the media signal; and

instructions to analyze selected portions of the media signal to obtain the steganographic signal.

9. The computer-readable medium of claim 8, wherein the probability factors are independent of the steganographic signal.

10. The computer-readable medium of claim 8 wherein the media signal comprises imagery, video, or audio.

11. The computer-readable medium of claim 8, wherein at least one probability factor utilizes host media signal information, wherein the host media signal information is independent of the steganographic signal.

12. The computer-readable medium of claim 8, further comprising instructions to inhibit use of the media signal based on the steganographic signal.

13. The computer-readable medium of claim 8, wherein the instructions to select portions of the media signal utilize selection criteria based at least in part on detecting portions of the media signal with a floating segmentation of the signal.

14. An apparatus comprising:

a memory configured to store a media signal, wherein the media signal comprises a steganographic signal hidden therein; and

a processor configured to;

select portions of the media signal for steganographic signal detection, wherein the portions of the media signal are selected based on at least one or more predetermined probability factors, wherein a probability factor comprises a selection criteria or rule to identify portions of the media signal which have a higher likelihood of including a steganographic signal relative to other portions of the media signal; and

analyze the selected portions of the media signal to obtain the steganographic signal.

15. The apparatus of claim 14, wherein the media signal comprises imagery or video.

16. The apparatus of claim 14, wherein the media signal comprises audio.

17. The apparatus of claim 14, wherein the processor is further configured to inhibit use of the media signal based on the steganographic signal.

18. The apparatus of claim 14, wherein the processor is configured to select portions of the media signal utilizing selection criteria based at least in part on detecting portions of the media signal with a floating segmentation of the signal.

19. The apparatus of claim 14, wherein the probability factors are independent of the steganographic signal.

20. The apparatus of claim 14, wherein a probability factor utilizes host media signal information, wherein the host media signal information is independent of the steganographic signal.