Derivation and quantization of robust non-local characteristics for blind watermarking
First Claim
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1. A method for facilitating the protection of digital signals, the method comprising obtaining a digital signal;
- using quantization index modulation (QIM), detecting whether the signal includes a watermark, wherein such QIM is based upon non-local characteristics of the signal.
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Abstract
An implementation of a technology is described herein for deriving robust non-local characteristics and quantizing such characteristics for blind watermarking of a digital good.
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19 Claims
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1. A method for facilitating the protection of digital signals, the method comprising
obtaining a digital signal; using quantization index modulation (QIM), detecting whether the signal includes a watermark, wherein such QIM is based upon non-local characteristics of the signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. One or more computer-readable media having computer-executable instructions that, when executed by a computer, perform the acts comprising:
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obtaining a digital signal;
using quantization index modulation (QIM), detecting whether the signal includes a watermark, wherein such QIM is based upon non-local characteristics of the signal and the non-local characteristics are representative characteristics of more than a single element of a signal. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A system for facilitating the protection of digital signals, the system comprising means for performing functions comprising:
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obtaining a digital signal;
using quantization index modulation (QIM), detecting whether the signal includes a watermark, wherein such QIM is based upon non-local characteristics of the signal and the non-local characteristics are representative characteristics of more than a single element of a signal. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification