Derivation and quantization of robust non-local characteristics for blind watermarking
First Claim
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1. A method facilitating protection of digital signals, the method comprising:
- normalizing amplitude of a subject digital signal;
transforming the normalized signal;
partitioning the normalized signal transform into segments;
for one or more segments;
calculating statistics of a segment that are representative of that segment;
quantizing such statistics of a segment to generated a quantized value of that segment;
measuring the distance between such statistics of a segment and the quantized value of that segment;
determining whether a watermark is present in the digital signal based upon the quantized values of the one or more segments.
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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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Citations
42 Claims
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1. A method facilitating protection of digital signals, the method comprising:
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normalizing amplitude of a subject digital signal;
transforming the normalized signal;
partitioning the normalized signal transform into segments;
for one or more segments;
calculating statistics of a segment that are representative of that segment;
quantizing such statistics of a segment to generated a quantized value of that segment;
measuring the distance between such statistics of a segment and the quantized value of that segment;
determining whether a watermark is present in the digital signal based upon the quantized values of the one or more segments. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. One or more computer-readable media having computer-executable instructions thereon that, when executed by a computer, perform acts for facilitating protection of digital signals, the acts comprising:
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normalizing amplitude of a subject digital signal;
transforming the normalized signal;
partitioning the normalized signal transform into segments;
for one or more segments;
calculating statistics of a segment that are representative of that segment;
quantizing such statistics of a segment to generated a quantized value of that segment;
measuring the distance between such statistics of a segment and the quantized value of that segment;
determining whether a watermark is present in the digital signal based upon the quantized values of the one or more segments. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method facilitating protection of digital signals, the method comprising:
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partitioning a subject digital signal into segments;
for one or more segments;
calculating statistics of a segment that are representative of that segment;
quantizing such statistics of a segment to generated a quantized value of that segment;
determining whether a watermark is present in the digital signal based upon the quantized values of the one or more segments. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. One or more computer-readable media having computer-executable instructions thereon that, when executed by a computer, perform acts for facilitating protection of digital signals, the acts comprising:
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partitioning a subject digital signal into segments;
for one or more segments;
calculating statistics of a segment that are representative of that segment;
quantizing such statistics of a segment to generated a quantized value of that segment;
determining whether a watermark is present in the digital signal based upon the quantized values of the one or more segments. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42)
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Specification