Derivation and quantization of robust non-local characteristics for blind watermarking
First Claim
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1. A system facilitating protection of digital signals, the system comprising:
- a means for processing;
a means for storing, coupled to the means for processing;
a means for obtaining a digital signal, wherein the digital signal comprises multi-dimensional data;
a means for partitioning a digital signal into a plurality of segments by pseudorandomly segmenting the signal using a secret key, and wherein such segments have the ability to overlap;
a means for obtaining a watermark;
a means for watermarking the signal with the watermark using quantization index modulation (QIM), wherein such QIM utilizes non-local characteristics of the signal, and wherein the non-local characteristics comprise statistics representative of one or more pseudorandomly dimensioned segments 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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18 Claims
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1. A system facilitating protection of digital signals, the system comprising:
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a means for processing; a means for storing, coupled to the means for processing; a means for obtaining a digital signal, wherein the digital signal comprises multi-dimensional data; a means for partitioning a digital signal into a plurality of segments by pseudorandomly segmenting the signal using a secret key, and wherein such segments have the ability to overlap; a means for obtaining a watermark; a means for watermarking the signal with the watermark using quantization index modulation (QIM), wherein such QIM utilizes non-local characteristics of the signal, and wherein the non-local characteristics comprise statistics representative of one or more pseudorandomly dimensioned segments of the signal. - View Dependent Claims (2, 3, 4, 5, 6, 17)
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7. A method for facilitating protection of digital signals, the method comprising:
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a step for obtaining a digital signal, wherein the digital signal comprises multi-dimensional data; a step for partitioning the signal into a plurality of segments by pseudorandomly segmenting the signal using a secret key, and wherein the plurality of segments are pseudorandomly positioned using the secret key, such that said segments have the ability to overlap; a step for obtaining a watermark; a step for, using quantization index modulation (QIM), watermarking the signal with the watermark, wherein such QIM utilizes non-local characteristics of the signal, and wherein the non-local characteristics comprise statistics representative of one or more pseudorandomly dimensioned segments of the signal. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 18)
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Specification