Watermarking via quantization of statistics of overlapping regions
First Claim
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1. A computer-readable medium having computer-executable instructions that, when executed by a computer, performs a method facilitating protection of digital goods, the method comprising:
- obtaining a digital good;
transforming the good;
partitioning the transform of the good into a plurality of permissively overlapped regions, wherein the partitioning comprises segmenting the transform into a plurality of overlapped regions;
calculating statistics of one or more the regions of the plurality, so that the statistics of a region are representative of it;
quantizing such statistics;
generating a perceptual-compensation factor, which is an approximate representation a combination of the quantized statistics of the plurality of the regions the generating comprises finding a minimum distance of multiplicative quantization disturbance;
marking the digital good with the perceptual-compensation factor.
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Abstract
An implementation of a technology, described herein, for facilitating watermarking of digital goods. At least one implementation, described herein, performs quantization watermarking based upon semi-global characteristics of multiple regions of the digital good. Such regions are permissively overlapping. The scope of the present invention is pointed out in the appending claims.
103 Citations
11 Claims
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1. A computer-readable medium having computer-executable instructions that, when executed by a computer, performs a method facilitating protection of digital goods, the method comprising:
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obtaining a digital good; transforming the good; partitioning the transform of the good into a plurality of permissively overlapped regions, wherein the partitioning comprises segmenting the transform into a plurality of overlapped regions; calculating statistics of one or more the regions of the plurality, so that the statistics of a region are representative of it; quantizing such statistics; generating a perceptual-compensation factor, which is an approximate representation a combination of the quantized statistics of the plurality of the regions the generating comprises finding a minimum distance of multiplicative quantization disturbance; marking the digital good with the perceptual-compensation factor. - View Dependent Claims (2, 3, 4, 5)
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6. A computer-readable medium having computer-executable instructions that, when executed by a computer, performs a method facilitating protection of digital goods, the method comprising:
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transforming a digital good; partitioning the transform of the good into a plurality regions, wherein the partitioning comprises segmenting the transform into a plurality of overlapped regions; calculating statistics of regions, so that the statistics of a region are representative of it; generating a quantization-noise factor, which is an approximate representation a quantization of the statistics the plurality of regions the generating comprises finding a minimum distance of multiplicative quantization disturbance; marking the digital good with the quantization-noise factor. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification