Watermarking via quantization of statistics of overlapping regions
AssigneeMicrosoft Corporation
InventorsRamarathnam Venkatesan, M. Kivanc Mihcak, Mustafa Kesal
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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.
Claims11
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.
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:
- 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.
Dependencies are inferred from the claim text.