[특허]Watermarking of data invariant to distortion

Watermarking of data invariant to distortion 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06K-009/00
출원번호	US-0574626 (2009-10-06)
등록번호	US-8098883 (2012-01-17)
발명자 / 주소	Alattar, Adnan M. Stach, John Tian, Jun
출원인 / 주소	Digimarc Corporation
인용정보	피인용 횟수 : 0 인용 특허 : 87

초록 ▼

A data set is transformed to a domain in which values are robust to distortion. The values are then expanded to carry auxiliary data. To recover the data, the data set is transformed into the domain, further transformed to get a set of possibly expanded data, and then processed to extract auxiliary

대표청구항 ▼

1. A computer-implemented method comprising: electronically transforming a data set to a first domain in which data values are more invariant to distortion;electronically transforming the data set from the first domain to a second domain that includes a set of expandable values, wherein transforming the data set from the first domain to the second domain comprises recursively transforming at least one difference value; andmodifying expandable values to include auxiliary data. 2. A non-transitory computer readable medium having instructions stored thereon, the instructions comprising: instructions to transform a data set to a first domain in which data values are more invariant to distortion;instructions to transform the data set from the first domain to a second domain that includes a set of expandable values, wherein transforming the data set from the first domain to the second domain comprises recursively transforming at least one difference value; andinstructions to modify expandable values to include auxiliary data. 3. The method of claim 1, wherein the modifying comprises modifying the expandable values across spectral components. 4. The method of claim 1, wherein the transforming the data set to the first domain comprises quantizing the data set. 5. The method of claim 1, wherein the transforming the data set to the first domain comprises transforming the data set to a plurality of different resolutions, and wherein transforming to the second domain comprises transforming at least two different resolutions. 6. The method of claim 1, wherein the transforming the data set from the first domain to the second domain is applied iteratively to produce different sets of expandable values, and wherein the different sets of expandable values are modified to include the auxiliary data. 7. A computer-implemented method comprising: electronically transforming a data set to a first domain in which data values are more invariant to distortion;electronically transforming the data set from the first domain to a second domain that includes a set of values, wherein transforming the data set from the first domain to the second domain comprises recursively transforming at least one difference value;identifying locations within the set of values that have attributes indicative of carrying auxiliary data through expansion; andextracting the auxiliary data from the set of values. 8. A non-transitory computer readable medium having instructions stored thereon, the instructions comprising: instructions to transform a data set to a first domain in which data values are more invariant to distortion;instructions to transform the data set from the first domain to a second domain that includes a set of values, wherein transforming the data set from the first domain to the second domain comprises recursively transforming at least one difference value;instructions to identify locations within the set of values that have attributes indicative of carrying auxiliary data through expansion; andinstructions to extract the auxiliary data from the set of values. 9. A device comprising: a memory configured to store a data set; anda processor operatively coupled to the memory and configured to: transform the data set to a first domain in which data values are more invariant to distortion;transform the data set from the first domain to a second domain that includes a set of expandable values, wherein the processor transforms the data set from the first domain to the second domain by recursively transforming at least one difference value; andmodify the expandable values to include auxiliary data. 10. The device of claim 9, wherein the processor is configured to modify the expandable values across spectral components. 11. The device of claim 9, wherein the processor transforms the data set to the first domain by quantizing the data set. 12. The device of claim 9, wherein the processor is configured to iteratively transform the data set from the first domain to the second domain to produce different sets of expandable values, wherein the processor is further configured to modify the different sets of expandable values to include the auxiliary data. 13. A device comprising: a memory configured to store a data set; anda processor operatively coupled to the memory and configured to: transform the data set to a first domain in which data values are more invariant to distortion;transform the data set from the first domain to a second domain that includes a set of values, wherein the processor transforms the data set from the first domain to the second domain by recursively transforming at least one difference value;identify locations within the set of values that have attributes indicative of carrying auxiliary data through expansion; andextract the auxiliary data from the set of values.

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연합인증

Watermarking of data invariant to distortion 원문보기

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Watermarking of data invariant to distortion 원문보기

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