Method for ensuring the integrity of image sets
First Claim
Patent Images
1. A method comprising:
- for each of the digital documents in a set of digital documents;
extracting information from the document, incorporating the information into a watermark, and embedding the watermark into at least one other document in the set.
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Abstract
A method which can be utilized for protecting the integrity of a set of digital documents includes, for each of the digital documents in the set, extracting information from the document, incorporating the information into a watermark, and embedding the watermark into at least one other document in the set.
59 Citations
24 Claims
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1. A method comprising:
for each of the digital documents in a set of digital documents;
extracting information from the document, incorporating the information into a watermark, and embedding the watermark into at least one other document in the set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A system comprising:
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a first watermarking component which, for each of the documents in a set of digital documents, derives a digital watermark from information in the document; and
a second watermarking component which embeds the digital watermark in another document in the set. - View Dependent Claims (19, 20, 21, 22)
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23. A method for determining the integrity of a set of digital documents comprising:
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watermarking a set of digital documents comprising, for each of the digital documents in the set;
extracting information from the document, incorporating the information into a watermark, and associating the watermark with at least one other document in the set; and
from the embedded watermark of at least one of the plurality of digital documents, determining at least one of;
whether a document from which information was extracted is missing from the set, whether a document has been unacceptably modified; and
whether a document has been added to the set subsequent to the embedding of the watermarks. - View Dependent Claims (24)
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Specification