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System and method for embedding information within a printed image using block error diffusion halftoning
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Canon Inc |
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Eastman Kodak Company |
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Hard copy protection and confirmation method
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Xerox Corporation |
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2011-08-30 |
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2013-04-09 |
2015-06-16 |
Massachusetts Institute Of Technology |
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Embedding data in halftone images
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Univ Nat Taipei Technology |
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Digimarc Corporation |
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