Embedding data in halftone images

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United States of America Patent

PATENT NO 10027843
SERIAL NO

15114392

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Abstract

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A data-bearing image (391) is created from a carrier image (371). The carrier image (371) is scaled to produce a scaled image. A clustered-dot halftone screen is applied to the scaled image to produce a halftone image. A resulting number of cells in the halftone image conforms to a cell count (372) that includes a horizontal cell value and a vertical cell value. Payload data is encoded into the halftone image to produce a data-bearing halftone image, including shifting pixel clusters within cells of the halftone image that include pixel clusters.

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Patent Owner(s)

  • HEWLETT-PACKARD COMPANY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gaubatz, Matthew D Seattle, US 62 298
Pollard, Stephen Bristol, GB 46 242
Ulichney, Robert Stow, US 42 41

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