Error processing of steganographic message signals

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United States of America Patent

PATENT NO 8184849
APP PUB NO 20110158468A1
SERIAL NO

12831116

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Abstract

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A form of error processing is used to decode steganographic messages embedded in image and audio signals in the presence of distortion, which tends to introduce errors in steganographic data communication. Content signals with auxiliary embedded data are analyzed to detect embedded message signals. Confidence values are assigned to the message signals and used to ascertain whether a message has been accurately detected. Error processing enables accurate message extraction in the presence of “soft errors” in the embedded message signal. This error processing enables more effective recovery of the steganographic message from content signals that undergo distortion and/or loss transformations after being embedded with steganographic data.

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Patent Owner(s)

Patent OwnerAddress
DIGIMARC CORPORATION9405 SW GEMINI DRIVE BEAVERTON OR 97008

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Rhoads, Geoffrey B West Linn, US 694 76423

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