Assessment of camera phone distortion for digital watermarking

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United States of America Patent

PATENT NO 9697578
SERIAL NO

14579371

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The present disclosure relates generally to cell phones and cameras, and to digital watermarking involving such cell phones and cameras. One claim recites a method comprising: measuring distortion introduced by a cell phone camera; using a programmed electronic processor, quantifying the distortion; and providing quantified distortion as feedback to adjust a digital watermark embedding process in view of the distortion introduced by the cell phone camera. The act of quantifying distortion may include, e.g., quantifying a spatial frequency response (SFR) of the cell phone camera. Of course, other claims and combinations are provided too.

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First Claim

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Patent Owner(s)

  • DIGIMARC CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gurijala, Aparna R Beaverton, US 9 115
Reed, Alastair M Lake Oswego, US 182 7730

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