Hiding and detecting auxiliary data in media materials and signals
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United States of America Patent
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Mar 29, 2011
Grant Date -
Jul 8, 2010
app pub date -
Oct 13, 2009
filing date -
Nov 18, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present technology relates to steganographically hiding messages in materials such as paper stock, plastic and film. The technology can also be used to encode auxiliary data in imagery, which may be separately marked (e.g., by altering values of digital image pixels), or may simply be formed on a marked material.
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