Digital watermarking methods, programs and apparatus
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United States of America Patent
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Nov 29, 2011
Grant Date -
Jan 21, 2010
app pub date -
Sep 18, 2009
filing date -
Jun 24, 2004
priority date (Note) -
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Abstract
The present claims recite various steganographic and digital watermarking methods and apparatus. One claim recites a method of watermarking a representation of a physical object. The method includes: projecting a watermark orientation component onto a physical object; and using a camera or image sensor, capturing an image or video of the physical object including the watermark orientation component as projected thereon. Another claim recites an apparatus including: a light source for projecting a registration component onto a physical object; a camera or sensor for capturing an image or video of the physical object including the registration component as projected thereon; and an electronic processor programmed for encoding a message in the image or video captured by said camera or sensor. Of course, other claims and combinations are provided as well.
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