Encoding device, decoding device, and printed matter

Image analysis – Applications

Reexamination Certificate

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C358S003280, C358S539000

Reexamination Certificate

active

07664291

ABSTRACT:
In an encoding device that creates an image in which data is embedded, an embedding unit divides an image into a plurality of blocks, and embeds data in the image based on a difference in value of characteristics of adjacent blocks; and a restriction information recording unit records use restriction information that restricts use of embedded data.

REFERENCES:
patent: 6175639 (2001-01-01), Satoh et al.
patent: 6215421 (2001-04-01), Kondo et al.
patent: 6700989 (2004-03-01), Itoh et al.
patent: 2003/0187798 (2003-10-01), McKinley et al.
patent: 2004/0234139 (2004-11-01), Moroo et al.
patent: 2005/0069171 (2005-03-01), Rhoads et al.
patent: 2005/0180596 (2005-08-01), Abe et al.
patent: 1 480 163 (2004-11-01), None
patent: 2002-260099 (2002-09-01), None
patent: 2004-349879 (2004-12-01), None
patent: 2005-117154 (2005-04-01), None
Christoph Dautzenberg, “Watermarking images”, Department of Microelectronics and Electrical Engineering, Trinity College Dublin, Oct. 1994.

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