Title:
ELECTRONIC WATERMARK EMBEDDING DEVICE
Document Type and Number:
WIPO Patent Application WO/2008/035394
Kind Code:
A1
Abstract:
Information embedded in a document image is converted to a watermark symbol sequence expressed
by a dot pattern, each watermark symbol is embedded in a subject embedding region,
and embedding advisability is judged by checking whether it is detected. As
a result, the watermark symbol is embedded in a region where embedding is possible. Further,
the watermark symbol sequence is divided into a plurality of blocks, which are
embedded in a document image as a plurality of watermark packets.
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Inventors:
ANAN, Taizo (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 2118588, JP)
阿南 泰三 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通株式会社内 Kanagawa, 2118588, JP)
KURAKI, Kensuke (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 2118588, JP)
倉木 健介 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通株式会社内 Kanagawa, 2118588, JP)
MASUI, Motoo (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 2118588, JP)
阿南 泰三 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通株式会社内 Kanagawa, 2118588, JP)
KURAKI, Kensuke (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 2118588, JP)
倉木 健介 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通株式会社内 Kanagawa, 2118588, JP)
MASUI, Motoo (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 2118588, JP)
Application Number:
JP2006/318492
Publication Date:
March 27, 2008
Filing Date:
September 19, 2006
Export Citation:
Assignee:
FUJITSU LIMITED (1-1 Kamikodanaka 4-chome, Nakahara-ku Kawasaki-sh, Kanagawa 88, 2118588, JP)
富士通株式会社 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 Kanagawa, 2118588, JP)
ANAN, Taizo (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 2118588, JP)
阿南 泰三 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通株式会社内 Kanagawa, 2118588, JP)
KURAKI, Kensuke (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 2118588, JP)
倉木 健介 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通株式会社内 Kanagawa, 2118588, JP)
富士通株式会社 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 Kanagawa, 2118588, JP)
ANAN, Taizo (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 2118588, JP)
阿南 泰三 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通株式会社内 Kanagawa, 2118588, JP)
KURAKI, Kensuke (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 2118588, JP)
倉木 健介 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通株式会社内 Kanagawa, 2118588, JP)
International Classes:
H04N1/387; H04N1/387
Attorney, Agent or Firm:
OSUGA, Yoshiyuki (3rd Fl, Nibancho Bldg.8-20, Nibancho, Chiyoda-ku, Tokyo 84, 1020084, JP)
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