Title:
IMAGE INFORMATION PRODUCING APPARATUS AND IMAGE INFORMATION PRODUCING METHOD
Document Type and Number:
WIPO Patent Application WO/2007/064006
Kind Code:
A1
Abstract:
There are included a means (11) for preparing a secret image; a means (12) for performing a
complex conversion of the secret image; a means (13) for synthesizing the complex-converted secret
image into a pseudo-computer hologram; a means (14) for selecting a dither matrix
for the pseudo-computer hologram; a means (15) for preparing a cover image into
which the secret image will be embedded; a means (16) for subjecting the cover image
and pseudo-computer hologram to a dither process; a means (17) for generating an
embedded image; a means (18) for performing a complex conversion of the embedded image;
and a means (19) for reproducing the secret image from the embedded image. Thus,
the complex conversions allow the secret information to be reproduced without
using any optical means.
Inventors:
TANAKA KENICHI (JP)
ISHIZUKI HIDEAKI (JP)
ISHIZUKI HIDEAKI (JP)
Application Number:
PCT/JP2006/324138
Publication Date:
June 07, 2007
Filing Date:
November 28, 2006
Export Citation:
Assignee:
TANAKA KENICHI (JP)
ISHIZUKI HIDEAKI (JP)
ISHIZUKI HIDEAKI (JP)
International Classes:
H04N1/387; G06T1/00; G11C13/04
Foreign References:
| US6044156A | 2000-03-28 | |||
| JP2004214742A | 2004-07-29 | |||
| JP2002351289A | 2002-12-06 |
Attorney, Agent or Firm:
IITAKA, Tsutomu et al. (Ueno-Suzuki Bldg. 7th Floor 16-3, Ueno 3-Chom, Taito-Ku Tokyo 05, JP)
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