Title:
EMBEDDING DEVICE, EXTRACTING DEVICE AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2020/116176
Kind Code:
A1
Abstract:
An embedding device for embedding watermark information into a target image comprises a superimposing unit that superimposes, on each of a plurality of areas into which the target image is divided, one of at least two types of features expressed by use of respective pixel values, the embedding device being characterized in that the superimposing unit embeds the watermark information into the target image such that, for each of a plurality of sets each consisting of a prescribed number of ones of the areas, the watermark information is expressed by a pattern determined by the position of each area, in which the feature is embedded, in each set.
Inventors:
IGARASHI ISAMU (JP)
ITO NAOKI (JP)
KATAYAMA ATSUSHI (JP)
ANDO SHINGO (JP)
SAGATA ATSUSHI (JP)
ITO NAOKI (JP)
KATAYAMA ATSUSHI (JP)
ANDO SHINGO (JP)
SAGATA ATSUSHI (JP)
Application Number:
PCT/JP2019/045551
Publication Date:
June 11, 2020
Filing Date:
November 21, 2019
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04N1/32; B41J5/30
Domestic Patent References:
| WO2018155331A1 | 2018-08-30 |
Foreign References:
| JP2009260717A | 2009-11-05 | |||
| JP2008178146A | 2008-07-31 |
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
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