发明名称 Information embedding device and program for changing a number of points that exist on sides of a polygon
摘要 Information embedding is performed by extracting vertices constituting a polygon from vector data, and changing a number of points that exist on sides of the polygon based on embedment information. Further, information reading is performed by extracting points existing on the sides of the polygon from the embedment information and embedded vector data, and by reading the embedment information according to a predetermined rule.
申请公布号 US7680296(B2) 申请公布日期 2010.03.16
申请号 US20040558923 申请日期 2004.08.18
申请人 PANASONIC CORPORATION 发明人 INOUE HISASHI;EJIMA MASATAKA;NORIDOMI KENICHI;KATSURA TAKASHI;HORIKAMI SHUGO
分类号 G06K9/00;H04N1/387 主分类号 G06K9/00
代理机构 代理人
主权项
地址