Apparatus for steganographic embedding of information into colour images
作者： O Int. Prop. Division Kawakami , O Int. Prop. Division Yamamoto , O Int. Prop. Division Sekizawa , Hidekazu C , Haruko C
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参考文章(2)
Roger C O Kenrick Jefferson Limited Hackwood, Copy protection of multi-colour documents ,(1989)
Juergen Dipl-Ing Herrmann, Peter Dipl-Phys Dr Kurowski, Security paper with optically active structures generating a moiré effect ,(1986)