摘要
本文提出两种对彩虹全息图进行防伪加密的方法。通过特殊地选择编码器和加密记录的方式.以及利用透镜的傅里叶交换特性,对图象某一部分进行编码加密,可使他人无法进行仿制,从而使其在模压全息防伪商标、标识中具有广泛的应用前景。
Two cryptographic methods for anticounterfeiting of rainbow hologram are proposed in this paper. By specially choosing an encoder and a recording way, and using lens' Fourier transform characture, a special part of image is cryptograp-hicelly coded, so as to can not be imitated. These methods given in this paper can be extensively used for anticounterfeiting marking of embossed hologram.
出处
《激光杂志》
EI
CAS
CSCD
北大核心
1993年第4期176-178,194,共4页
Laser Journal
关键词
傅里叶变换
全息图
防伪标识
anticounterfeiting hologram, Fourier transform hologram, cryptographic security, encoder