彩虹全息图防伪标识的两种加密设计

Two cryptographic designs for anticounterfeiting marking of rainbow hologram

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.