论文部分内容阅读
在研究双随机相位数据加密技术的基础上,结合数字全息技术和印刷技术的特点,提出了一种新的同轴菲涅耳全息标识防伪方法,利用双随机相位加密复数数据信息(物光信息),与参考光叠加形成同轴全息图像。理论分析了同轴菲涅耳全息方法能有效地恢复原始图像数据,并对加密的同轴菲涅耳全息图像的强抗位压缩性能进行了仿真,最后通过打印和扫描对同轴菲涅耳全息标识的防伪功能进行了验证。结果表明,该全息标识防伪方法具有强的抗位压缩能力,可以通过逆菲涅耳变换和多重解密密钥恢复原始认证信息,是一种十分有效的全息标识。该全息标识方法可通过可变数据印刷技术印制在证件等印刷品中作为个性化防伪标识。
Based on the research of double random phase data encryption technology and combining the characteristics of digital holography and printing technology, a new anti-counterfeit method of coaxial Fresnel holographic identification is proposed. The double random phase is used to encrypt complex data information ), And the reference light superimposed to form a coaxial holographic image. It is theoretically analyzed that the coaxial Fresnel holographic method can effectively recover the original image data and simulate the strong anti-bit compression performance of the encrypted coaxial Fresnel holographic image. Finally, by printing and scanning the coaxial Fresnel Holographic identification of anti-counterfeiting features were verified. The results show that the holographic anti-counterfeit method has strong anti-bit compression capability, and can recover original authentication information through inverse Fresnel transformation and multiple decryption keys. It is a very effective holographic identification. The holographic marking method can be printed in documents and other printed materials as a personalized anti-counterfeit mark by variable data printing technology.