一种用于版权保护的随机相位量化编码方法  

A New Phase Quantization Method of Random-phase Encoding for Copyright Protection

作　　者：乌旭[1] 胡家升[1] 梁殿亮[1] 吴克难[1] 

机构地区：[1]大连理工大学电子与信息工程学院

出　　处：《光电子．激光》2006年第5期620-624,共5页Journal of Optoelectronics·Laser

摘　　要：基于传统的随机相位编码技术,提出了一种新的相息图量化编码方法。该方法采用条码编码技术和数制转换原理,将编码得到相息图的高阶量化信息映射为二值矩阵,并进一步打印制作成二值的防伪标签,不但可以实现文本内容的自动录入,同时也提高了传统随机相位编码技术解码图像的信噪比。计算机仿真与光学扫描实验表明,该方法具有认证过程相对简单、解码图像信噪比高、成本低和防伪性能好等优点。A new phase quantization method of a phase hologram based on conventional random-phase encoding technique is proposed. The value consisted of multi-phase information of the phase hologram is mapped into a binary matrix by decimal-binary conversion. The binary matrix is encoded and printed as the 2-D anti-counterfeit label. As a result, the technique not only realizes the automatic input of text information, but also enhances the peak signal-to-noise ratio （PSNR） of the decoded image. Computer simulations and optical scanning experiments show that the presented technique has advantages of the simple authentication process, high PSNR, inexpensive cost and good security.

关 键 词：随机相位编码技术 相息图 条码 量化 防伪 

分 类 号：O438[机械工程—光学工程]