基于LDPC码的数字图像水印技术的研究  

Study of Digital Image Watermark Application Based on LDPC Code Technology

作　　者：沈锁金 欧世峰[1] 魏静[1] 刘伟[1] 

机构地区：[1]烟台大学光电信息科学技术学院,山东烟台264005

出　　处：《中国集成电路》2016年第10期51-54,共4页China lntegrated Circuit

基　　金：山东省高等学校科技计划项目(No.J12LN27);烟台大学研究生科技创新基金资助重点项目(No.YDZD1605)

摘　　要：LDPC(low density parity check code)也被称为低密度校验码编码技术[1-3],在很多信息传输系统中都有广泛地应用,例如:无线和有线通信、存储工业和深空通信系统。在对保密性及可靠性要求高的通信系统中,对保密数字图像信号嵌入水印是一种比较理想的传输方式。通过对数字图像水印的编码纠错的方法,LDPC码可以降低在数字图像检测过程中的误码率,从而达到提高数字图像水印在传输过程中因受到外界攻击时的鲁棒性的目的。LDPC（low density parity check code）, which is also named as low density check code coding technique[1-3],has widely use in various kinds of information transmission systems,for example： wired and wireless communications,storage industry and deep space communications systems. In the high confidentiality and reliability communication system, it is an ideal transmission mode to embed the watermark to the confidential digital image signal. According to the method of correcting the error of the digital image watermarking coding, LDPC code can reduce the bit error rate in the process of digital image detection, which can achieve the goal to improve the robustness when the digital image watermarking in transit is attacked by external condition.

关 键 词：LDPC码 数字水印 鲁棒性 误码率 

分 类 号：TN911.22[电子电信—通信与信息系统]