水印技术在钻孔图像版权保护中的应用  

Application of watermarking technology in digital borehole images copyright protection

作　　者：薛琴 

机构地区：[1]中煤科工集团西安研究院,陕西西安710077

出　　处：《矿业工程研究》2012年第3期34-38,共5页Mineral Engineering Research

基　　金：中煤科工集团西安研究院自筹基金资助项目(2012XAYPT003)

摘　　要：针对数字钻孔图像结合提升小波变换的优点得到了一种版权保护算法.该算法主要利用数字钻孔图像进行小波分解,分解后的系数将版权拥有单位的水印信息嵌入,达到版权保护的目的.该算法嵌入后不影响数字钻孔图像的视觉质量,同时增强了抗物理攻击的能力.该算法具有以下特点:数字钻孔图像嵌入水印后具有较高的信噪比,适用于对井下环境摄取的图像进行版权保护;结合小波系数信息来选择嵌入水印的位置,可保证水印的鲁棒性;可利用密钥对本算法进行保护,即使算法公开,也能抵挡恶意攻击.理论分析和计算机仿真实验表明,该算法具有很好的稳健性,所隐藏的水印具有良好的抗攻击性,并且复杂度较低,实用性较强.A copyright protection algorithm combined with the advantages of lifting wavelet transform for digital borehole images is proposed. The algorithm using digital borehole images uses wavelet decomposition, and the decomposition coefficient embeds the copyright owner units watermark information, to achieve the purpose of copyright protection. The algorithm is embedded, which does not affect the visual quality of digital borehole images, but enhancing the ability of anti - physical attack. The algorithm has the following characteristics ： digital borehole images watermarked has a higher signal to noise ratio, and is applicable to copyright protection on the image of the underground environment and intake. Combined with wavelet coefficients to select the location of the embedded watermark, it can guarantee the robustness of the watermark, and can be used to protect key of the algorithm. Even if the algorithm is open, it is able to withstand malicious attacks. The theoretical analysis and computer simulation results show that the algorithm has a good robustness, and the hidden watermark has a good resistance to attack, and it has low complexity and strong practicality.

关 键 词：数字水印 提升小波变换 版权保护 

分 类 号：TD166[矿业工程—矿山地质测量]