摘要
本文提出了一种基于模长的三维地理模型数据空域数字水印算法.针对距离不变量模长展开剖析,根据该模型数据特点,将模长选定为水印嵌入及提取时的根基性目标.通过对将要检测的模型中顶点至中心的模长距离及其所处的区间位置的统计来嵌入水印,对比初始的及所提取的水印,剖析其二者之间的关联性.针对此类模型里初始水印的存在性进行检验.通过实验对此算法进行了验证.新算法不但可以实现对仿射变换攻击的强力对抗,而且在抗衡强度较低的噪声攻击时也表现出较佳的成效.
A digital watermarking algorithm for 3D spatial data spatial domain based on model length is proposed. First, the model length of distance invariant is analyzed. Then, based on the characteristics of the model data, the model length is selected as the basic target when the watermark is embedded and extracted. The watermark is embedded by the statistics of the length of the vertex to center and the interval of the distance in the model of waiting detection. The correlation between the extracted watermark and the original watermark is compared, and the existence of the original watermark in the model is tested. Finally, the algorithm is proved by the experiment. The algorithm based on distance construction can effectively resist affine transformation attacks such as rotation and translation, and low intensity noise attacks.
作者
刘海艳
黄智深
朱长青
薛治国
Liu Haiyan;Huang Zhishen;Zhu Changqing;Xue Zhiguo(School of Biology and Geography,Kashgar University,844000,Kashgar,Xinjiang,China;Command of the Southern Xinjiang Military Region,844000,Kashgar,Xinjiang,China;School of Biology and Geography,Nanjing Normal University,210046,Nanjing,China)
出处
《山东师范大学学报（自然科学版）》
CAS
2018年第3期288-292,共5页
Journal of Shandong Normal University(Natural Science)
基金
喀什大学校内课题(15-2569)
国家社会科学基金重大项目(11&ZD162)
关键词
模长不变量
数字水印
三维模型
空间域
module length
digital watermarking
3D model
spatial domain
