计算机工程 ›› 2012, Vol. 38 ›› Issue (06): 151-152.doi: 10.3969/j.issn.1000-3428.2012.06.049

• 安全技术 • 上一篇    下一篇

基于DWT的3D点云模型数字水印算法

吴颖斌 1,2,耿国华 1,贺毅岳 1   

  1. (1. 西北大学信息科学与技术学院,西安 710027;2. 运城学院计算机科学与技术系,山西 运城 044000)
  • 收稿日期:2011-08-12 出版日期:2012-03-20 发布日期:2012-03-20
  • 作者简介:吴颖斌(1982-),男,助教、硕士研究生,主研方向:数字图像处理;耿国华,教授、博士生导师;贺毅岳,博士研究生
  • 基金项目:
    国家自然科学基金资助项目(60873094);2008年度高等学校博士学科点专项科研基金资助项目(200806970014);西北大学 自主创新基金资助项目(10YZZ15)

Digital Watermark Algorithm Based on DWT for 3D Point Cloud Model

WU Ying-bin 1,2, GENG Guo-hua 1, HE Yi-yue 1   

  1. (1. School of Information Science and Technology, Northwest University, Xi’an 710027, China; 2. Department of Computer Science and Technology, Yuncheng University, Yuncheng 044000, China)
  • Received:2011-08-12 Online:2012-03-20 Published:2012-03-20

摘要: 提出一种基于离散小波变换(DWT)的3D点云模型数字水印算法。选取3D点云模型各点到模型重心距离值的一维DWT低频信号部分,进行水印信息的嵌入。实验结果表明,该算法嵌入数据量大,算法简单且容易实现,同时对仿射变换、重排序攻击、简化、剪切和噪声等变形攻击具有较强的鲁棒性。

关键词: 点云模型, 网格模型, 数字水印, 鲁棒性, 离散小波变换, 透明性

Abstract: A novel method which is based on Discrete Wavelet Transform(DWT) for digital watermark of a 3D point cloud model is presented. The distance of each vertex in the 3D model to the center point is calculated. The distance is transformed into a signal in frequency domain using one-dimensional DWT and the watermark is embedded in the low frequency of the signal in frequency domain. Experimental results show that the scheme is simple, efficient, easy to implement, and robust against attacks, such as affine transformation, resorting, simplification, cropping and nosing distortion.

Key words: point cloud model, mesh model, digital watermark, robustness, Discrete Wavelet Transform(DWT), invisibility

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