摘要
为改进三维模型信息隐藏的鲁棒性,提出了一种基于OBJ(3D模型文件格式)三维模型纹理贴图的信息隐藏算法.选取三维模型贴图进行多元数小波变换;运用奇异值分解理论进行静态系数提取;利用三维Arnold置乱和纹理映射算法对隐秘信息和静态系数进行融合与正交投影.实验结果表明,算法能显著提高线框渲染、顶点绘制、面片挤出和剪切等攻击的鲁棒性.
An information hiding algorithm based on texture mapping of one kind of the document formats of 3 D models(OBJ)is proposed in order to improve the robustness.First,3 D model texture maps are transformed into multivariate wavelet form.Second,the singular value decomposition theory is used to extract the multivariate wavelet static coefficients.Last,the secret information and the above static coefficients are merged by multiplication using the three-dimensional Arnold scrambling and texture mapping algorithm,and the merged coefficients are operated by orthographic projection to form the embedding regions.The experiment results indicated that the robustness against some attacks such as wireframe rendering,vertex rendering,patch extrusion,and shearing was improved,and the feasibility of this method was acceptable.
作者
任帅
王震
徐振超
苏东旭
贺媛
REN Shuai;WANG Zhen;XU Zhen-chao;SU Dong-xu;HE Yuan(School of Information Engineering,Chang’an University,Xi’an 710064,China)
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2019年第1期22-27,共6页
Journal of Beijing University of Posts and Telecommunications
基金
国家自然科学基金项目(61702050)
关键词
信息隐藏
多元数小波变换
奇异值分解理论
information hiding
multiple wavelet transform
singular value decomposition theory
