摘要
针对现有三维网格模型的加密域数据隐藏方法存在秘密信息提取有误、恢复原始载体质量差以及额外开销高等问题,提出了一种可用于三维网格模型的加密域可逆数据隐藏方法。首先,将三维模型的顶点按照一定规则进行分组,并通过对组内冗余空间的排查,将分组进一步细分为嵌入组与不可嵌入组;然后,对三维模型进行加密,并在加密模型中修改顶点的MSB(Most significant bit)以进行信息嵌入。在接收端,接受者在拥有密钥的情况下,可以正确提取秘密信息并实现模型的无损恢复。实验结果表明,与参考的两种用于三维网格模型加密域数据隐藏方法相比,平均嵌入率分别提高了331%与45%.
A reversible data hiding method in the encrypted domain for 3D mesh models is proposed to address the issues of incorrect extraction of secret information,poor quality of restoring the original carrier,and high additional cost in existing data hiding methods in the encrypted domain.Firstly,the vertices of the 3D model are grouped according to certain rules,And by troubleshooting redundant spaces within the group,the grouping is further subdivided into embedded groups and non-embeddable groups;Then,encrypt the 3D model and modify the MSB(Most significant bit)of the vertices in the encrypted model for information embedding.On the receiving end,the receiver can correctly extract secret information and achieve lossless recovery of the model while possessing the key.The experimental results show that compared with the two referenced methods for data hiding in the encrypted domain of 3D mesh models,the average embedding rates have increased by 331%and 45%,respectively.
作者
胡凯
刘丽
李志宏
王安红
HU Kai;LIU Li;LI Zhi-hong;WANG An-hong(School of electronic information engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China)
出处
《太原科技大学学报》
2025年第4期301-306,共6页
Journal of Taiyuan University of Science and Technology
基金
国家自然科学基金(62072325)。
作者简介
胡凯(1998-),男,硕士研究生,主要研究方向为可逆信息隐藏;通信作者:李志宏,副教授,E-mail:1994013@tyustdu.cn.
