基于特征不变量的三维点云数据交换密码水印算法研究  

Research on 3 D point cloud data commutative encryption and watermarking algorithm based on feature invariants

作　　者：崔翰川 樊志辉 Cui Hanchuan;Fan Zhihui(Nanjing Geomarking lnformation Technology Co.,Ltd.,Nanjing 210046,China;Key Laboratory of Virtual Geographic Environment,Ministry of Education,Nanjing Normal University,Nanjing 210023,China)

机构地区：[1]南京吉印信息科技有限公司,江苏南京210013 [2]南京师范大学虚拟地理环境教育部重点实验室,江苏南京210097

出　　处：《无线互联科技》2023年第6期115-123,共9页Wireless Internet Technology

摘　　要：文章对三维点云数据的顶点模长特征进行了研究,提出了基于特征不变量的三维点云数据交换密码水印算法。利用三维点云数据的顶点模长集合在置乱加密过程中集合不变性,结合水印映射思想和奇偶量化的方式来嵌入水印信息。实验表明,算法保证了水印和加解密操作顺序的互换性,也提高了交换密码水印算法的耦合性、安全性和鲁棒性,为三维点云数据在实际传输、存储和使用过程中提供了安全保障。Researching on Vertex modulus feature of 3D point cloud data,an exchange cryptographic watermarking algorithm based on feature invariants for 3D point cloud data is proposed.Using set invariance of the vertex moduli set in the scramble encryption process of the 3D point cloud data,the watermark information is embedded by combining the watermark bitmap and parity quantization.Experiments show that the algorithm ensures the interchangeability of watermarking and operation sequences of encryption and decryption,and also improves the coupling,security and robustness of the exchange cipher watermarking algorithm,providing a better security solution for the actual transmission,storage and use of 3D point cloud data.

关 键 词：三维点云数据 特征不变量 置乱加密 交换密码水印 数据安全保护 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]