北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2023, Vol. 46 ›› Issue (1): 109-114,126.

• 研究报告 • 上一篇    下一篇

一种基于三维模型顶点分区的多载体信息隐藏算法

任帅,雷雪梅,淡卓异,何骁,石磊   

  1. 长安大学
  • 收稿日期:2021-11-01 修回日期:2022-05-16 出版日期:2023-02-28 发布日期:2023-02-22
  • 通讯作者: 雷雪梅 E-mail:1254315635@qq.com
  • 基金资助:
    中央高校基本科研业务费专项项目

Multi-Carrier Information Hiding Algorithm Based on Vertex Partition of 3D Model

  1. Chang'an University
  • Received:2021-11-01 Revised:2022-05-16 Online:2023-02-28 Published:2023-02-22
  • Contact: LEI Xuemei E-mail:1254315635@qq.com

摘要: 为改进单个三维模型载体信息隐藏的鲁棒性,提出了一种三维模型顶点分区的多载体信息隐藏算法将每个三维模型变换到几何不变空间中,通过调整顶点法向量对多个模型进行组合形成多载体融合态;将融合态顶点按均方根曲率值划分出特征点集合;对融合态顶点坐标进行扇形分区,通过改变分区中特征顶点的极坐标值对秘密信息进行隐藏实验结果表明,所提算法可以抵抗简化剪切噪声和平滑等针对三维模型的攻击,鲁棒性有明显提升

关键词: 信息隐藏, 三维模型, 多载体, 扇形解析, 鲁棒性

Abstract: To improve the robustness of information hiding on a single 3D model carrier, a multi carrier information hiding algorithm based on vertex partition of 3D model is proposed. Each 3D model is transformed into geometric invariant space, and multiple models are combined to form a multi-carrier fusion state by adjusting vertex normal vectors. The fused vertices are divided into feature points according to root mean square curvature. The fused vertex coordinates are sector partitioned, and secret information is hidden by changing the polar coordinates of feature vertices in the partition. Experimental results show that the proposed algorithm can resist attacks on 3D models such as simplification, clipping, noise and smoothing, and its robustness is significantly improved.

Key words: information hiding, three-dimensional model , multi-carrier, sector analysis, robustness

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