基于距离特征与体积积分不变量的三维模型信息隐藏算法

In order to improve the robustness and embedding capacity of 3D model information hiding algorithms and enable 3D models to hide a large amount of secret information, this paper proposes a 3D model information hiding algorithm based on distance features and volume integral invariants. The main idea of the algorithm is as follows: Firstly, using distance features, which are global variables of 3D models, multiple 3D model carriers are classified by using a similarity formula; Secondly, the volume inside and outside the sphere of 3D model vertices is calculated using volume integral invariants to classify the 3D model vertices; Finally, the secret information is hidden in the 3D model by modifying the convexity and concavity of the 3D model vertices and sent to the recipient for extraction. The experimental results show that the algorithm in this paper has good robustness and invisibility.

为了提高三维模型信息隐藏算法的鲁棒性和嵌入容量，使得三维模型可以隐藏大容量的秘密信息，本文提出一种基于距离特征和体积积分不变量的三维模型信息隐藏算法。算法的主要思想是:首先使用距离特征这种三维模型全局变量，利用相似性公式对多个三维模型载体进行分类;其次使用体积积分不变量计算三维模型顶点的球体内外体积，对三维模型顶点进行分类;最后通过修改三维模型顶点的凹凸程度把秘密信息隐藏到三维模型中，发送给接受者进行提取。实验结果表明本文算法具有很好的鲁棒性和不可见性。