A steganographic scheme for 3D point cloud models
This paper presents a new steganographic scheme for 3D point cloud models using self-similarity segmentation. The new scheme segments the 3D point cloud model to patches using self-similarity measures, and generates the codebook. The representative patches and similar patches are then taken from the codebook for every similar patch chain as the reference patches and the message patches. Finally, every message point in the similar message patches which has the point-to-point correspondence with a certain reference point in the reference patch can embed at least three bits by shifting the message point from current point to the corresponding embedding position using space subdivision. Experimental results show that the proposed technique is secure, has high capacity and low distortion, and is robust against uniform affine transformations such as transformation, rotation, scaling. The technique can be considered as a side-match steganography and has proven to be a feasible alternative to other steganographic schemes for 3D point cloud model.
steganography 3D point cloud models self-similarity patch chain spatial domain
QI Ke Xie Dong-qing
School of Computer Science and Education Software, Guangzhou University, GuahgZhou China
国际会议
重庆
英文
115-119
2011-01-21（万方平台首次上网日期，不代表论文的发表时间）