Abstract
A robust watermarking algorithm for 3D point cloud models based on feature vertices is proposed in this paper. Vertices with mean curvature less than zero are selected as feature vertices for watermark embedding. These feature vertices lying in the deeper surface can guarantee better imperceptibility for the watermarking information. The invariant space is established to resist geometric attacks by using the rest vertices, in which the 3D model are divided several ball rings according to the number of watermark bits. Scheme to embed watermarking information is to modify the radial distances of the feature vertices within the different ball rings. Experimental results show the proposed algorithm is robust against geometric attacks. It outperforms other methods in terms of imperceptibility and robustness.
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Acknowledgments
This work is supported in part by the National Natural Science Foundation of China (No. 61472319), by Natural Foundation of Shanxi Province Key Project (No. 2015JZ015), and by Xi’an Science and Technology Project (No. XALG025).
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Liu, J., Yang, Y., Ma, D., Wang, Y., Pan, Z. (2018). A Watermarking Algorithm for 3D Point Cloud Models Using Ring Distribution. In: Pan, Z., Cheok, A., Müller, W. (eds) Transactions on Edutainment XIV. Lecture Notes in Computer Science(), vol 10790. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-56689-3_5
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DOI: https://doi.org/10.1007/978-3-662-56689-3_5
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