Abstract
As a result of the development of 3D color printers, three-dimensional color point-cloud models tends to be digitization. At the same time, the copyright protection is becoming more prominent. Current researches on digital watermarking for color point-cloud models have not been found in the literature libraries. A new digital watermarking scheme for three-dimensional color point-cloud models is proposed based on two-dimensional DCT (2D-DCT) transform to achieve an appropriate trade-off between transparency and robustness. Some effective points selected is firstly projected for the color three-dimensional point-cloud model and then a 2D color image is obtained. In the color image, the watermarking information is inserted by modifying the coefficient of 2D-DCT and then the image with watermarking information is mapped back to the color three-dimensional point-cloud model. Experimental results show the proposed method can successfully embed and extract the watermark information in color three-dimensional point-cloud model. The algorithm outperforms other three-dimensional point-cloud model watermarking methods in terms of imperceptibility and robustness, especially for against geometric attack.
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Zhang, S., Wang, F., Zhai, S. (2020). A Novel Watermarking Algorithm for Color Point-Cloud Models Based on 2D-DCT. In: Liu, Y., Wang, L., Zhao, L., Yu, Z. (eds) Advances in Natural Computation, Fuzzy Systems and Knowledge Discovery. ICNC-FSKD 2019. Advances in Intelligent Systems and Computing, vol 1075. Springer, Cham. https://doi.org/10.1007/978-3-030-32591-6_86
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DOI: https://doi.org/10.1007/978-3-030-32591-6_86
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