28 October 2016 3D printing optical watermark algorithms based on the combination of DWT and Fresnel transformation
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Proceedings Volume 9683, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 968312 (2016) https://doi.org/10.1117/12.2242558
Event: Eighth International Symposium on Advanced Optical Manufacturing and Testing Technology (AOMATT2016), 2016, Suzhou, China
Abstract
With the continuous development of industrialization, 3D printing technology steps into individuals’ lives gradually, however, the consequential security issue has become the urgent problem which is imminent. This paper proposes the 3D printing optical watermark algorithms based on the combination of DWT and Fresnel transformation and utilizes authorized key to restrict 3D model printing’s permissions. Firstly, algorithms put 3D model into affine transform, and take the distance from the center of gravity to the vertex of 3D object in order to generate a one-dimensional discrete signal; then make this signal into wavelet transform and put the transformed coefficient into Fresnel transformation. Use math model to embed watermark information into it and finally generate 3D digital model with watermarking. This paper adopts VC++.NET and DIRECTX 9.0 SDK for combined developing and testing, and the results show that in fixed affine space, achieve the robustness in translation, revolving and proportion transforms of 3D model and better watermark-invisibility. The security and authorization of 3D model have been protected effectively.
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Qi Hu, Qi Hu, Jin Duan, Jin Duan, Di Zhai, Di Zhai, LiNing Wang, LiNing Wang, } "3D printing optical watermark algorithms based on the combination of DWT and Fresnel transformation", Proc. SPIE 9683, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 968312 (28 October 2016); doi: 10.1117/12.2242558; https://doi.org/10.1117/12.2242558
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