An Error-Correcting Code-Based Robust Watermarking Scheme for Stereolithographic Files  

作　　者：Zhuorong Li Huawei Tian Yanhui Xiao Yunqi Tang Anhong Wang 

机构地区：[1]School of Criminal Investigation,People’s Public Security University of China,Beijing,100038,China [2]School of National Security,People’s Public Security University of China,Beijing,100038,China [3]School of Electronic Information Engineering,Taiyuan University of Science and Technology,Taiyuan,030024,China

出　　处：《Computer Systems Science & Engineering》2021年第5期247-263,共17页计算机系统科学与工程（英文）

基　　金：This work was supported in part by the National Science Foundation of China(No.61772539,6187212,61972405),STITSX(No.201705D131025),1331KITSX,and CiCi3D.

摘　　要：Stereolithographic(STL)files have been extensively used in rapid prototyping industries as well as many other fields as watermarking algorithms to secure intellectual property and protect three-dimensional models from theft.However,to the best of our knowledge,few studies have looked at how watermarking can resist attacks that involve vertex-reordering.Here,we present a lossless and robust watermarking scheme for STL files to protect against vertexreordering attacks.Specifically,we designed a novel error-correcting code(ECC)that can correct the error of any one-bit in a bitstream by inserting several check digits.In addition,ECC is designed to make use of redundant information according to the characteristics of STL files,which introduces further robustness for defense against attacks.No modifications are made to the geometric information of the three-dimensional model,which respects the requirements of a highprecision model.The experimental results show that the proposed watermarking scheme can survive numerous kinds of attack,including rotation,scaling and translation(RST),facet reordering,and vertex-reordering attacks.

关 键 词：Three-dimensional watermarking stereolithographic file robust watermarking error-correcting code 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]