CAJ | 학술논문

三维网格模型数字水印技术为近年来多媒体信息安全领域的的一个研究热点。本文设计实现了一个基于数字水印技术的三维网格模型库版权保护系统，用户在下载使用模型前，模型的版权信息、下载日期、用户编号、模型编号等信息将作为数字水印添加到模型中，日后怀疑侵权行为时，可提取隐藏在模型中的水印信息作为维权证据。水印的嵌入算法通过修改模型顶点球面坐标半径值进行，水印提取时无需原始模型的参与。实验结果表明，系统嵌入的水印具有良好的不可见性，可有效的保护三维模型所有者的版权。
삼유망격모형수자수인기술위근년래다매체신식안전영역적적일개연구열점。본문설계실현료일개기우수자수인기술적삼유망격모형고판권보호계통，용호재하재사용모형전，모형적판권신식、하재일기、용호편호、모형편호등신식장작위수자수인첨가도모형중，일후부의침권행위시，가제취은장재모형중적수인신식작위유권증거。수인적감입산법통과수개모형정점구면좌표반경치진행，수인제취시무수원시모형적삼여。실험결과표명，계통감입적수인구유량호적불가견성，가유효적보호삼유모형소유자적판권。
Digital watermarking technology of 3D mesh models is a hot research topic of multimedia information security field in recent years. This article designs and implements a copyright protection of 3D mesh models library system based on digital watermarking tech- nology. Before users download models, Model copyright information, download date, user ID, model ID and other information will be added to the model as digital watermarks. When Suspecting infringement in the future, Copyright owners can extract hidden watermark information as the rights of the evidence. The watermark embedding algorithm is executed by modifying the value of the model vertex spherical coordinates radius, and extraction algorithms didn't need origin models. The experimental results show that the embedded wa- termark has good transparency,can effectively protect the copyright of the owners of 3D models.