公开(公告)号：KR1020080095030A

公开(公告)日：2008-10-28

申请号：KR1020070039304

申请日：2007-04-23

Applicant: 동명대학교산학협력단

Inventor： 이석환 ,  권기룡 ,  김동규

IPC: G06F17/30 ,  G06F17/00

CPC classification number: G06T1/0092 ,  G06F17/50 ,  G06F21/16 ,  G06F2221/0733 ,  G06T2201/0051

Abstract: A method of watermarking 3D CAD(Computer Aided Design) image is provided to improve subjective texture and objective texture and extract a watermark without error against attacks such as file format conversion, RST(Rotation, Scaling, Translation), component removal and layer removal. Information to be embedded in a 3D CAD image is generated in the form of a binary bit watermark. An object line into which the watermark is inserted is set among line components. A watermark insertion intensity of the object line is obtained. The length of the object line is varied in the range of the insertion intensity according to the binary bit watermark. It is confirmed whether the varied line satisfies an insertion angle condition.

Abstract translation: 提供了一种水印3D CAD（计算机辅助设计）图像的方法，以改善主观纹理和客观纹理，并提取无错误的水印，例如文件格式转换，RST（旋转，缩放，翻译），组件移除和图层删除等攻击。 要嵌入3D CAD图像中的信息以二进制位水印的形式生成。 在线分量之间设置插入水印的对象线。 获得对象线的水印插入强度。 物体线的长度根据二进制位水印在插入强度的范围内变化。 确认各条线是否满足插入角条件。