【摘要】 针对CAD图纸远程传输信息安全的问题,根据数字水印的原理对图像数据文件结构及DXF文件结构进行了分析,给出了DXF文件基于信息替代的数字水印算法,实现了CAD图纸远程传输过程中的信息隐藏。更多还原

【Abstract】 In the view of the security of the remote transmission of the CAD drawing,the general principle of watermark is studied,and the structure of image file and DXF file is analyzed.The digital watermark algorithm based on in-formation substitution for DXF file is presented.The experiment result is perfect,and the require ment of in-formation hiding in remote transmission of CAD drawing is realized.更多还原