摘要
为防止学生在计算机绘图实验中拷贝作业,借鉴水印嵌入方法,研究了AutoCAD图形文件拷贝的检测方法。把学生操作计算机的IP或MAC地址作为水印信息嵌入至学生作业文件中,检测时提取图形的水印信息,以检测作业是否拷贝而来。经教学实践检验,能较准确判断作业是否拷贝抄袭,显著提高了计算机绘图的教学效果。
To prevent students in the computer graphics lab copy operations,drawing on watermark embedding method,studying detection method for AutoCAD graphic file copy.Taking that the students operate a computer's IP or MAC address as the watermark information is embedded in the students' operation file,while testing extract the watermark graphical information,to detect whether the operations from copy.After the test of teaching practice,can more accurately determine whether the copy operation,significantly improved the teaching of computer graphics.
出处
《机械管理开发》
2012年第1期183-184,共2页
Mechanical Management and Development
关键词
计算机绘图
拷贝检测
水印技术
computer graphics
copy detection
watermarking technology
