教育网站
JAVA做的演示：http://users.ecs.soton.ac.uk/msn/book/new_demo/
Ian Mitchell Computer Science Department, University of British Columbia.
http://www.cs.ubc.ca/~mitchell/
http://www.cs.ubc.ca/~mitchell/ToolboxLS/
水平集 http://www.cad.zju.edu.cn/home/zhx/csmath/doku.php?do=export_xhtml&id=keynote:lesson08
The Joy of Visual Perception http://www.yorku.ca./eye/thejoy.htm
