[vtkusers] how to get outline from CT images

[ljhfdy4]

Hi, friends:

I have a question about how to get the outline from CT images. What I want to do is extracting the outline of a special tissue like bone or skin from one slice of CT (threshold may needed). In my idea the outline should be polyline, but I am not sure which functions can do this work exactly. Also how can i save the extracted polyline into a format the CAD packages can read? If impossible, image format is ok too.

Thanks a lot for your help.


Ljh
______________________________________

===================================================================
ÐÂÀËÃâ·Ñµç×ÓÓÊÏä (http://mail.sina.com.cn)
ÐÂÀË·ÖÀàÐÅÏ¢£º¶þÊÖÊг¡×ßÒ»×ߣ¬¸Ã³öÊÖʱ¾Í³öÊÖ£¡ (http://classad.sina.com.cn/2shou/)