CGAL users discussion list

[Qianqian Fang <>]

On 02/06/2012 03:17 AM, Sebastien Loriot (GeometryFactory) wrote:
> If your contours are polygonal, then you can use the
> straight skeleton package:
>
> http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Straight_skeleton_2/Chapter_main.html 

hi Sebastien

thanks for your reply. Unfortunately the contours are
defined by B-splines (but fortunately,, my results do
not require scientific rigor).

I managed to convert the contours to bitmaps and
use other free software to extract the skeleton:

http://tech.groups.yahoo.com/group/autotrace/message/1215

the results is not perfect. I might need to come up
with some post-processing to straighten the lines.

Certainly it will be interesting to see autotrace
to use CGAL as the backend some time in the future.

Qianqian

> Sebastien.
>
> On 02/04/2012 06:01 PM, Qianqian Fang wrote:
> > hi list
> >
> > I have a bunch of tubular 2D contours
> > (closed outlines). I am wondering if it is
> > possible to use CGAL to extract the skeletons
> > of the contours? if yes, can you point me to
> > some examples?
> >
> > thank you very much
> >
> > Qianqian