Hi Karim,

We are now using the image.sc forum so it’s better to post on it now.

I’m replying here as you weren’t aware probably, about your issue, latest versions of Active Contours should manage that better (but not yet perfectly, it can still go outbound sometime). Did you check that you’re actually using the last version of the plugin ? Also i saw you’re using contour inflation parameter with a high value, maybe reducing it will help avoiding that problem.

Best,

– Stephane