[Insight-users] Canny-Edge Level Set Segmentation

[Anna Vignati]

Hi all,

I've got a question about Canny-Edge Level Set Segmentation. In the
example:

Examples/Segmentation/CannySegmentationLevelSetImageFilter.cxx

The value of the parameter "threshold" is 7.0. Do you know what is the
rational behind this choice? I mean, How can I choose the value for this
parameter for a given input image?

I was searching through the mailing-list archive but I couldn't find 
anything about it.

Thank you in advance.
Anna.