[Insight-users] itkThresholdSegmentationLevelSetFunction

[Joshua Cates]

Hi Lucas,

The "edge" weight setting for this filter controls how strongly the 
surface is attracted to a Laplacian edge calculation.  Normally this term 
is set to zero and the speed is determined solely by the intensity 
threshold.  There is no advection term in this method so the advection 
weight has no influence.

See the documentation in the 
file itkThresholdSegmentationLevelSetFunction.h.

Josh.

______________________________
 Josh Cates			
 Scientific Computing and Imaging Institute
 University of Utah
 (801) 587-7697
 http://www.sci.utah.edu/~cates


On Fri, 19 Mar 2004, Lucas Lorenzo wrote:

> Hi,
> 
> I have one more question:
> 
> when initializing this filter, the propagation weight is multiplied by 
> -1:
> 
>      this->SetPropagationWeight(-1.0 * 
> NumericTraits<ScalarValueType>::One);
> 
> Why is that ?
> 
> Thanks,
> 
> Lucas
> 
> On Mar 19, 2004, at 1:59 PM, Lucas Lorenzo wrote:
> 
> > Hi all,
> >
> > when talking about itkThresholdSegmentationLevelSetFunction, what's 
> > the difference between SetEdgeWeight and SetAdvectionWeight ?
> > Thanks,
> >
> > Lucas Lorenzo
> >
> > University of Utah
> > Nora Eccles Harrison CardioVascular Research and Training Institute
> > Fellows Room
> > 95 South 2000 East
> > Salt Lake City, UT 84112-5000
> >
> > e-mail:  lucas at cvrti.utah.edu
> > telephone: 801-587-9536
> Lucas Lorenzo
> 
> University of Utah
> Nora Eccles Harrison CardioVascular Research and Training Institute
> Fellows Room
> 95 South 2000 East
> Salt Lake City, UT 84112-5000
> 
> e-mail:  lucas at cvrti.utah.edu
> telephone: 801-587-9536
>