R: [Insight-users] FastMarching

[Luis Ibanez]

Hi Lorenzon,

If you use the FastMarching filter without an input speed image
then you must provide the size, origin and spacing of the output
image that you desire to constructuct.

I would assume that you aare computing the distance map in order
to use it in combination with other images in your problem, therefore
it is likely that you should use the image size, spacing and origin
of one of the images that you plan to use along with the distance map.


Note that there are other DistanceMap filters in ITK:

     DanielssonDistanceMap
     MaurerDistanceMap

You may want to consider them as alternatives to FastMarching,
if what you are doing is to compute a distance map.



You may have to give us a more detailed description of the problem
that you are trying to solve, and why do you plan to use FastMarching
in that context.



Regards,


    Luis


----------------------
Lorenzo Cesario wrote:
> hi Luis, can i ask u a thing about fastmarchingfilter in thresholdlevelset
> segmentation?
> I would know, if i use fast marching like a distance map without giving it
> an input image, but only seeds and a constant speed, how can know the fast
> marching filter the size that this distance map image must have? is it
> necessary give to this filter the size of the image??
> Tks
> 
> 
> 
> 
>