[Insight-users] distances in x-y-z independently

[Luis Ibanez]

Hi Xabier,

Nope,
there is currently no filter that performs such operation.

        ...Your description was a bit confusing...

You say that you want to take a pixel P and look at all the pixels
with the same X and return the minimum distance in that dimension.

However, the set of pixels with same X coordinate as a given pixel P
is actually a *plane*, not a line.

I would assume that what you meant was to say that given a pixel P
you want to find how far you have to walk along direction X in order
to find the closest pixel.


            Is that what you had in mind ?


In principle you will be able to do this using
the ImageLinearIteratorWithIndex.

You may find useful to read the ITK Software Guide


    http://www.itk.org/ItkSoftwareGuide.pdf


in particular the Chapter on Image Iterators.



    Regards,


       Luis


---------------------------------------
Xabier Artaechevarria Artieda wrote:
> Hi all,
> I am looking for a filter that returns the distance from each pixel to  
> an object in each axis independently.
> In other words, for each pixel, it should look at all the pixels with  
> same X and return the minimum distance in that dimension. The same for  
> Y and for Z, if the image is 3D.
> I have looked at DanielssonDistanceMapImageFilter but it returns a  
> vectorial image with the distance to the closest object point, instead  
> of considering each dimension independently.
> Is there any filter that does what I am looking for or should I develop 
> one?
> Thanks in advance.
> Best,
> Xabi
>