[Insight-users] vtk -> itk -> (itk process) -> itk -> vtk

[Luis Ibanez]

Hi John,

Probably the real solution is for us to
extend the VTK/ITK import mechanism for
supporting Color images.

In the meantime, both of your (1) and (2)
options are feasible.

For option (1) you may want to look at the
ImageAdaptors in ITK. They allow to merge
three scalar images into a single RGBImage.
You could do this both as a filter or as
an Adaptor. The adaptor is probably the best
tradeoff in memory.

For option (2) the limitation is that
the pipeline updates between ITK and VTK
will have to be managed manually. But,
if you want to solve the problem in
less than an hour. That seems to be the
way to go.




    Luis




----------------------------------

John David Fleig wrote:

> The main issue of my earlier questions about getting an image into itk 
> from vtk is a little more complicated than just reading an image from a 
> file directly into itk. 
> 
> In general the images will be coming from someplace and of varying 
> types. They may be read in through the vtk layer, or through some other 
> mechanism and given to me in a raw memory buffer or stream. The trick is 
> that I will have distributed processes to handle the entire vtk/itk 
> processing and need some way to read in potentially mulidimensional color 
> images into itk. 
> 
> Per prior discussions I've already learned that the vtk/itk 
> imports/exports do not support color images. Therefore I have two 
> questions:
> 
> 1) In vtk I can break apart the rgb image into each component (as well as 
> combine them back together again). Is there something similiar in itk, so 
> that I could convert each one over to itk separately and then combine 
> them? (and then break them up again to go backward)
> 
> 2) Can I use something like ImportImageFilter and hand off a memory buffer 
> and tell it, hey expect to see 3 component data?
> 
> David
> 
> 
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