[Insight-users] ITK and VTK

[Luis Ibanez]

Hi Pietro,

Could you please post to the list the line of code
(and even better, include the 10 lines above and
below this line) so we can see it in context ?

There is something suspicious in your message,
since, it should be trivial to cast a non-const pointer
to a const pointer.  Please make sure that you copy
paste the error message in your email exactly as
you get it from the compiler.


  Thanks


     Luis


-------------------------------------
On Thu, May 24, 2012 at 7:53 AM, Pietro Nardelli <pie.nardelli at gmail.com>wrote:

> Sorry Luis,
>
> I have another quetion: I'm trying to create a pipeline which uses a
> cropped volume (obtained by using the RegionOfInterestImageFilter) as
> input of a connected threshold filter. Building it, though, I get an
> error: it says that it cannot convert parameter 1 from
> 'itk::Image<TPixel,VImageDimension> *' to 'const
> itk::Image<TPixel,VImageDimension> *'.
>
> What might it be? Any Idea?
>
> Thank you again
>
> Pietro
>
> 2012/5/24 Luis Ibanez <luis.ibanez at kitware.com>:
> > HI Pietro,
> >
> > It depends where in your application you are extracting the region.
> >
> > If you are doing it in the code that deals with visualization and the
> > resulting region is only going to be used for display, then the VTK
> > filter will do just fine.
> >
> > On the other hand, if you are doing this in the middle of a pipeline
> > and the extracted region is going to be used for subsequent
> > processing, you probably should prefer the ITK Region of Interest
> > filter:
> >
> >
> http://www.itk.org/Doxygen/html/classitk_1_1RegionOfInterestImageFilter.html
> >
> > since it preserves the orientation (direction cosines) of the image,
> > and properly sets the origin in physical coordinates of the output
> > image region.  This are very important attributes if you are using
> > the resulting image in registration, or if you plan to correlate it
> > spatially to the input image.
> >
> >     Hope this helps,
> >
> >          Luis
> >
> >
> > ------------------------------------
> > On Wed, May 23, 2012 at 12:08 PM, Pietro Nardelli <
> pie.nardelli at gmail.com>
> > wrote:
> >>
> >> Sorry guys,
> >>
> >> I have another question: I'm using the class Region of interest to
> >> crop a volume of a DICOM dataset, but I found out that in VTK there is
> >> the class Extract ROI which seems very similar. Does anyone know what
> >> the difference between the 2 classes? Which is the best one?
> >>
> >> Thank you,
> >>
> >> Pietro
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