[vtkusers] vtkImageReslice using stencil

[E.R]

Thank you very much!

How I extract a specific region with reslice.SetOutputExtent(100, 300, 250, 300, 0, 0)? ? 

It's not working...Its the same with reslice.SetOuputExtent(0,200,0,50,0,0)...


--- Στις Δευτ., 20/09/10, ο/η David Gobbi <david.gobbi at gmail.com> έγραψε:

> Από: David Gobbi <david.gobbi at gmail.com>
> Θέμα: Re: [vtkusers] vtkImageReslice using stencil
> Προς: "E.R" <frantic_tictoc83 at yahoo.gr>
> Κοιν.: vtkusers at vtk.org
> Ημερομηνία: Δευτέρα, 20 Σεπτέμβριος 2010, 17:09
> Hi Elias,
> 
> I recommend that you don't use vtkImageStencilData for what
> you are
> doing.  Instead, you should first use reslice on just
> the region, and
> then pad the output with vtkImagePadFilter:
> 
>  padFilter.SetInputConnection(reslice.GetOutputPort());
>  reslice.SetOutputExtent(100, 300, 250, 300, 0, 0);
>  padFilter.SetOutputExtent(0, 511,0,804,0,0);
> 
> With stencils, you cannot easily build a
> vtkImageStencilData from
> scratch.  The vtkImageStencilData should be only be
> produced by a
> source or filter.
> 
>   David
> 
> 
> 
> 
> 
> 
> 2010/9/20 E.R <frantic_tictoc83 at yahoo.gr>:
> >  I have tried this..but I got a memory
> >  error.."Attempted to read or write protected
> memory"...
> >  What I am doing wrong????? :-|
> >
> >> --- Στις Δευτ., 20/09/10, ο/η Jim
> Peterson <jimcp at cox.net>
> >> έγραψε:
> >>
> >> > Από: Jim Peterson <jimcp at cox.net>
> >> > Θέμα: Re: [vtkusers] vtkImageReslice
> using
> >> stencil
> >> > Προς: "E.R" <frantic_tictoc83 at yahoo.gr>
> >> > Κοιν.: vtkusers at vtk.org
> >> > Ημερομηνία: Δευτέρα, 20
> >> Σεπτέμβριος 2010, 15:15
> >> > Elias,
> >> > If I read that error message correctly, it
> sounds
> >> like
> >> > reslice.SetOutputExtent(100,300,250,300,0,0)
> ;
> >> > would be accepted. The question is would it
> be the
> >> desired
> >> > result?
> >> >
> >> > HTH
> >> > Jim
> >> >
> >> > E.R wrote:
> >> > > Greetings!!
> >> > >
> >> > > I am using vtkImageReslice.setStencil()
> to limit
> >> a
> >> > specific area.
> >> > > My code is like that:
> >> > > vtkImageStencilData test = new
> >> vtkImageStencilData();
> >> > >
> >> > > test.SetExtent(100, 300, 250, 300, 0,
> 0);
> >> > >  reslice.SetStencil(test);
> >> > >  reslice.SetOutputExtent(0,
> 511,0,804,0,0);
> >> > >
> >> > > but I am getting this error message:
> >> > >
> >> > > "The update extent specified in the
> information
> >> for
> >> > output port 0 on algorithm
> >> vtkTrivialProducer(086731A0) is 0
> >> > 511 0 804 0 0, which is outside the whole
> extent 100
> >> 300 250
> >> > 300 0 0."
> >> > >
> >> > > What I am doing wrong?? How I ll set the
> stencil
> >> > inside my Image bounds?
> >> > >
> >> > > thanks in advance!
> >> > >
> >> > > Elias
> >> > >
> >> > >
> >> > >
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