[vtkusers] Error in vtkImageChangeInformation

[Matthias Zangl]

Hello David,

thanks for trying us to help. But it doesn't seem to work anyway. First I
tried changing the data-extent to the values you suggested - changed
nothing. I also tried to use the headsq-data, but even here I am running
into the same problem (I see nothing when I use the transformation).

I am of the opinion that it depends very much on the version of the used vtk
(and I am using the nightly build from 06th of June).

Bye,
Matt

----- Original Message -----
From: "David Gobbi" <dgobbi at irus.rri.on.ca>
To: "Matthias Zangl" <zangl at ism-austria.at>
Cc: <vtkusers at public.kitware.com>
Sent: Friday, June 08, 2001 7:40 PM
Subject: Re: [vtkusers] Error in vtkImageChangeInformation


> Hi Matthias,
>
> When I tried your example with the 'headsqr' image from
> the vtk example data it worked fine.  The problem might
> be with the extent you set in the data reader, if your
> images are 512x512x120 then you should set up the
> reader like this:
>
> reader.SetDataExtent(0,511,0,511,1,120)
>
> I'll take a look through vtkImageChangeInformation and
> try to figure out why it was reporting the error, however.
>
>  - David
>
> On Fri, 8 Jun 2001, Matthias Zangl wrote:
>
> > Hello!
> >
> > I have already posted some mails concerning a problem
> > with vtkImageReslice. I am reading some slices of an
> > object from TIF-files.
> > And I can view these slices with a vtkImageViewer. But
> > I have to make slices not only along the Z but also
> > along the X and Y axis. And it should be possible to
> > create free slices through a given point and along
> > free angles around every axis.
> > But when I do that I only get an empty screen.
> > And I suppose that I am turning the object around
> > (0,0,0) and not the center of the image.
> > So I got the message from the mailinglist that I
> > should move the object to (0,0,0) and then turn it.
> > But this doesn't work.
> > I found in the header of vtkImageReslice a hint that I
> > should use vtkImageChangeInformation to put the origin
> > to the center of my object.
>
>
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