[vtkusers] Zooming the vtkImageViewer

[Eduard Schreibmann]

It is much slower, and the quality of the final image is poorer .
Using vkRenderWindow instead of  vtkImageWindow is 2-4 times slower .


Brian Alexander Todd wrote:

> Erik,
>
> Another possibility is to texture your image onto
> a plane and use a vtkRenderWindow instead of
> vtkImageWindow.  Then zooming is all taken care of
> for you.
>
> Brian
>
> At 08:58 AM 6/8/00 +0100, Matt Clarkson wrote:
> >You do this by connecting the volume
> >to a vtkImageReslice filter, and extracting
> >a 2D slice and connecting this to the viewer.
> >You set the vtkImageReslice filter
> >to extract a 2D image, ie. Set the extent to
> >0 255 0 255 0 0
> >
> >The vtkImageReslice can then be adjusted to give
> >different fields of view. Effectively you are resampling
> >a 2D image each time rather than a 3D volume
> >
> >I didnt know that the image viewer had a camera
> >as such.
> >
> >Anyway, hope this helps
> >
> >Matt
> >
> >
> >Erik Sobel wrote:
> >>
> >> Does anyone know how to zoom an image in a vtkImageViewer (without
> >> resampling the volume - since this messes up other parts of my
> >> pipeline)?   Is it possible to just grab the camera used by the
> >> vtkImageViewer and zoom it?
> >>
> >> Thanks,
> >> Erik
> >>
> >> _______________________________________________
> >> This is the private VTK discussion list.
> >> Please keep messages on-topic. Check the FAQ at:
> <http://public.kitware.com/cgi-bin/vtkfaq>
> >> vtkusers mailing list
> >> vtkusers at public.kitware.com
> >> http://public.kitware.com/mailman/listinfo/vtkusers
> >
> >--
> >Computational Imaging Science Group
> >Radiological Sciences,
> >Guy's Hospital
> >London Bridge
> >London
> >SE1
> >9RT
> >Tel: +44 (0)20 7955 2380
> >Fax: +44 (0)20 7955 4532
> >E-mail: m.clarkson at umds.ac.uk
> >WWW: http://carmen.umds.ac.uk/m.clarkson
> >
> >_______________________________________________
> >This is the private VTK discussion list.
> >Please keep messages on-topic. Check the FAQ at:
> <http://public.kitware.com/cgi-bin/vtkfaq>
> >vtkusers mailing list
> >vtkusers at public.kitware.com
> >http://public.kitware.com/mailman/listinfo/vtkusers
> >
> >
>
> _______________________________________________
> This is the private VTK discussion list.
> Please keep messages on-topic. Check the FAQ at: <http://public.kitware.com/cgi-bin/vtkfaq>
> vtkusers mailing list
> vtkusers at public.kitware.com
> http://public.kitware.com/mailman/listinfo/vtkusers