[vtkusers] reading amira data with vtk

[Seema Jaisinghani]

Hi Patrick,

I don't know how you are loading images in Amira. Are
your ct images uniformly spaced or vary in z? Anyway,
you will be able to get them as a stack if uniformly
spaced by just selecting all the single files when
loading. Amira loads them as a single object. If not
spaced uniformly, you can still get them as a
multichannel field by specifying the distance between
every image in a text file channel.info. 
Now save this single object as an amira mesh object
i.e. stackname.am
this is a binary file with amira mesh header. It is
simply volume data. Remove this header and replace
with vtk files header.Your header will be something
like-
# vtk DataFile Version 3.0
Raw Volume Data
BINARY
DATASET STRUCTURED_POINTS
DIMENSIONS  101  101  101 (these areth dimensions of
your stack)
ORIGIN 0 0 0
SPACING 0.5 0.5 0.5 (this is the voxel size in your
original stack)
POINT_DATA 1030301
SCALARS atomId unsigned_char 1
LOOKUP_TABLE default
.
...data

use vtkStructuredPointsReader to read this file and
send the output to vtkStructuredPoints

Hope this helps,
Seema
--- Patrick Schuska <schuska at dbi.udel.edu> wrote:
> Hi,
> I have to represent amira objects, which I created
> in amira out of
> ct-slices with vtk. How can I read the images out of
> amira into vtk.Is
> it possible at all?
> Thanks, Patrick
> 


__________________________________
Do you Yahoo!?
The New Yahoo! Shopping - with improved product search
http://shopping.yahoo.com