[vtkusers] Volume rendering prob contd..

[Pan, Tony C (Research)]

In your original code, you set the extent to 0 170 0 138 0 20.  This would cause the problem you're
describing

Extent in VTK are the array indices.  Your image with dimension 170x138x21 would have extents
0,169,0,137,0,20.

The z extent for the reader should correspond to your filename suffix.  So if your files are numbered
from 1 to 21, you want to use 1 and 21 for z extent.

Tony

-----Original Message-----
From: mista.tapas at gmx.net [mailto:mista.tapas at gmx.net]
Sent: Tuesday, November 05, 2002 11:05 AM
To: vtkusers at public.kitware.com
Subject: [vtkusers] Volume rendering prob contd..


Hi.. Sorry,

I should have said more about how it does not work. Well, when we display
the Volume, it seems to me as if the pixels somehow get adressed wrongly.
Everyone has drawn Images from char buffers to the screen, when u mix up the
dimensions, one gets a pretty weird picture, where parts of the original image are
sometimes visible, but enlarged with intermixed pixels from other region.s
This is exactly how our volume looks. We can make out one clear feature of the
pictures (we used 21 identical grey scal epictures to make up the volume)..


So, the Volume shows up on the screen, the dimensions 170x138x21(pics) seem
to be right, but somehow the pixels are adressed wrongly.. any hints?

Thanks Florian Schmidt

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