[vtk-developers] Image rendering bug?

[Ben Payne]

Hi-

I was recently playing around with measuring pixel coordinates for an
image, and I found that the dimensions of the image in world space
were one "pixel" less on each axis than the dimensions of the source
image.

After turning texture filtering off so that I could count the
individual pixels, I discovered VTK is clipping all the pixels along
the borders of the image in half!  Can anyone shed some light on
what's going on here?  I wasn't expecting the vtkImageActor to clip
any part of the image with just the default settings.  If this is the
expected behavior, how do I get VTK to display the full image?

Test and screenshot are attached.

Thanks,
Ben
-------------- next part --------------
A non-text attachment was scrubbed...
Name: imageTest.png
Type: image/png
Size: 13821 bytes
Desc: not available
URL: <http://public.kitware.com/pipermail/vtk-developers/attachments/20110816/b25615ed/attachment-0002.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: imageTest.cxx
Type: application/octet-stream
Size: 1020 bytes
Desc: not available
URL: <http://public.kitware.com/pipermail/vtk-developers/attachments/20110816/b25615ed/attachment-0001.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: noise.png
Type: image/png
Size: 38865 bytes
Desc: not available
URL: <http://public.kitware.com/pipermail/vtk-developers/attachments/20110816/b25615ed/attachment-0003.png>