[Rtk-users] Problems with --like and --dimension parameters of rtkforwardprojections and rtkfdk

[Simon Rit]

Hi Anais,
It's a bit hard to check what's going on without the command lines. Can you
try to send the command lines that give you some problems, e.g. based on
the forwardprojection example?
Thanks,
Simon

On Mon, Jan 29, 2018 at 12:03 PM, <anais.capouillez at student.uliege.be>
wrote:

> Hi,
>
> My name is Anaïs, I’m a student in computer sciences, and I'm currently
> doing my internship, which consists partly to do a tomographic
> reconstruction.
>
> I use rtk to reconstruct my model, but I have problems when I use
> rtkforwardprojections and rtkfdk with –like or –dimension.
> Indeed, if I use them with the default parameters, it works correctly, but
> when I specify –like or certain values of –dimension the reconstruction
> isn’t correct.
> For instance if I use the example file muCT.mha as my model, it works
> perfectly with the default parameters, but if I choose –like=muCT.mha, in
> my reconstruction file there are mostly black voxels.
> I also saw that the example in the scripts for forward projections (
> http://wiki.openrtk.org/index.php/RTK/Scripts/ForwardProjection) works
> when the spacing, the origin, and the dimension specified to rtkfdk are the
> same than the model.
>
> I wanted to know why it doesn’t works when I use –like.
> Is there a relation between the geometry and dimensions and that’s why I
> have problems (for instance due to the source being too close to the
> object)?
>
>
> Thank you very much.
>
> Anaïs
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