[Rtk-users] Is there a way to signal to rtk-ProjectionsReader that RawImage has files and columns transposed?

[Fernando Hueso González]

Hi Simon, thanks for the swift reply.

> No, there is no way to transpose your projections. It should be fairly 
> easy to add (in the ProjectionsReader) or to do it before hand with 
> itk. Any contribution to RTK is welcomed.
Sounds good, I will take a look and see if I can provide a PR.
> Now, I'm not sure I follow the long explanation. Is the reconstruction 
> transposed or the projections? If it's the former, so what you really 
> want is to transpose the reconstructed volume. You can do this by 
> setting a rotation matrix to the reconstructed volume with the 
> --direction option of rtkfdk.

Well, the reconstructed volume looks transposed, but it also looks 
completely messed up (everything appears double, etc.), so rotating the 
output wouldn't solve it. Because the reconstruction in MATLAB works 
well, and I know the geometry parameters accurately, I concluded that 
the problem is with the projections themself (also inspired by the fact 
that in MATLAB, I need to use the second coordinate, not the first one). 
It is not completely clear to me a priori what orientation files-columns 
should have based on http://www.openrtk.org/Doxygen/DocGeo3D.html, so I 
made this hypothesis based on the final reconstructed results.


Thanks and best regards,
Fernando.