Hi, I think you should look at rtkfourdfdk <https://github.com/SimonRit/RTK/blob/master/applications/rtkfourdfdk/rtkfourdfdk.cxx> which does what you want. rtk::SelectOneProjectionPerCycleImageFilter will select the projections for you. Can you try to reimplement this in Python? We'll help if you're stuck but this is the right file to use as a basis for your dev. Simon
On Wed, May 13, 2020 at 8:07 AM Zhang, Zhehao <zhehao.zh...@wustl.edu> wrote: > > > Dear all, > > > > I am trying to do the 4D phase-correlated CBCT reconstruction under Python > environment. What I have are the projection data(.mha), geometry info(.xml) > and the repiratory info(.txt). You can check the attachment for the phase > file. I want just to simply ‘divide’ the projections and geometry into > different bins according to the phase information and perform FDK recon > separately, to get several different 3D images with streaks artifacts of > course. The Rooster is not necessary for me. > > > > I have spent lot of time on the given ‘4DROOSTERReconstruction’ example. I > think it used the ReorderProjectionsImageFilter order to do the separation. > However, I am stuck on how to perform it for Python since I didn’t figure > out how to read the phase.txt. Could you please give me some hints and is > it correct to call this order to achieve my goals? > > > > Additionally, I also saw another test example( > https://github.com/SimonRit/RTK/blob/master/test/rtkwarpprojectionstacktofourdtest.cxx) > which seems using ‘PhasesToInterpolationWeights’ , > ‘BackProjectionImageFilter’ and ‘DivideImageFilter ‘ to do this. I am > confused I should follow which way. And I also want to make sure why here > using BackProjectionImageFilter rather than FDKConeBeamReconstructionFilter. > > > > Sorry for these cumbersome questions. Really hope to get some help, which > means a lot for me. Thank you very much. > > > > Sincerely, > > Zhehao > > > _______________________________________________ > Rtk-users mailing list > Rtk-users@public.kitware.com > https://public.kitware.com/mailman/listinfo/rtk-users >
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