Before I run the script, I installed itk and itk-rtk using pip. and then I copied and pasted the whole script in FirstReconstruction.py in a jupyter notebook cell. Do I need any additional installation to use rtk?
Thank you for your answer of second question. 2020년 4월 21일 (화) 오후 5:27, Aurélien Coussat < aurelien.cous...@creatis.insa-lyon.fr>님이 작성: > On Tue, 2020-04-21 at 17:15 +0900, 나윤호 wrote: > > Thank you for replying. > > I'm pretty sure that I haven't changed anything in the example script. > What I just did is copy and paste and run it. > > > What process did you follow in order to run it? Are you running it from a > shell command line (as in "python FirstReconstruction.py") or from a Python > command line (running "python" then copy-pasting everything) ? Could you > provide the exact steps you followed in order to reproduce the problem? > > and could you explain me how to translate(?) does documents into pythonic > way? > (I don't know much about Clang) > > for example, in the link you gave me it says > > *rtk::FDKConeBeamReconstructionFilter< TInputImage, TOutputImage, > TFFTPrecision > Class Template Reference * > > I empirically know that in python I have to type something like > > *rtk.FDKConeBeamReconstructionFilter[InputImage, OutputImage, > FFTPrecision]* > > Am I right?? > > > Almost, but your intuition is correct! From > rtkFDKConeBeamReconstructionFilter header file ( > http://www.openrtk.org/Doxygen/rtkFDKConeBeamReconstructionFilter_8h_source.html), > you can see that default values are already provided for TOutputImage and > TFFTPrecision. From Python's point of view only a single argument is > therefore required (TInputImage). You can see an example of > FDKConeBeamReconstructionFilter starting from the 65th line of > FirstReconstruction.py. > > Good luck! > > Aurélien. > > > 2020년 4월 21일 (화) 오후 4:58, Aurélien Coussat < > aurelien.cous...@creatis.insa-lyon.fr>님이 작성: > > Hi, > > Your first error is really strange. The "geometry" variable is supposed to > be typed as rtkThreeDCircularProjectionGeometry (defined line 14), while > according to your error message it is of type > rtkFDKConeBeamReconstructionFilter. Are you sure you haven't somehow > altered the example script? > > About your second question, you can use rtkFDKConeBeamReconstructionFilter > and provide it a parallel geometry. See the documentation for more details > : > http://www.openrtk.org/Doxygen/classrtk_1_1FDKConeBeamReconstructionFilter.html > . > > Don't hesitate if something remains unclear! > > Aurélien. > > On Tue, 2020-04-21 at 12:06 +0900, 나윤호 wrote: > > Hi. > I'm a newbie to ITK and RTK. > I'm currently using python not C++ > > so I installed ITK package and RTK package using > > pip install itk > pip install itk-rtk > > using ITK seems OK, but I'm having difficulties with RTK. > > When I run the ITK example code, It worked well. > but when I tried to run the FirstReconstruction.py in the github, > error occurrs. > > ---------------------------------------------------------------------------AttributeError > Traceback (most recent call > last)<ipython-input-1-be2ee9c70d3d> in <module> 19 for x in > range(0,numberOfProjections): 20 angle = firstAngle + x * angularArc / > numberOfProjections---> 21 geometry.AddProjection(sid,sdd,angle) 22 > 23 # Writing the geometry to disk > AttributeError: 'rtkFDKConeBeamReconstructionFilterIF3' object has no > attribute 'AddProjection' > > > > How can I fix this problem? > > and I have another question. > I want the reconstruct the sinogram image to phantom. > > usually what I did was using skimage.transform.iradon(). > what should I use in RTK to do Inverse radon transform or Filtered back > projection method? > > > _______________________________________________ > Rtk-users mailing > listRtk-users@public.kitware.comhttps://public.kitware.com/mailman/listinfo/rtk-users > >
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