Re: [Rtk-users] rtk user : FDKConeBeamReconstructionFilter

2018-01-18 Thread Simon Rit
Hi, My experience is too limited to have a good answer. This is probably very task dependent. There are papers on the question of binning: https://doi.org/10.1088/0031-9155/58/5/1433 I don't know of people considering binning of the volume except for iterative reconstruction

Re: [Rtk-users] rtk user : FDKConeBeamReconstructionFilter

2018-01-17 Thread Chao Wu
Hi Simon, I have related questions. Maybe you or someone else has some empirical experience or something like a rule of thumb: We talk about voxels and pixels of a virtual detector at isocenter, so no influence from geometrical magnification. Then we can say that the best practice would be

Re: [Rtk-users] rtk user : FDKConeBeamReconstructionFilter

2018-01-16 Thread Simon Rit
Hi Elena, Please post your questions to the mailing list, they can interest everyone in the community and you may get (better) answers before mine. FDK is very simple: it takes the projections, weight them with the cosine + angular gaps, apply the ramp filter with a kernel adapted to the number of

Re: [Rtk-users] RTK-user

2017-04-17 Thread Simon Rit
Hi, GetImageFromArray seems to be the good solution. Can you give the code that doesn't work (instead of copy pasting what works from the wiki)? Simon On Sun, Apr 16, 2017 at 10:27 PM, sare Borhani wrote: > Dear RTK.User, > > I'm using python wrapped version of RTK. > >