Hi Daniel, I don't see how moving the source and the detector could trigger a drastic drop in intensities. If you can send two geometry files (before and after the drop), we can try to have a look. Best regards, Simon
On Sun, Feb 11, 2018 at 8:18 AM, Daniel Xun Lin <danielx....@gmail.com> wrote: > Hi, > > I am using the CUDAForwardProjection functionality of RTK through the > SimpleRTK wrapper. I am trying to generate DRRs that are realistic and > simulates fluoroscopic images of the structure and thus far I've setup the > image spacing and pixel based on the dimensions of the C-arm that was used > to acquire the CT and the fluoroscopic images and have gotten good results > when the detector is simulated to have all angles at 0. > > However, when I attempt to simulate movement of the model (by changing the > X/Y coordinate on the projection image of isocenter or by modifying the X/Y > source offset), the overall intensity of my projection image sees a drastic > drop. > > It would be greatly appreciated if anyone could advise on whether this may > be an issue of me incorrectly setting my ConstantImageSource or if I am > simulating the offset of my structures incorrectly. > > I apologize if I am vague on any points or if anything is unclear, please > let me know. > > Thank you, > Daniel Xun Lin > > _______________________________________________ > Rtk-users mailing list > Rtk-users@public.kitware.com > https://public.kitware.com/mailman/listinfo/rtk-users > >
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