Re: [Rtk-users] Forward projection rotation matrix from gantry and couch angles

Hi, I would rather suggest another version of AddProjection which uses the source position, detector origin position, u and v vectors. Be aware that FBP assumes that the rotation is

[Rtk-users] Forward projection rotation matrix from gantry and couch angles

Dear developers, For DRR image calculation i use a ThreeDCircularProjectionGeometry class with AddProjection method. The default rotation direction is around Y-axis in LPS coordinates (Z-axis in RAS coordinates in 3D Slicer) as i understand from the documentation. Should i calculate rotation

[Rtk-users] Forward projection to generate realistic fluoroscopic images

Hi all, I am using the JosephForwardProjection of RTK through python wrapper. I am trying to generate realistic fluoroscopic images from a chest CT-volume. I've setup the image spacing and pixels based on the dimensions of the detector of a c-arm. I can generate projections over different

Re: [Rtk-users] Forward Projection

Hi, ForwardProjectionImageFilter is a purely virtual class. Try for example Joseph's projector . The forward projectors in RTK need two inputs : empty projections in which to project (input 0) and the volume to

Re: [Rtk-users] Forward Projection

Hi Yoonho, my guess would be that FWDType possesses a SetInput method, from what  I understand from the inheritance diagram. Also make sure to define a geometry using an instance ofrtk.ThreeDCircularProjectionGeometry. I encourage you to have a look at the class documentation:

[Rtk-users] Forward Projection

Hi I'm trying to make an sinogram of shepp logan phantom. But I don't know how to do it using RTK... Do I need to define geometry for this? Here's what I did so far image = itk.imread('C:\\Users\\USER\\Jupyter Notebook\\ITK-RTK\\shepp_logan_phantom.png', itk.F) array =

[Rtk-users] Forward Projection Geometry

Hi, I am a new user of RTK, and I want to use the ForwardProjectionFilters. I would like to ask Mr. Simon Rit some questions about rtk::ThreeDCircularProjectionGeometry class. How to change the input itkImage orientation using the same geometry input? The itkOrientImageFilter seems to have no