Closed JMLiu-SEU closed 2 years ago
the left side and right side are two parallel artifacts
more explicit if adjust the window level
anlges=linspace(0,2*pi,400)
repeats 1 angle (0==2pi) so you got extra artefacts in that direction.
If you just make `angles=linspace(0,2pi,401);angles(end)=[]or the equivalent
angles=linspace(0,2pi-2pi/400,400);` they go away.
thankyou so much
Expected Behavior
I made an ideal spherical shell phantom (3D tomography) and using Ax to generate projections and use FDK to reconstruct. the geometry are set to fixed ratio of default geometry and the geo.accuracy is set to 0.5. the num of projs are 400, I think is sufficient for fdk.
Actual Behavior
The reconstructed images are added two paralleal streak artifacts compared with phantom I made, do not know why. just copy the code below into a .m file into tigre root folder will reproduce the result
Code to reproduce the problem (If applicable)
Specifications