Angular range problem

[llnl]

Angular range problem

[kylechampley]

Hello. Yes, the 360 is in degrees. You definitely don't have to use the function "leapct.setAngleArray(numAngles, 360.0)"; it is just provided for convenience. All it does is set a numpy array of the projection angles in degrees. It can be specified just as you have shown in your post, except LEAP expects this array to be in degrees instead of radians. This array can have any starting angle and the angles do not have to be equi-spaced. The only requirement is that the array must be a float32 lumpy array and the angles must be in increasing order and the number of angles number match the number of angles you told LEAP to expect.

For your second question, yes, SART with TV is an effective method for sparse view CT reconstruction. In LEAP, we provide an implementation of the ASD-POCS algorithm which is a very effective method in combining SART and TV. Here is the description of ASDPOCS:

https://leapct.readthedocs.io/en/latest/iterative_reconstruction.html#leapctype.tomographicModels.ASDPOCS

Let me know if you have any further questions.

[Stefenfri]

Thanks, it worked!