It seems to be similar to Parker weigth~ DOI: 10.1118/1.1450132
Some angles have been overlooked?

Ya, I've seen algorithms like that. I worked on similar things when I worked in the CT group at GE.

I have no plans to add such an algorithm like that to LEAP, but you could use LEAP as a library to implement those algorithms yourself.

I do take requests from users when adding new features to LEAP. If enough people want a certain feature and it isn't too much work, I'll do it.

It's truly impressive that you have done similar work at GE. In my opinion, the LEAP toolkit is the best I’ve encountered so far. I believe that motion correction is something many others would want as well, and its inclusion could attract even more users. It's a shame that there are no plans to add it yet, but I appreciate your consideration. Thank you for always providing such prompt responses.

Does the LEAP library include a function for "cone-parallel geometry via row-wise fan-to-parallel rebinning"?

My current job is in SPECT, so my work for LEAP is a hobby of mine that I do in my spare time. I do plan to continue to add features, but there is a limit in what I can do.

Anyway, what you speak of is commonly referred to as cone-parallel coordinates. It is actually near the top of my TODO list for LEAP. Have you seen this list on the LEAP homepage here?

I also hope that LEAP can support motion correction feature. And I think that Leap already supports fast projection by GPU code, so projection based correction algorithm may be easy for @kylechampley. So I added another paper to here.
Revised_Projection_based_dynamic_tomography__PMB.pdf