Switch to ASTRA direct_FP3D/BP3D interface #2134
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Description
Switch the Astra wrapper to use Astra's
direct_FP3Danddirect_BP3Dfunctions for 3D Astra geometries. These functions provide a more concise interface and avoid unnecessary data copies.This interface is supported from Astra 2.0. Starting from Astra 2.3, these functions also transparently accept DLPack tensors (including torch cpu/cuda tensors).
Example Usage
All unit tests pass for me. This is a result from the CIL PyTorch integration hackathon, and has therefore only seen limited further testing.