Implement FDK filtering on GPU

CERN / TIGRE

TIGRE: Tomographic Iterative GPU-based Reconstruction Toolbox

BSD 3-Clause "New" or "Revised" License

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Implement FDK filtering on GPU #312

Open AnderBiguri opened 3 years ago

AnderBiguri commented 3 years ago

Suprising I don't have an issue for this:

FDK filtering is slow now because its done in the CPU (and does some ugly transposes). We should just accelerate this, it makes no sense to have such a slow version of FDK.

Note: Not all FFT libraries in GPU/CPU are compatible with BSD license.

tsadakane commented 3 years ago

Use cuFFT?

AnderBiguri commented 3 years ago

Sounds good actually.