Lisa

[opt_einsum](https://optimized-einsum.readthedocs.io/en/stable/) supports sparse

The code used for interpolation is basically all in this file of our Blender add-on https://github.com/LivelyLiz/OptFlowCam/blob/main/src/optFlowCam/interpolation.py The equations we use there look a bit different than in our paper but...

Did you come to a conclusion on this?