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theHamsta / pyronn-torch

PyTorch bindings of PYRO-NN (https://github.com/csyben/PYRO-NN)
MIT License
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Gradient to source position and rotation matrix #1

Open shiyangc-intusurg opened 4 years ago

shiyangc-intusurg commented 4 years ago

Is it possible to add the gradient to the location and rotation matrix of the source so that it can be optimized as well?

theHamsta commented 4 years ago

Hi. This is not possible with pyronn at the moment. I might add this feature in future since I already have a draft for it.

If you want to I can inform you over this issue if there's any progress in that regard.

shiyangc-intusurg commented 4 years ago

That would be fantastic. Whenever you feel comfortable, you can release it as a separate branch. People may be interested in contributing to it. Thank you so much for your work.

shiyangc-intusurg commented 4 years ago

Hi, I have been looking for way to solve the gradients to projection matrix in the past week. However, I have not found the proper math to solve this problem. The closest one I got is from a paper called "Structure from Motion without Correspondence from Tomographic Projections by Bayesian Inversion Theory". Do you mind sharing your ideas of how to solve this problem?