Projector can't work correctly with scatter about deepdrr HOT 2 CLOSED

First, the VNet: we're currently working on a replacement because we've found it to be brittle. Most of our own recent experiments are using thresholding for segmentation. In addition to just the VNet acting silly, there can be other issues in the I/O of your CT scan, so make sure you check that your data input etc. works as expected.

Scatter: Depending on the issue above, scatter may be a direct derivate of this, i.e., segmentation did not work, the resulting projection is empty, so scatter throws an error. There may be related issues. All of this being said, we do not use scatter right now in our simulations. This is because the scatter kernels have been trained on very little data and thus are not really high fidelity. Most radiographs will have some scatter reduction applied before you see them in reality, anyway. We have been working on some MC-based scatter but have not gotten around to integrating it yet. There is also no ETA on when this will be done.

So TL/DR: switch scatter off and use threshold-based segmentation for now; it should get you very close to where you want to be.

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Thanks for replying! Appreciate your work

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