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Improve com crop#350

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ercius wants to merge 7 commits intoOpenChemistry:masterfrom
ercius:improve_com_crop
Open

Improve com crop#350
ercius wants to merge 7 commits intoOpenChemistry:masterfrom
ercius:improve_com_crop

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@ercius
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@ercius ercius commented Dec 9, 2025

I previously used a square mask to reject electrons outside the central beam. This is not ideal. I thought that making a radial mask would be slow, but it turns out to be slightly faster per frame. I estimate about 4 seconds saved for a medium sized 1kx1k sparse dataset and a more accurate measurement. Win-win!

This needs to be tested before merging. Ill update when it looks good to merge.

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