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JJPPeters / clTEM

OpenCL accelerated multislice simulation for electron microscopy.
https://jjppeters.github.io/clTEM/
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non-parallel STEM suffers from aliasing issues #120

Closed JJPPeters closed 3 years ago

JJPPeters commented 4 years ago

For non-parallel StEM configurations, the moving potentials create aliasing issues that create a pattern in the resulting STEM image. Particularly prevalent when the STEM pixel size is smaller than the potential image pixel size.

JJPPeters commented 3 years ago

This is just an issue with aliasing, as the STEM pixel moves, the grid defining the potentials move. The aliasing of this grid leads to the artefacts.

I think I have resolved this by snapping the potentials grid to the same grid for all STEM pixels