Electron tomography algorithms in scanning transmission electron microscopy
Different weighting filters used in tomographic algorithms are investigated. Algorithms for the recovery of tomographic structures are produced for general application in graphic processors. Software for a Carl Zeiss Libra 200FE microscope that enables us to record a series of projections in the STEM mode is developed. Calculation experiments show the improvement in tomogram quality when using cosine and 1/z2 filters instead of a linear filter at high noise levels for objects larger than 25 points.