Abstract
This chapter takes a small detour and discusses some numerical approximations that will be necessary to theoretically compute electron microscopy images. Specifically, digital sampling (pixels and levels) and all the important fast Fourier transform (FFT) are introduced. The FFT will be the principle tool to speed up later calculation. If you are familiar with these topics, this chapter may be skipped.
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Kirkland, E.J. (2020). Sampling and the Fast Fourier Transform. In: Advanced Computing in Electron Microscopy. Springer, Cham. https://doi.org/10.1007/978-3-030-33260-0_4
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DOI: https://doi.org/10.1007/978-3-030-33260-0_4
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