Rainer Heintzmann
Rainer Heintzmann is a professor of Physical Chemistry at the Friedrich-Schiller University Jena, and heads the microscopy research unit at the Leibniz Institute of Photonic Technology in Jena, Germany. His research focuses on methods for imaging cellular function at high resolution and developing techniques to measure multidimensional information in small biological objects such as cells, cellular organelles or other small structures of interest. He developed structured illumination, pointillism, image inversion interferometry and optical photon reassignment and is highly interested in computer-based reconstruction and inverse modelling methods such as deconvolution.
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Many multidimensional functions (e.g. a Gaussian) can be written in a (generalized) separable form.
SeparableFunctions.jl is a package that calculates and represents separable functions efficiently.
Upon construction of a function, one-dimensional representations are pre-calculated and effienctly represented in various ways to the user.
Compared to a non-separable calculation, this yields significant speed improvements for both CPU and GPU-code alike. Radial functions are also supported.