A simple gaussian is not always a good approximation of the in-plane PSF.
When using sum of gaussians to model the in-plane OTF, good approximations for a wide range of reconstruction kernels can be achieved.
This PR adds support for sum of gaussian OTF modelling.
Both, modelling in the frequency domain (OTF) and in the spatial domain (PSF) are supported.
A simple gaussian is not always a good approximation of the in-plane PSF. When using sum of gaussians to model the in-plane OTF, good approximations for a wide range of reconstruction kernels can be achieved. This PR adds support for sum of gaussian OTF modelling. Both, modelling in the frequency domain (OTF) and in the spatial domain (PSF) are supported.