Return a copy of `image` with a gaussian blur applied across axies `axis` with a given standard deviation and the number of standard deviations to stop at.
Evaluate the gaussian/normal distribution for a given `x`, `stDev` and `mean`.
Create a 1D matrix of a discrete gaussian distribution with a given standard deviation and the number of standard deviations to stop generating at. The result is mirrored with guaranteed odd length.
A gaussian filter (aka gaussian blur) is a convolution (:d:mod:daffodil.filter.convolve) using a matrix created from a gaussian distribution.