openpiv.filters._gaussian_kernel

openpiv.filters._gaussian_kernel(half_width: int = 1) → ndarray[source]

A normalized 2D Gaussian kernel array

Parameters: half_width (int) – the half width of the kernel. Kernel has shape 2*half_width + 1 (default half_width = 1, i.e. a Gaussian of 3 x 3 kernel)

Examples

>>> from openpiv.filters import _gaussian_kernel
>>> _gaussian_kernel(1)
array([[ 0.04491922,  0.12210311,  0.04491922],
   [ 0.12210311,  0.33191066,  0.12210311],
   [ 0.04491922,  0.12210311,  0.04491922]])