CODEWITHSUNDEEP
pythonnumpygaussian
John Crow
John Crow

Reputation: 947

Generate a Gaussian kernel given mean and standard deviation

This question here addresses how to generate a Gaussian kernel using numpy. However I do not understand what the inputs used kernlen and nsig are and how they relate to the mean/standard deviation usually used to describe a Gaussian distribtion.

How would I generate a 2d Gaussian kernel described by, say mean = (8, 10) and sigma = 3? The ideal output would be a 2-dimensional array representing the Gaussian distribution.

Upvotes: 1

Views: 1576

Answers (1)

MSeifert
MSeifert

Reputation: 152647

You could use astropy, especially the Gaussian2D model from the astropy.modeling.models module:

from astropy.modeling.models import Gaussian2D

g2d = Gaussian2D(x_mean=8, y_mean=10, x_stddev=3, y_stddev=3)  # specify properties

g2d(*np.mgrid[0:100, 0:100])  # specify the grid for the array

enter image description here

Upvotes: 2

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