How to graph/plot 2D Laplacian of Gaussian (LoG) function in MATLAB or python?
Hello.
I am trying to make a 3-D graph similar to the one below, that illustrates the 2-D Laplacian of Gaussian (LoG) function. How can I accomplish this through MATLAB or python? Code snippets would be greatly appreciated.
I have found that we can plot the gaussian using this method, but I am looking for how to plot the laplacian of gaussian.
Solution
You can use the discrete laplacian function del2:
N = 3;
x=linspace(-N, N,30);
[X,Y]=meshgrid(x,x);
z=del2((1000/sqrt(2*pi).*exp(-(X.^2/2)-(Y.^2/2))));
surf(X,Y,z);
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