gaussian_2d, a MATLAB code which evaluates a general Gaussian function of a 2D argument.
A formula for the Gaussian function at the point (x,y) is:
g(c,x,y,xmu,ymu,xsigma,ysigma,A) = c * exp ( 1/2 xy' * A * xy )where xy is the vector
[ ( x - xmu ) / sigma, ( y - ymu ) / sigma ]and A is a positive definite symmetric matrix.
The computer code and data files made available on this web page are distributed under the GNU LGPL license.
gaussian_2d is available in a MATLAB version.
gaussian, a MATLAB code which evaluates the Gaussian function and its derivatives.