source: proiecte/pmake3d/make3d_original/Make3dSingleImageStanford_version0.1/third_party/torr/torr_gauss_mask.m @ 37

%       By Philip Torr 2002
%       copyright Microsoft Corp.
% %
% % HISTORY
%   2001 Philip Torr (philtorr@microsoft.com, phst@robots.ac.uk) at Microsoft
%   Created.
% 
%  Copyright © Microsoft Corp. 2002
%
%
%       Returns a W x W matrix with a unit amplitude Gaussian function of
%       standard deviation SIGMA.  The Gaussian is centered within the matrix.
%
function gmask = gauss_mask(w, sigma)

        ww = 2*w + 1;

        [x,y] = meshgrid(-w:w, -w:w);

        gmask = 1/(2*pi) * exp( -(x.^2 + y.^2)/2/sigma^2);

        gmask = gmask / sum(sum(gmask));