function testGauss1
%F=imread('kids.tif');
F=rand(255);
times=[0]; %bogus value

for sigma = 1:15  %backwards: 15:-1:1
    tic;
    H=imfilter(F, Gauss1(sigma)', 'conv', 'replicate');
    H=imfilter(H, Gauss1(sigma), 'conv', 'replicate');
    times=[times; toc];
    imshow(H);
    drawnow;
    pause;
end

%times(2:end)
%plot(times(2:end))