params.n=400; % size of image (pixels)
img=zeros (params.n); % start with a blank image

% pick random parameters for each Gabor
for i=1:5
    params.center = 2*pi*(rand(1,2)-0.5);
    params.orientation = pi*rand(1); % radians (pi/4 = 45 degrees)
    params.width =rand (1); % 1/e half params.width of Gaussian
    params.sf =12*rand(1) ; % sf of sinewave carrier cycles/image
    params.phase = 2*pi*rand(1); % spatial params.phase of sinewave carrier (radians)
    params.contrast =rand(1); % contrast from 0 to 1
    img = insertGabor(params, img);
end

% show the image using the usual conmmands
figure(1)
clf

% scale Gabor between 0 and 255
img = scaleMat(img, [0, 255]);

image (img);
axis equal
axis off
colormap(gray(256));