function [color_img] = color(img1, img2, img3)

if (img1==0)
    img1 = zeros(1000,1000);
end;

if (img2==0)
    img2 = zeros(1000,1000);
end;

if (img3==0)
    img3 = zeros(1000,1000);
end;
        
color_img = cat(3, uint16(double(img1).*4), uint16(double(img2).*4), uint16(double(img3).*4));
figure, imagesc(color_img);
        
                
        