% generates K circles of radius R onto an image with dimensions nx, ny
% for example: im=fake_inout_circ(100,100,10,10)
function out=fake_inout_circ(nx,ny,r,k)

inout=zeros(nx,ny);
for i=1:k
    x=r+ceil((nx-2*r)*rand);
    y=r+ceil((ny-2*r)*rand);
    inout=inout+circ(nx,ny,x,y,r);
end

out=inout;