function o = display_image_pts(P)
I = zeros(200,200);
for i = 1:size(P,2)
    p = P(:,i);
    x = 100 + round(80*p(1));
    y = 100 + round(80*p(2));
    if x < 201 & x > 0 & y < 201 & y > 0
        I(201-y,x) = 1;
    end
end
figure(107);
imagesc(I);
