clear all
u0_color = imread('two.jpg');
u0_color = double(u0_color);
u0(:,:) = u0_color(:,:,1);
u0 = u0+0.1*max(max(u0))*randn(size(u0))
figure(1)
imagesc(u0, [0 255]); colormap(gray);axis off
axis image;
pause(1)
[phi,c1,c2] = ActiveContours_const(u0, 0.1 * 255 * 255,1, 1,100);