integrate2d.m

image thresholding otsu method

function im2 = integrate2d(im)

im2 = cumsum(im')';

% % Old Code
% xs = size(im,2);
% ys = size(im,1);
% 
% im2 = zeros(ys,xs);
% im2(:,1) = im(:,1);
% for i = 2:xs
%     im2(:,i) = im2(:,i-1) + im(:,i);
% end
%