function [x_shift y_shift]=shifts(filename)

x_shift=zeros(1,size(filename,2));
y_shift=zeros(1,size(filename,2));

for i=1:size(filename, 2);
    H=ransac(filename{i},filename{i+1});
    x_shift(i)=floor(H(2,3));
    y_shift(i)=floor(H(1,3));
end

    