matthiasm@8: function lm = localmax_logical(mat,n)
matthiasm@8: 
matthiasm@8: diffmat = [mat(1,:)*0; sign(diff(mat))]; % !!!! attention rethink the 0!!!!!
matthiasm@8: convolver = -[ones(n,1);-ones(n,1)];
matthiasm@8: lm = conv2(diffmat,convolver,'same') == 2 * n;