I got a ridiculous T matrix when using ICP, could you please help me figuring out what happened?
(1) This is two sets of cloud points, actually, they are quite close. (scale bar below is 1.5 meters)

(2) ICP is used to see the difference

(3) BUT, the results are quite strange. Translation is too large to believe!

Question:
(A) Is the unit "meter" ?
(B) If yes, why this problem occurred? How to solve it?
Thanks a lot!