Si corro: import numpy as np import cv2 def changes(): rmat=np.eye(4) tvec=np.zeros(3) (rvec, jacobian)=cv2.Rodrigues(rmat) print rvec for i in range(2): changes() Yo obtengo: [[6.92798859e-310] [2.19380404e-316] [1.58101007e-322]] [[0.] [0.] [0.]] Entonces el resultado de los...