| 摘要 |
Linear method for performing head motion estimation from facial feature data, the method comprising the steps of: obtaining first facial image and detecting a head in the first image; detecting position of four points P of said first facial image where P= {p1, p2, p3, p4}, and pk = (xk, yk); obtaining second facial image and detecting a head in the second image; detecting position of four points P' of the second facial image where P'= {p'1, p'2, p'3, p'4} and p'k = (x'k, y'k); and, determining the motion of the head represented by a rotation matrix R and translation vector T using the points P and P'. The head motion estimation is governed according to an equation (formula (I)), where formula (II) represents camera rotation and translation respectively. |
