Abstract: In this paper,a binocular vision system and a method for determining 3-D motion parameters of an object from binocular sequence images are introduced.The main steps include camera calibration,the matching of motion and stereo images,3-D feature point correspondences and resolving the motion parameters.Finally,the experimental results,acquiring the motion parameters of the objects with uniform velocity and acceleration in the straight line based on the real binocular sequence images by the mentioned method,are presented.