1. A method of tracking an object, the method comprising: measuring displacement of the object; acquiring pose information of the object from an image, the pose information being post-movement pose information after the displacement of the object, the acquiring pose information of the object including, extracting feature points of the object, acquiring contour information of the object from the feature points of the object, obtaining a convex hull for the feature points using the contour information, and calculating location information and direction information for an end portion of the convex hull; obtaining a particle of the object using the measured displacement; and tracking the object using the pose information of the object and the obtained particle.