. "The method of claim 1, in which the sequence of positions is defined by T: {pn}: {(x1, y1, t1), (x2, y2, t2), . . . , (xN, yN, tN)}, where T is the trajectory, p is an nth position of the object, (x, y, t), are coordinates of the position, and N is the duration of the trajectory. 3." . . .