摘要 |
A method for assisting a user to designate a target as viewed on a video image display (fig. 1, 18) by use of a user operated pointing device (20). the method includes the step of evaluating (16) prior to target designation one or more tracking function indicative of a result which would be generated by designating a target at a current pointing direction of the pointing device (20), and providing to the user, prior to target designation, an indication indicative of the result. |