Patent ID: 7986840

Claim:
A computer-implemented method comprising: displaying an image frame of a plurality of image frames; receiving from a user a selection including a position of a point on the displayed image frame; overlaying, in response to said receiving the selection of the position of the point, a bounded region on the displayed image frame; displaying, in the bounded region overlaid on the displayed image frame, content relating to another image frame of the plurality of image frames, the content displayed in the bounded region including another position of the point at a different time than the position of the point associated with the received selection; receiving from the user another selection including the other position of the point inside the bounded region; and tracking the position of the point from the displayed image frame to the other image frame based at least in part on (i) the position of the point associated with the received selection and (ii) the other position of the point associated with the received other selection.