An information processing apparatus can display an object image and a line drawing overlapping each other. An area of the object image can be zoomed (enlarged or reduced) while the line drawing is left the same size, or optionally the line drawing can be zoomed in proportion to the object image zooming, so that the information displayed by the relative positional relationship between the object image and the line drawing is maintained.

Patent application for computer-assisted surgery system using gestures to control workflow and software operation. Gestures detected using 3D localization apparatus.