| 摘要 |
A guide system for use by a user who performs an operation in a defined threedimensional region is disclosed, the system including a data processing apparatus for generating images of the subject of the operation in co- registration with the subject, a display for displaying the images to the user, a probe having a position which is visible to the user, and a tracking unit for tracking the location of the probe by the system and transmitting that location to the data processing apparatus, the data processing apparatu s being arranged, upon the user moving the probe to a selection region outside and surrounding the defined region, to generate one or more virtual buttons, each of the buttons being associated with a corresponding instruction to the system, the data processing apparatus being arranged to register a selection by the user of any of the virtual buttons, the selection including positioni ng of the probe in relation to the apparent position of that virtual button, an d to modify the computer-generated image based on the selection. |
