| 摘要 |
A system for controlling a computing apparatus includes a mobile camera and a processing device. One of the mobile camera and the processing device is capable of determining a first relationship between a coordinate space of a media surface and a coordinate space of a camera image field at a first point in time, determining a first position of a pointing device relative to the coordinate space of the camera image field at the first point in time, determining a first position of the pointing device relative to the coordinate space of the media surface at the first point in time based on the first relationship between the coordinate space of the media surface and the coordinate space of the camera image field and based on the first position of the pointing device relative to the coordinate space of the camera image field, and controlling a computer application based on the first position of the pointing device relative to the coordinate space of the media surface.
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