System, device, method and computer program product for using a mobile camera for controlling a computer

A mobile camera for controlling a computing apparatus, the camera comprising a processing element 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.

A method of controlling a computing apparatus, the method comprising:

• 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.

A computer program product for using a mobile camera for controlling a computer, the computer program product comprising at least one computer-readable storage medium having computer-readable program code portions stored therein, the computer-readable program code portions comprising:

• a first executable portion 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;
• a second executable portion capable of determining a first position of the pointing device relative to the coordinate space of the camera image field at the first point in time;
• a third executable portion capable of 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
• a fourth executable portion capable of controlling a computer application based on the first position of the pointing device relative to the coordinate space of the media surface.

A processing device for controlling a computer, the device comprising a processing element 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.