Spatial motion recognition system and method using a virtual...

Image analysis – Pattern recognition – Unconstrained handwriting

Reexamination Certificate

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C382S122000, C382S185000

Reexamination Certificate

active

07580572

ABSTRACT:
A spatial motion recognition system capable of recognizing motions in three-dimensional space as handwritings on a two-dimensional plane is provided. The system recognizes motions of a system body occurring in space based on position change information of the system body that is detected in a motion detection unit, displays the recognized motion information on a screen, or transmits to an external device the recognized motion information through a transmission/reception unit or a control signal corresponding to the motion information. A control unit produces a virtual handwriting plane having the shortest distances with respect to respective positions in predetermined time intervals based on three-dimensional track information obtained through tracking, and projects the respective positions in the predetermined time intervals onto the virtual handwriting plane to recover the motions in space.

REFERENCES:
patent: 4862152 (1989-08-01), Milner
patent: 5499306 (1996-03-01), Sasaki et al.
patent: 2003/0001818 (2003-01-01), Katagiri et al.
patent: 2001-356875 (2001-12-01), None
patent: WO 95/21436 (1995-08-01), None
patent: WO 2004/029866 (2004-04-01), None
patent: WO 2004/059569 (2004-07-01), None

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