Collaborative pointing devices

Details Collaborative pointing devices Collaborative pointing devices

G - Physics

06

F

G06F 3/033 (2006.01) G06F 3/042 (2006.01) G06F 3/14 (2006.01)

Patent

CA 2429880

A method and system for determining a position of laser spots in an initial image due to a plurality of laser pointer, the method having the steps of acquiring a sequence of images from a camera directed at the initial image to produce acquired images thereof, each said acquired image comprising image elements forming a frame; assigning each of said laser pointers a unique transmission pattern; registering said code of each of said laser pointers during frame i with a processor; determining said laser spots in said frame i; registering the appearance of the laser spots of each of the laser pointers during frame i with a processor; assigning positional coordinates to each said located laser spots so as to produce a sequence of positional coordinates (x i,y i) corresponding to sequential positions of the laser spot in the initial image; whereby said laser spots appear in the captured images in a pattern corresponding to said unique transmission pattern and each of said laser pointers is uniquely identifiable and tracked.

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