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.sub.i,y.sub.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.