Collaborative pointing devices

Details Collaborative pointing devices Collaborative pointing devices

2007-03-20

2007-03-20

Shalwala, Bipin (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

C345S157000, C345S158000

Reexamination Certificate

active

10445039

ABSTRACT:
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 (xi,yi) 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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