Patent ID: 6787750
Filing Date: 2004-09-07
Classification: G06T

Abstract:
A method for optical tracking in a video sequence, said method comprising the steps of:placing a plurality of optical markers in a three-dimensional space; storing location data for said plurality of optical markers in said three-dimensional space; viewing said three dimensional space with a camera in a given pose for forming a camera image thereof; identifying an image of one of said optical markers in said camera image, hereinafter referred to as a beacon marker; storing location information of said beacon marker; utilizing said location data, said location information, and predefined search criteria in said camera image for locating images of others of plurality of optical markers; storing respective location information for said images of said others of plurality of optical markers; and utilizing said location data, said location information, and said respective location information for said images of said others of plurality of optical markers to derive positional information for determining said given pose of said camera.