Patent ID: 6973202
Filing Date: 2005-12-06
Classification: A61B,A61N,G01C,G01S,G06T

Abstract:
1. A method for tracking a location and orientation of an object in three-dimensional space, comprising: (a) surveying a plurality of markers on an object; (b) calibrating an imaging device that is used to image the object; (c) obtaining a first set of object position and orientation data; (d) projecting the markers to an image domain to obtain coordinates of projected markers; (e) obtaining an image frame data set using the imaging device, the image frame data set comprising image data for at least three markers from the plurality of markers; (f) analyzing the image frame data set against the projected marker coordinates; (g) adjusting the first set of object position and orientation data if results of (f) are not within acceptable threshold tolerances; and (h) accepting the first set of object position and orientation data for the object if results of (f) are within the acceptable threshold tolerances.