GRADIENT REFLECTOR LOCATION SENSING SYSTEM

摘要

A multi-band high-speed videometric head tracking system (10) having a gradi ent reflector array (12) attached to a helmet (13) on a person's head, ultraviolet light source (14) emitting light which is reflect ed by the reflector array to a video camera (11) which p rovides an image to a spot location estimator (29) providing accurate locations of s pots in the image representing the reflectors' reflectin g light to image location accuracies within a pixel of the image. The location informat ion from the spot location estimator goes to a track poi nt 3-D location and helmet LOS estimator (33) that provides location and orientatio n information to a Kalmam Filter (15) that accurately es timates and predicts the helmet position at faster rates than would be possible for a process that uses just the image-based measurements of the helmet.