Abstract: A gaze point tracking apparatus is provided having a comparator that receives a video signal corresponding to an eye image or a beacon image. The comparator produces a processed video signal that consists of two signal levels. A video processor detects and measures transitions between the two signal levels. The detected transitions are used to determine the location of a gaze point on a display.
Type:
Grant
Filed:
April 26, 2000
Date of Patent:
August 13, 2002
Assignee:
Eye Control Technologies, Inc.
Inventors:
Jim Richardson, Birch Zimmer, Michael A. Hardwick
Abstract: An eye controllable screen pointer system is provided that combines eye gaze tracking and screen tracking from the point of view of the user. Screen tracking is performed by a screen tracking camera, attached to a helmet the user is wearing. The screen tracking camera is aided by either light emitted from screen beacon located near the screen, or by a light pattern emitted from the screen itself as a screen beacon signal. The screen tracking means provides a screen tracking signal. Eye gaze tracking is performed as is known in the art, or according to a novel way described herein. An eye gaze tracking means is attached to the helmet, and provides an eye tracking signal. The information carried in the screen tracking signal and in the eye tracking signal are combined in a calculation by a processing means residing in a processor to produce a point of computed gaze on the screen.
Abstract: A gaze point tracking apparatus is provided having a comparator that receives a video signal corresponding to an eye image or a beacon image. The comparator produces a processed video signal that consists of two signal levels. A video processor detects and measures transitions between the two signal levels. The detected transitions are used to determine the location of a gaze point on a display.
Type:
Grant
Filed:
June 17, 1998
Date of Patent:
July 18, 2000
Assignee:
Eye Control Technologies, Inc.
Inventors:
Jim Richardson, Birch Zimmer, Michael A. Hardwick