Image analysis – Applications – Target tracking or detecting
Reexamination Certificate
2004-11-15
2010-10-05
Mariam, Daniel G (Department: 2624)
Image analysis
Applications
Target tracking or detecting
C351S209000, C345S157000, C382S107000
Reexamination Certificate
active
07809160
ABSTRACT:
Apparatus and method for eye gaze tracking in human or animal subjects without calibration of cameras, specific measurements of eye geometries or the tracking of a cursor image on a screen by the subject through a known trajectory. One embodiment includes one uncalibrated camera for acquiring video images of the subject's eye(s) and optionally having an on-axis illuminator, and a surface, object, or visual scene with embedded off-axis illuminator markers. The off-axis markers are reflected on the corneal surface of the subject's eyes as glints. The glints indicate the distance between the point of gaze in the surface, object, or visual scene and the corresponding marker on the surface, object, or visual scene.
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Cheng Daniel
Macfarlane Victor
Shell Jeffrey S.
Sohn Changuk
Vertegaal Roel
Mariam Daniel G
Miernicki Steeg Carol
Queen's University at Kingston
Schribner Stephen J.
Woldemariam Aklilu k
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