Pupil Geometry
Friday, October 22nd, 2010
I’ve been trying to reduce the number of free variables in the mapping between the position of the pupil in a eye-camera image and the point of gaze on a screen, given the head location of a person. Previously I was just fitting an ellipse to the pupil and using the location of its centre. This method did not use all of the information I’d just obtained about the ellipse. In this post I explore one theoretical method of using the ellipse parameters.
