WIT Press

Bidimensional Eye Position Measurement Using Video-oculographic Systems: Close Form Solution And Error Analysis

Price

Free (open access)

Paper DOI

10.2495/BIO950561

Volume

2

Pages

12

Published

1995

Size

1,192 kb

Author(s)

F. Fioravanti, P. Bruno & P. Inchingolo

Abstract

Bidimensional eye position measurement using video-oculographic systems: close form solution and error analysis F. Fioravanti, P. Bruno, P. Inchingolo Unita di Bioingegneria, Dipartimento di Elettrotecnica, Elettronica ed Informatica, University of Trieste, Trieste, Italy ABSTRACT In recent years, the Video-Oculographic technique (VOG) has been increasingly adopted for the measurement of eye movements. For most of the existing VOG systems, the rotation angles of the eye are evaluated by detecting the position of the centre of the pupil image: this technique, however, assumes orthogonal projection for the optical system and needs an estimation of the diameter of the pupil and of the radius of the globe, which is normally performed using subjective calibration sessions, where the patient must fixate a set of known position targets. Such procedure is not suitable for recordings on strabismic subjects or on children, and does not allow an accurate evaluation of the precision of

Keywords