title: Eye pupil diameter measurement and assessment via a novel pupilometer system.
abstract: The latest progress in the area of psychophysiology and psychopathology has urged the need for new tools, being able to perform special, non-invasive measurements. By measuring the eye pupil diameter and its variations, new and interesting conclusions can be reached, concerning the effect of specific drugs on humans or the process of reaction to certain stimuli with psychophysiological significance.We present the design, the development, the integration and the evaluation of a new system for the measurement of the eye pupil diameter and its variations as a function of time. The main advantages are a low cost system based on a personal computer and the introduction of some new algorithmic techniques on manipulating eye images.
authors.affiliation: National Technical University of Athens, Department of Electrical and Computer Engineering, Biomedical Engineering Laboratory, GR 10682 Athens, Greece.
authors.forename: A
authors.initials: A
authors.lastname: Tsalpatouros
authors.affiliation: National Technical University of Athens, Department of Electrical and Computer Engineering, Biomedical Engineering Laboratory, GR 10682 Athens, Greece.
authors.forename: O
authors.initials: O
authors.lastname: Panou-Diamandi
authors.affiliation: University Psychiatric Clinic of Athens, Psychophysiology Laboratory, Eginition Hospital, Athens, Greece.
authors.forename: C
authors.initials: C
authors.lastname: Papageorgiou
authors.affiliation: University Psychiatric Clinic of Athens, Psychophysiology Laboratory, Eginition Hospital, Athens, Greece.
authors.forename: A
authors.initials: A
authors.lastname: Rambavillas
authors.affiliation: University Psychiatric Clinic of Athens, Psychophysiology Laboratory, Eginition Hospital, Athens, Greece.
authors.forename: C
authors.initials: C
authors.lastname: Stefanis
authors.affiliation: National Technical University of Athens, Department of Electrical and Computer Engineering, Biomedical Engineering Laboratory, GR 10682 Athens, Greece.
authors.forename: N
authors.initials: N
authors.lastname: Uzunoglu
authors.affiliation: National Technical University of Athens, Department of Electrical and Computer Engineering, Biomedical Engineering Laboratory, GR 10682 Athens, Greece.
authors.forename: D
authors.initials: D
authors.lastname: Koutsouris