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          Institute: MPI für biologische Kybernetik     Collection: Biologische Kybernetik     Display Documents

ID: 420016.0, MPI für biologische Kybernetik / Biologische Kybernetik
LibGaze: Real-time gaze-tracking of freely moving observers for wall-sized displays
Authors:Herholz, S.; Chuang, L.L.; Tanner, T.G.; Bülthoff, H.H.; Fleming, R.W.
Editors:Deussen, O.; Keim, D.
Date of Publication (YYYY-MM-DD):2008-10
Title of Proceedings:Vision, Modeling and Visualization 2008: Proceedings (VMV 2008)
Start Page:101
End Page:110
Physical Description:10
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:We present a mobile system for tracking the gaze of
an observer in real-time as they move around freely
and interact with a wall-sized display. The system
combines a head-mounted eye tracker with a mo-
tion capture system for tracking markers attached
to the eye tracker. Our open-source software library
libGaze provides routines for calibrating the sys-
tem and computing the viewer’s position and gaze
direction in real-time. The modular architecture of
our system supports simple replacement of each of
the main components with alternative technology.
We use the system to perform a psychophysical
user-study, designed to measure how users visually
explore large displays. We find that observers use
head move- ments during gaze shifts, even when
these are well within the range that can be com-
fortably reached by eye movements alone. This
suggests that free movement is important in nor-
mal gaze behaviour,motivating further applications
in which the tracked user is free to move.
External Publication Status:published
Document Type:Conference-Paper
Communicated by:Holger Fischer
Affiliations:MPI f�r biologische Kybernetik/Psychophysics (Dept. B�lthoff)
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