Remote eye-trackers are more comfortable, easier and faster to setup than intrusive ones. Some of... more Remote eye-trackers are more comfortable, easier and faster to setup than intrusive ones. Some of them also allow high data rates and limited head motion. In this study we evaluated the limits of reliability of a commercial remote eye-tracker during head motion, in order to investigate the feasibility of studying gaze during walking. The range of motion of the head and the range of trackability were estimated during selected tasks and the error was computed. Results indicated that the gaze is never lost during walking (1.1 m/s) and its error is lower than 30 mm.
Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference, 2014
Inaccurate visual sampling and foot placement may lead to unsafe walking. Virtual environments, c... more Inaccurate visual sampling and foot placement may lead to unsafe walking. Virtual environments, challenging obstacle negotiation, may be used to investigate the relationship between the point of gaze and stepping accuracy. A measurement of the point of gaze during walking can be obtained using a remote eye-tracker. The assessment of its performance and limits of applicability is essential to define the areas of interest in a virtual environment and to collect information for the analysis of the visual strategy. The current study aims at characterizing a gaze eye-tracker in static and dynamic conditions. Three different conditions were analyzed: a) looking at a single stimulus during selected head movements b) looking at multiple stimuli distributed on the screen from different distances, c) looking at multiple stimuli distributed on the screen while walking. The eye-tracker was able to measure the point of gaze during the head motion along medio-lateral and vertical directions consi...
Remote eye-trackers are more comfortable, easier and faster to setup than intrusive ones. Some of... more Remote eye-trackers are more comfortable, easier and faster to setup than intrusive ones. Some of them also allow high data rates and limited head motion. In this study we evaluated the limits of reliability of a commercial remote eye-tracker during head motion, in order to investigate the feasibility of studying gaze during walking. The range of motion of the head and the range of trackability were estimated during selected tasks and the error was computed. Results indicated that the gaze is never lost during walking (1.1 m/s) and its error is lower than 30 mm.
Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference, 2014
Inaccurate visual sampling and foot placement may lead to unsafe walking. Virtual environments, c... more Inaccurate visual sampling and foot placement may lead to unsafe walking. Virtual environments, challenging obstacle negotiation, may be used to investigate the relationship between the point of gaze and stepping accuracy. A measurement of the point of gaze during walking can be obtained using a remote eye-tracker. The assessment of its performance and limits of applicability is essential to define the areas of interest in a virtual environment and to collect information for the analysis of the visual strategy. The current study aims at characterizing a gaze eye-tracker in static and dynamic conditions. Three different conditions were analyzed: a) looking at a single stimulus during selected head movements b) looking at multiple stimuli distributed on the screen from different distances, c) looking at multiple stimuli distributed on the screen while walking. The eye-tracker was able to measure the point of gaze during the head motion along medio-lateral and vertical directions consi...
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