References of "Langohr, Thomas"
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See detailThe ULg Multimodality Drowsiness Database (called DROZY) and examples of use
Massoz, Quentin ULg; Langohr, Thomas ULg; François, Clémentine ULg et al

in Proceedings of the 2016 IEEE Winter Conference on Applications of Computer Vision (WACV) (2016)

Drowsiness is a major cause of accidents, in particular in road transportation. It is thus crucial to develop robust drowsiness monitoring systems. There is a widespread agreement that the best way to ... [more ▼]

Drowsiness is a major cause of accidents, in particular in road transportation. It is thus crucial to develop robust drowsiness monitoring systems. There is a widespread agreement that the best way to monitor drowsiness is by closely monitoring symptoms of drowsiness that are directly linked to the physiology of an operator such as a driver. The best systems are completely transparent to the operator until the moment he/she must react. In transportation, cameras placed in the passenger compartment and looking at least at the face of the driver are most likely the best way to sense physiology related symptoms such as facial expressions and the fine behavior of the eyeballs and eyelids. We present here the new database (available on http://www.drozy.ulg.ac.be) called DROZY that provides multiple modalities of data to tackle the design of drowsiness monitoring systems and related experiments. We also present two novel systems developed using this database that can make predictions about the speed of reaction of an operator by using near-infrared intensity and range images of his/her face. [less ▲]

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See detailTests of a new drowsiness characterization and monitoring system based on ocular parameters
François, Clémentine ULg; Hoyoux, Thomas ULg; Langohr, Thomas ULg et al

in International Journal of Environmental Research and Public Health (2016)

Detailed reference viewed: 29 (14 ULg)
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See detailHow novice and expert drivers adjust their driving behavior when they feel drowsy?
Berastegui, Pierre ULg; Piette, Christine; François, Clémentine ULg et al

Poster (2015, July 29)

This paper aims to explore adaptive behaviors developed by drivers to prevent drowsiness. Specifically, we postulate that driving expertise is associated with better drowsiness awareness, allowing experts ... [more ▼]

This paper aims to explore adaptive behaviors developed by drivers to prevent drowsiness. Specifically, we postulate that driving expertise is associated with better drowsiness awareness, allowing experts to adequately adjust their driving behaviors when they feel drowsy. The present study was carried on a high-fidelity driving simulator coupled with an innovative system allowing objective sleepiness assessment based on EEG and Eye-tracking data. The Karolinska Sleepiness Scale was used to evaluate subjective drowsiness. The ratio between objective and subjective assessments gave an indicator of drowsiness awareness. Standard Deviation of Lateral Position (SDLP) was used as a measure of performance while driving speed and ocular fixations were recorded in order to highlight adaptive behaviors. 16 subjects were recruited from general population and categorized in two groups of expertise based on the Belgian Institute for Road Safety’s criteria. Our results show that expert drivers show better drowsiness awareness than novices and mobilize speed increasing and vigilance reallocation strategies to maintain satisfactory level of drowsiness. [less ▲]

Detailed reference viewed: 70 (23 ULg)
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See detailThe OUFTI-1 nanosatellite system in mid-2012: architectures of ground and space segments
Denis, Amandine ULg; Pisane, Jonathan ULg; Crosset, Nicolas ULg et al

Conference (2012, September)

We describe the current status of the OUFTI-1 nanosatellite project, the main payload of which is an innovative D- STAR radiocommunication system. We describe the architectures of the ground and space ... [more ▼]

We describe the current status of the OUFTI-1 nanosatellite project, the main payload of which is an innovative D- STAR radiocommunication system. We describe the architectures of the ground and space segments. [less ▲]

Detailed reference viewed: 61 (21 ULg)