1. German Research Center for Artificial Intelligence, Department Augmented Vision, Kaiserslautern, Germany. {daniel.steffen,markus.weber,didier.stricker}@dfki.de
2. Swedish Defence Research Agency (FOI), Department Sensor Informatics, Linköping, Sweden. gustaf.hendeby@foi.se
3. Linköping University, Department of Electrical Engineering, Linköping, Sweden. hendeby@isy.liu.se
4. Université de Technologie de Compiègne, UMR CNRS 7338 Biomécanique et Bioingénérie, Compiègne, France. {laetitia.fradet,frederic.marin}@utc.fr
5. CIC-IT Inserm 804, Rennes, France. {nathalie.ville,francois.carre}@univ-rennes2.fr