Braun, AndreasAndreasBraunDutz, TimTimDutzAlekseew, MichaelMichaelAlekseewSchillinger, PhilippPhilippSchillingerMarinc, AlexanderAlexanderMarinc2022-03-122022-03-122013https://publica.fraunhofer.de/handle/publica/38116310.1007/978-3-642-39351-8_38In recent years, various indoor tracking and localization approaches for usage in conjunction with Pervasive Computing systems have been proposed. In a nutshell, three categories of localization methods can be identified, namely active marker-based solutions, passive marker-based solutions, and marker-free solutions. Both active and passive marker-based solutions require a person to carry some type of tagging item in order to function, which, for a multitude of reasons, makes them less favorable than marker-free solutions, which are capable of localizing persons without additional accessories. In this work, we present a marker-free, camera-based approach for use in typical indoor environments that has been designed for reliability and cost-effectiveness. We were able to successfully evaluate the system with two persons and initial tests promise the potential to increase the number of users that can be simultaneously tracked even further.encomputer visionindoor localization systemsubiquitous computing006conference paper