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dc.contributor.advisorYun, Xiaoping
dc.contributor.authorYang, Chuan Hao
dc.dateMar-14
dc.date.accessioned2014-05-23T15:19:45Z
dc.date.available2014-05-23T15:19:45Z
dc.date.issued2014-03
dc.identifier.urihttp://hdl.handle.net/10945/41459
dc.descriptionApproved for public release; distribution is unlimited.en_US
dc.description.abstractThis dissertation describes the development of an integrated locomotion interface for building self-contained, portable, and immersive virtual environment (VE) systems. Such VE systems do not rely on any infrastructure support and can be used in indoor/outdoor open spaces. The natural walking motions of the user are utilized as a means of signal generation to drive the locomotion interface, which provides the user with a higher sense of presence. This work investigates the use of two types of measurement systems, the inertial/magnetic measurement units and the ranging measurement systems, to develop a locomotion interface for portable VE systems. Algorithms were developed for each of the two systems to provide the necessary functionalities of the desired locomotion interface. Fusing measurements from a head-mounted and a foot-mounted inertial/magnetic sensor, a locomotion interface was developed for allowing the use of natural walking motions to navigate through virtual environments. To prevent collisions with physical environment boundaries such as walls, a ranging measurement system was used to detect the presence of obstacles. An improved Iterative Closest Point (ICP) algorithm was developed for map-building of the physical environment and for estimating the user's orientation and position within the map. A redirected-walking mechanism was utilized for redirecting the user's walking direction away from boundaries in the physical environment. The two types of measurement systems were integrated to constitute a novel locomotion interface for portable VE systems, and its effectiveness was experimentally tested and demonstrated.en_US
dc.description.urihttp://archive.org/details/developmentofloc1094541459
dc.publisherMonterey, California: Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, may not be copyrighted.en_US
dc.titleDevelopment of a locomotion interface for portable virtual environment systems using an inertial/magnetic sensor-based system and a ranging measurement systemen_US
dc.typeThesisen_US
dc.contributor.departmentComputer Science
dc.subject.authorlocomotion interfaceen_US
dc.subject.authorvirtual environmenten_US
dc.subject.authorinertial/magnetic measurement uniten_US
dc.subject.authorranging measurement systemen_US
dc.subject.authormap-buildingen_US
dc.subject.authorlocalizationen_US
dc.subject.authorredirected walkingen_US
dc.subject.authoriterative closest point.en_US
dc.description.serviceMajor, Taiwan Armyen_US
etd.thesisdegree.nameDoctor Of Philosophy In Modeling, Virtual Environments, And Simulation (MOVES)en_US
etd.thesisdegree.levelDoctoralen_US
etd.thesisdegree.disciplineModeling, Virtual Environments, And Simulation (MOVES)en_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US


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