An Optimal Algorithm for Euclidean Shortest Paths in the Plane
SIAM Journal on Computing
A hybrid indoor navigation system
Proceedings of the 6th international conference on Intelligent user interfaces
A resource-adaptive mobile navigation system
Proceedings of the 7th international conference on Intelligent user interfaces
The Location Stack: A Layered Model for Location in Ubiquitous Computing
WMCSA '02 Proceedings of the Fourth IEEE Workshop on Mobile Computing Systems and Applications
Pedestrian navigation aids: information requirements and design implications
Personal and Ubiquitous Computing
On location models for ubiquitous computing
Personal and Ubiquitous Computing
MiddleWhere: a middleware for location awareness in ubiquitous computing applications
Proceedings of the 5th ACM/IFIP/USENIX international conference on Middleware
Augmented reality navigation systems
Universal Access in the Information Society
Mobility Impaired Pedestrians Are Not Cars: Requirements for the Annotation of Geographical Data
ICCHP '08 Proceedings of the 11th international conference on Computers Helping People with Special Needs
Navitime: Supporting Pedestrian Navigation in the Real World
IEEE Pervasive Computing
uNavi: Implementation and Deployment of a Place-Based Pedestrian Navigation System
COMPSAC '08 Proceedings of the 2008 32nd Annual IEEE International Computer Software and Applications Conference
Landmark-Based Pedestrian Navigation with Enhanced Spatial Reasoning
Pervasive '09 Proceedings of the 7th International Conference on Pervasive Computing
Indoor Navigation on Distributed Stationary Display Systems
COMPSAC '09 Proceedings of the 2009 33rd Annual IEEE International Computer Software and Applications Conference - Volume 01
LOC8: A Location Model and Extensible Framework for Programming with Location
IEEE Pervasive Computing
Minimising pedestrian navigational ambiguities through geoannotation and temporal tagging
HCI'07 Proceedings of the 12th international conference on Human-computer interaction: interaction platforms and techniques
A unified semantics space model
LoCA'07 Proceedings of the 3rd international conference on Location-and context-awareness
Towards a semantic spatial model for pedestrian indoor navigation
ER'07 Proceedings of the 2007 conference on Advances in conceptual modeling: foundations and applications
PerPos: a platform providing cloud services for pervasive positioning
Proceedings of the 1st International Conference and Exhibition on Computing for Geospatial Research & Application
PerPos: a translucent positioning middleware supporting adaptation of internal positioning processes
Proceedings of the ACM/IFIP/USENIX 11th International Conference on Middleware
Indoor positioning using GPS revisited
Pervasive'10 Proceedings of the 8th international conference on Pervasive Computing
Pervasive'10 Proceedings of the 8th international conference on Pervasive Computing
TraX: a device-centric middleware framework for location-based services
IEEE Communications Magazine
Proceedings of International Conference on Advances in Mobile Computing & Multimedia
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This paper introduces methods and services called PerPosNav for development of custom indoor pedestrian navigation applications to be deployed on a variety of platforms. PerPosNav is built on top of the PerPos positioning middleware [8] that fusions GPS, WiFi and inertial tracking into indoor positioning with high accuracy in many types of buildings. The challenges of indoor navigation are discussed and the PerPosNav services are introduced. PerPosNav combines symbolic and geometry based modeling of buildings, and in turn combines graph-based and geometric route computation. The paper argues why these hybrid approaches are necessary to handle the challenges of indoor pedestrian navigation. Furthermore, a fluent navigation is maintained via route tracking and navigation services that generate instructions based on how the user moves in relation to the prescribed route. The viability of PerPosNav has been proven by implementation of support for multiple modes of pedestrian indoor navigation: 1) augmented signs, 2) map based navigation on smartphones, 3) auditory navigation on smartphones solely via earbuds, and 4) augmented reality navigation. Experiences from the use of the PerPosNav services are discussed and compared to other indoor pedestrian navigation approaches.