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Task-Oriented Evaluation of Indoor Positioning Systems
[chapter]
2017
Lecture Notes in Geoinformation and Cartography
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the correct segment of an indoor route, which in turn enables the navigation system to give correct instructions. ...
In this paper, we present a task-oriented evaluation that adapts the idea of landmark navigation: Instead of specifying the error metrically, system performance is measured by the ability to determine ...
For an implementation of this idea, we rely on graphs to formally represent a map of the environment and define and locate relevant objects. ...
doi:10.1007/978-3-319-71470-7_2
fatcat:2xiznqhp5vaudfi5evmlkuhmuq
A Multi-User Personal Indoor Localization System Employing Graph-Based Optimization
2019
Sensors
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These experiments demonstrate that graph-based optimization can be used as an efficient fusion mechanism to obtain accurate trajectory estimates both in the case of a single user and in a multi-user indoor ...
Personal indoor localization with smartphones is a well-researched area, with a number of approaches solving the problem separately for individual users. ...
Therefore, despite the obvious decrease in the estimation error, joint optimization of sequences shows a preference for more commonly used routes and might decrease the accuracy in the case of routes taken ...
doi:10.3390/s19010157
fatcat:bhcshipudrdztlc3wj7d6j4wtu
Semantically enriched navigation for indoor environments
2006
International Journal of Web and Grid Services
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Existing approaches for indoor navigation are driven by geometric information and neglect important aspects, such as the semantics of space and user capabilities and context. ...
Location-based mobile services have been in use, and studied, for a long time. ...
Hence, a key feature of UNO lies in the formal definition (through restrictions, and necessary and sufficient conditions) of user classes. ...
doi:10.1504/ijwgs.2006.011714
fatcat:6hafayzedjg6rfxbxsngwlupky
A REVIEW OF RECENT RESEARCH IN INDOOR MODELLING & MAPPING
2016
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Information Acquisition by Sensors, Model Definition, Model Integration, Indoor Positioning and LBS, Routing & Navigation Methods, Augmented and Virtual Reality Applications, and Ethical Issues. ...
This paper summarizes the outputs of last 10 years of research on indoor modeling and mapping within a proper classification which covers 7 areas, i.e. ...
Weighted indoor routing graph which can generate different routes for disabled or elderly people was proposed for user adaptive routing. ...
doi:10.5194/isprs-archives-xli-b4-289-2016
fatcat:qn2bzwgzd5a5xe6jzeqsuqddoe
A New Wireless Communication Paradigm through Software-controlled Metasurfaces
[article]
2018
arXiv
pre-print
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Multiple tiles are employed to coat objects such as walls, furniture, overall, any objects in the indoor and outdoor environments. ...
An external software service calculates and deploys the optimal interaction types per tile, to best fit the needs of communicating devices. ...
Fig. 6 . 6 , the indoor space shows a dimension of 15 m in length and 10 m in width and a height of 3 m. ...
arXiv:1806.01792v1
fatcat:x2usajo7yre3ngw3w3sktvphei
Indoor navigation on wheels (and on foot) using smartphones
2012
2012 International Conference on Indoor Positioning and Indoor Navigation (IPIN)
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While previously we only guided the user along a single path, we now extend this for the case when a user departs from the initial route, either voluntarily or because she is lost. ...
Combining these approaches, we show the potential of smartphone-based indoor navigation, resulting in an average error (ALE) of less than 3 m, independent of the length of the overall path and without ...
For this, we first have to normalize the edges of our navigation graph. To this purpose, we split all edges of the original graph into a number of virtual steps, based on the step length of the user. ...
doi:10.1109/ipin.2012.6418931
dblp:conf/ipin/LinkGSW12
fatcat:gokb7tdmb5fizhet5cotkpzapu
On the Right Track: Comfort and Confusion in Indoor Environments
2020
ISPRS International Journal of Geo-Information
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Indoor navigation systems are not well adapted to the needs of their users. ...
Implementing the results in a route planning algorithm could be a valuable improvement of indoor navigation support. ...
Acknowledgments: This research has benefitted from a statistical consult with Ghent University FIRE (Fostering Innovative Research based on Evidence). ...
doi:10.3390/ijgi9020132
fatcat:hjgxt23nqvcazandrkvnwpcnyu
Indoor Routing on Logical Network Using Space Semantics
2019
ISPRS International Journal of Geo-Information
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We provide a proof-of-concept implementation for several buildings to demonstrate the usability of such a routing. ...
Here, we present a routing mechanism that is based on a dedicated space classification and a set of routing criteria. ...
We believe this approach opens the door for a new type of routing that can be better adapted to the cognition needs of human users. ...
doi:10.3390/ijgi8030126
fatcat:g6kfkvxejjd6rluetaqxykccby
Using Crowdsourced Geodata for Agent-Based Indoor Evacuation Simulations
2012
ISPRS International Journal of Geo-Information
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The here presented research now tries to utilize crowdsourced indoor geodata for more complex indoor routing scenarios of multiple users. ...
Crowdsourced geodata has been proven to be a rich and major data source for environmental simulations and analysis, as well as the visualization of spatial phenomena. ...
Additionally we would like to thank Gregor Lä mmel for his support and help towards understanding the MATSim framework specification and its individual components. ...
doi:10.3390/ijgi1020186
fatcat:tpxlxqh7kvhghhqkrjijy3y3za
A Review on Path Selection and Navigation Approaches Towards an Assisted Mobility of Visually Impaired People
2020
KSII Transactions on Internet and Information Systems
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It is observed that the solution to problem is complex and computationally intensive and significant effort is required towards the development of richer and comfortable paths for safe and smooth navigation ...
In the process, we explore machine learning approaches for robotic path planning, multi constrained optimal path computation and sensor based wearable assistive devices for the visually impaired. ...
Below we present a formal definition for path selection problem so that we can learn about existing works more accurately. ...
doi:10.3837/tiis.2020.08.007
fatcat:k3r6ceqxcbg7xkllthpox3ix3a
3-D Data Models
[chapter]
2017
Encyclopedia of GIS
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Acknowledgements This study was supported by TUBITAK-The Scientific and Technological Research Council of Turkey research grant [grant number: 112Y050]. ...
We are indebted for its financial support.
4-Intersection Calculus ...
Most of the GIS researchers use graph networks for indoor routing and evacuation analysis (Karas et al. 2006; Jun et al. 2009 ). ...
doi:10.1007/978-3-319-17885-1_100004
fatcat:6o75kluwh5dknle7cvmgmnsnja
3D Models
[chapter]
2017
Encyclopedia of GIS
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Acknowledgements This study was supported by TUBITAK-The Scientific and Technological Research Council of Turkey research grant [grant number: 112Y050]. ...
We are indebted for its financial support.
4-Intersection Calculus ...
Most of the GIS researchers use graph networks for indoor routing and evacuation analysis (Karas et al. 2006; Jun et al. 2009 ). ...
doi:10.1007/978-3-319-17885-1_100007
fatcat:n7jatghxh5filenbpkconn44hu
Analytic Prioritization of Indoor Routes for Search and Rescue Operations in Hazardous Environments
2017
Computer-Aided Civil and Infrastructure Engineering
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These types of applications often failed to account for the complexity and trade-offs needed to select the optimal indoor path during an emergency situation. ...
Applications to prioritize indoor routes for emergency situations in a complex built facility have been restricted to building simulations and network approaches. ...
State of the art in SAR and indoor environments The typical research in emergency response is devoted to evacuation and rescue, with a focus on indoor navigation and route finding. ...
doi:10.1111/mice.12260
fatcat:arsrbvzymva47iglioewfa57ta
Towards Crowd-aware Indoor Path Planning (Extended Version)
[article]
2021
arXiv
pre-print
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Second, a time-evolving population estimator derives room populations for a future timestamp to support crowd-aware routing cost computations in query processing. ...
All algorithms are based on graph traversal over the indoor crowd model and use the same search framework with different strategies of updating the populations during the search process. ...
ACKNOWLEDGMENTS This work is an extension of the paper entitled "Towards Crowdaware Indoor Path Planning" published at VLDB 2021. ...
arXiv:2104.05480v2
fatcat:atjhpl2rpner5j2utmxolc7yee
Infrastructure-Independent Indoor Localization and Navigation
2019
ACM Computing Surveys
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In the absence of any global positioning infrastructure for indoor environments, research on supporting human indoor localization and navigation trails decades behind research on outdoor localization and ...
Combined with the fragmentation and compartmentalization of indoor environments this poses significant challenges to widespread adoption of indoor location-based services. ...
The step length varies across users of di erent height, weight, and gender. Even for the same user, the step length varies with speed, environment, and health condition. ...
doi:10.1145/3321516
fatcat:auul7adfangupdzkur7i224ggu
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