Yan, Jingjing, He, Gengen, Basiri, Anahid and Hancock, Craig
(2018)
Indoor pedestrian dead reckoning calibration by visual tracking and map information.
In: Proceedings of Ubiquitous Positioning, Indoor Navigation and Location-Based Services, 22-23 Mar 2018, Wuhan, China.
Abstract
Currently, Pedestrian Dead Reckoning (PDR) systems are becoming more attractive in market of indoor positioning. This is mainly due to the development of cheap and light Micro Electro-Mechanical Systems (MEMS) on smartphones and less requirement of additional infrastructures in indoor areas. However, it still faces the problem of drift accumulation and needs the support from external positioning systems. Vision-aided inertial navigation, as one possible solution to that problem, has become very popular in indoor localization with satisfied performance than individual PDR system. In the literature however, previous studies use fixed platform and the visual tracking uses feature-extraction-based methods. This paper instead contributes a distributed implementation of positioning system and uses deep learning for visual tracking. Meanwhile, as both inertial navigation and optical system can only provide relative positioning information, this paper contributes a method to integrate digital map with real geographical coordinates to supply absolute location. This hybrid system has been tested on two common operation systems of smartphones as iOS and Android, based on corresponded data collection apps respectively, in order to test the robustness of method. It also uses two different ways for calibration, by time synchronization of positions and heading calibration based on time steps. According to the results, localization information collected from both operation systems has been significantly improved after integrating with visual tracking data.
| Item Type: |
Conference or Workshop Item
(Paper)
|
| Keywords: |
pedestrian dead reckoning; visual tracking; smartphone positioning; sensor fusion |
| Schools/Departments: |
University of Nottingham Ningbo China > Faculty of Science and Engineering > School of Geographical Sciences
University of Nottingham Ningbo China > Faculty of Science and Engineering > Department of Civil Engineering |
| Depositing User: |
QIU, Lulu
|
| Date Deposited: |
22 Nov 2018 15:31 |
| Last Modified: |
16 Jul 2021 01:11 |
| URI: |
https://eprints.nottingham.ac.uk/id/eprint/55566 |
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