Travi-Navi: Self-Deployable Indoor Navigation System

Zheng, Yuanqing; Shen, Guobin; Li, Liqun; Zhao, Chunlei; Li, Zhenjiang; Zhao, Feng

doi:10.1109/tnet.2017.2707101

Cited by 103 publications

(90 citation statements)

References 37 publications

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“…Travi-Navi [52] is another sophisticated vision-guided navigation system that enables a self-motivated user to easily bootstrap and deploy indoor navigation services on his/her smartphone, without comprehensive indoor localization systems or even the availability of floor maps. Travi-Navi records high-quality images during the course of a guider's walk on the navigation paths, collects a rich set of sensor readings, and packs them into a navigation trace.…”

Section: D Space Sensing and Augmented Reality Systemsmentioning

confidence: 99%

Blind MuseumTourer: A System for Self-Guided Tours in Museums and Blind Indoor Navigation

Μηλιώνης

Sampson

2018

Technologies

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Notably valuable efforts have focused on helping people with special needs. In this work, we build upon the experience from the BlindHelper smartphone outdoor pedestrian navigation app and present Blind MuseumTourer, a system for indoor interactive autonomous navigation for blind and visually impaired persons and groups (e.g., pupils), which has primarily addressed blind or visually impaired (BVI) accessibility and self-guided tours in museums. A pilot prototype has been developed and is currently under evaluation at the Tactual Museum with the collaboration of the Lighthouse for the Blind of Greece. This paper describes the functionality of the application and evaluates candidate indoor location determination technologies, such as wireless local area network (WLAN) and surface-mounted assistive tactile route indications combined with Bluetooth low energy (BLE) beacons and inertial dead-reckoning functionality, to come up with a reliable and highly accurate indoor positioning system adopting the latter solution. The developed concepts, including map matching, a key concept for indoor navigation, apply in a similar way to other indoor guidance use cases involving complex indoor places, such as in hospitals, shopping malls, airports, train stations, public and municipality buildings, office buildings, university buildings, hotel resorts, passenger ships, etc. The presented Android application is effectively a Blind IndoorGuide system for accurate and reliable blind indoor navigation.

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Section: D Space Sensing and Augmented Reality Systemsmentioning

confidence: 99%

Blind MuseumTourer: A System for Self-Guided Tours in Museums and Blind Indoor Navigation

Μηλιώνης

Sampson

2018

Technologies

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“…C a l c u l a t eR T F ( ( , ), ) according to (1). (8) Calculate RTF-IFF( ( , ), ) according to (3).…”

Section: Definition 2 (Rss Term Frequency) One Defines Rss Termmentioning

confidence: 99%

BigLoc: A Two-Stage Positioning Method for Large Indoor Space

Zheng

Chen

et al. 2016

International Journal of Distributed Sensor Networks

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With the rapid development of WLAN infrastructure, fingerprint-based positioning using signal strength has become a promising localization solution in indoor space. Commonly fingerprint-based positioning methods face two challenges in large indoor space, one is floor recognition in large building with multifloor, and the other is signal strength variance due to heterogeneous devices and environmental factors. In this paper, we propose a novel two-stage positioning approach to address these challenges of fingerprintbased positioning methods in large indoor space. Firstly, we design a floor-level recognition feature based on WiFi access points and the RSS values to recognize floor. For solving the signal strength variance problem, we propose a new metric to capture the similarity of location fingerprints probability distribution using KL Divergence. To demonstrate the utility of our approach, we have performed comprehensive experiments in a large indoor building.

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“…We have used an increasing number of training samples, from 20.000 to 160.000. We evaluated three alternative models: (a) uses the initial equation proposed in Equation (5); (b) when a user had more than 10 training samples, we use Equation (5), in other cases, we use Equation (6), where p(u|l) is removed; (c) uses Equation (7), with variables h and d jointly estimated; (d) uses Equation (8) that assumes TM is symmetric ((b) considerations are also used). …”

Section: Evaluation Of the Location Estimationmentioning

confidence: 99%

“…[5]. Some of them need a connection to another big system-like a cloud-to send the information, and this outsider system calculates the location of the end device [6]. Others estimate their position by multilateration using their neighbors [7].…”

Section: Introductionmentioning

confidence: 99%

Stochastic Cooperative Decision Approach for Studying the Symmetric Behavior of People in Wireless Indoor Location Systems

et al. 2016

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Nowadays, several wireless location systems have been developed in the research world. The goal of these systems has always been to find the greatest accuracy as possible. However, if every node takes data from the environment, we can gather a lot of information, which may help us understand what is happening around our network in a cooperative way. In order to develop this cooperative location and tracking system, we have implemented a sensor network to capture data from user devices. From this captured data we have observed a symmetry behavior in people's movements at a specific site. By using these data and the symmetry feature, we have developed a statistical cooperative approach to predict the new user's location. The system has been tested in a real environment, evaluating the next location predicted by the system and comparing it with the next location in the real track, thus getting satisfactory results. Better results have been obtained when the stochastic cooperative approach uses the transition matrix with symmetry.

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Travi-Navi: Self-Deployable Indoor Navigation System

Cited by 103 publications

References 37 publications

Blind MuseumTourer: A System for Self-Guided Tours in Museums and Blind Indoor Navigation

Blind MuseumTourer: A System for Self-Guided Tours in Museums and Blind Indoor Navigation

BigLoc: A Two-Stage Positioning Method for Large Indoor Space

Stochastic Cooperative Decision Approach for Studying the Symmetric Behavior of People in Wireless Indoor Location Systems

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