Uncertainty handling in navigation services using rough and fuzzy set theory

Computational Science and Its Applications – ICCSA 2014

Amirian

Winstanley

2014

Self Cite

Abstract. Navigation services, such as car navigation services, are widely used nowadays. However current car navigation systems are not fully suitable for the navigational needs of tourists. In contrast with drivers, tourists are not constrained by road networks and can walk in places where vehicles are not allowed to move. As current turn-by-turn navigational instructions to be given to vehicle's derivers are mostly based on street network-based algorithms, this way of navigating is not fully suitable for tourists as they do not only move on streets. In addition, Tourists want to see important feature of the area, no matter they take longer path rather than shortest. They want to get navigated through the most touristic path. In order to provide such tourist-specific navigation services, a landmark-based solution was considered. it calculates a route passing more landmarks. This may help user to visit attractive part of a place. It is possible to provide users with the navigational instructions landmark-by-landmark rather than turn-by-turn. In this application, a graph database is used because of having highly connected data and also need to remove the mapping layer between physical storage layer and application logic layer to have more availability and responsiveness.

Section: Landmark-based Pedestrian Navigationmentioning

confidence: 99%

Use of Graph Databases in Tourist Navigation Application

Computational Science and Its Applications – ICCSA 2014

Amirian

Winstanley

2014

Self Cite

“…INS, Camera-based, passive and Bluetooth positioning need infrastructure development which might not be available in all places and also in some cases are not cheap. It seems that mobile network position such as TDOA is one of the best alternatives [38].…”

Section: B Fitness-to-purpose Analysismentioning

confidence: 99%

Overview of positioning technologies from fitness-to-purpose point of view

International Conference on Localization and GNSS 2014 (ICL-GNSS 2014)

Lohan

Silva

et al. 2014

Self Cite

Abstract-Even though Location Based Services (LBSs) are being more and more widely-used and this shows a promising future, there are still many challenges to deal with, such as privacy, reliability, accuracy, cost of service, power consumption and availability. There is still no single low-cost positioning technology which provides position of its users seamlessly indoors and outdoors with an acceptable level of accuracy and low power consumption. For this reason, fitness of positioning service to the purpose of LBS application is an important parameter to be considered when choosing the most suitable positioning technology for an LBS. This should be done for any LBS application, since each application may need different requirements. Some location-based applications, such as locationbased advertisements or Location-Based Social Networking (LBSN), do not need very accurate positioning input data, while for some others, e.g. navigation and tracking services, highlyaccurate positioning is essential. This paper evaluates different positioning technologies from fitness-to-purpose point of view for two different applications, public transport information and family/friend tracking.

“…Pedestrians can easily go into buildings as well as streets so an ideal navigation system should work seamlessly in and out of doors. Seamless indoor and outdoor navigation is one of the most important features which should be handled in a pedestrian navigation application and is still a topic of many research projects [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

The Use of Quick Response (QR) Codes in Landmark-Based Pedestrian Navigation

International Journal of Navigation and Observation

Amirian

Winstanley

2014

Self Cite

Vehicle navigation systems usually simply function by calculating the shortest fastest route over a road network. In contrast, pedestrian navigation can have more diverse concerns. Pedestrians are not constrained to road/path networks; their route may involve going into buildings (where accurate satellite locational signals are not available) and they have different priorities, for example, preferring routes that are quieter or more sheltered from the weather. In addition, there are differences in how people are best directed: pedestrians noticing landmarks such as buildings, doors, and steps rather than junctions and sign posts. Landmarks exist both indoors and outdoors. A system has been developed that uses quick response (QR) codes affixed to registered landmarks allowing users to localise themselves with respect to their route and with navigational instructions given in terms of these landmarks. In addition, the system includes images of each landmark helping users to navigate visually in addition to through textual instructions and route maps. The system runs on a mobile device; the users use the device’s camera to register each landmark’s QR code and so update their position (particularly indoors) and progress through the route itinerary.