Tetsuya Manabe

• Ph.D.
• Professor (Assistant) at Saitama University

This study evaluates the Bluetooth low-energy (BLE) positioning and direction-finding system. The evaluation conditions are set closer to real usage; considering the number of devices, type of devices, and time interval between measurements of the database and measurements of evaluation. Subsequently, positioning and direction-finding performance e...

In this study, we devise several seat selection screens for a movie theater ticket reservation system that applies nudges to achieve spatial crowd smoothing without relying on economic incentives. We design three types of nudges that achieve the following: (i) render seats in less-crowded areas noticeable; (ii) present social norms; and (iii) sugge...

This paper describes a bicycle riding side identification method by image sensing of the asymmetric-shaped road marking orientation in order to realize an advanced bicycle navigation system and a bicycle riding safety support system. Firstly, we define the requirements of road markings in this method as existing in bicycle riding space, having a ve...

Currently, the proportion of independent travel is increasing in Japan. Therefore, earlier studies supporting itinerary planning have been presented. However, these studies have only insufficiently considered rural tourism. For example, tourist often use public transportation during trips in rural areas, although it is often difficult for a tourist...

In this paper, we investigate how ranging performance affects positioning performance on ranging-based positioning method using Wi-Fi RTT (Round Trip Time) and evaluate positioning performance in the corridor based on the access points selection method established using result of the investigation. As the result, we show that positioning performanc...

This paper proposes an algorithm for estimating the location of wireless access points (APs) in indoor environments to realize smartphone positioning based on Wi-Fi without pre-constructing a database. The proposed method is designed to overcome the main problem of existing positioning methods requiring the advance construction of a database with c...

In this study, we develop a system to provide information on the sterilization of baggage carts and arriving passenger baggage to airport (Hereafter referred as arrival baggage) by using ultraviolet (UV) sterilization and information communication technology as border quarantine measures at airports. This system sterilizes arrival baggage and bagga...

This paper attempts to identify which side of the road a bicycle is currently riding on using a common camera for realizing an advanced bicycle navigation system and bicycle riding safety support system. To identify the roadway area, the proposed method performs semantic segmentation on a front camera image captured by a bicycle drive recorder or s...

This paper conducts a comparative evaluation experiment of pedestrian navigation systems including smartwatches in terms of both performance of navigation and safety. First, we construct three types of evaluation systems with different navigation information presented by smartwatches. Next, we conduct an evaluation experiment of the pedestrian navi...

This paper evaluates the bluetooth low energy (BLE) positioning systems using the sparse-training data through the comparison experiments. The sparse-training data is extracted from the database including enough data for realizing the highly accurate and precise positioning. First, we define the sparse-training data, i.e., the data collection time...

This paper indicates a design methodology of Wi-Fi round-trip time (RTT) ranging for lateration through the performance evaluation experiments. The Wi-Fi RTT-based lateration needs to operate plural access points (APs) at the same time. However, the relationship between the number of APs in operation and ranging performance has not been clarified i...

This paper presents a link-weight calculation method based on slow-vehicle (SV) probe data for realizing SV navigation systems. First, we analyze the SV probe data from the viewpoint of limiting speed, road width class, the number of traffic lanes and presence/absence of centerline, and presence/absence of sidewalks. Next, the link-weight calculati...

This paper verifies the effects of ``the number of intersections'' instead of ``walking distance'' as the additional guide information for pedestrian navigation systems. In the prior experiment, we show the possibility that the use of ``walking distance'' degrade the navigation performance. We carry out the experiments comparing ``walking distance'...

This paper proposes a route calculation method for a bicycle navigation system that complies with traffic regulations. The extension of the node map and three kinds of route calculation methods are constructed and evaluated on the basis of travel times and system acceptability survey results. Our findings reveal the effectiveness of the proposed ro...

In this paper, we clarify the importance of performance evaluation using a plurality of smartphones in a positioning system based on radio waves. Specifically, in a positioning system using bluetooth low energy, the positioning performance of two types of positioning algorithms is performed using a plurality of smartphones. As a result, we confirme...

This paper describes designing a new pedestrian navigation system using a comprehensive framework called the pedestrian navigation concept reference model (PNCRM). We implement this system as a publicly-available smartphone application and evaluate its positioning performance near Omiya station's western entrance. We also evaluate users' subjective...

This paper evaluate positioning performance considering the influence of communication state on wireless LAN positioning systems. First, we evaluate positioning performance considering the influence of the presence/absence of connection to access points on the system. As a pre-experiment, we check the influence to access point lookups. With this in...

This paper describes designing a new pedestrian navigation system using a comprehensive framework called the pedestrian navigation concept reference model (PNCRM). We implement this system as a publicly-available smartphone application and evaluate its positioning performance near Omiya station's western entrance. We also evaluate users' subjective...

In this paper, the differences in navigation information design, which is important for kiosk-type pedestrian navigation systems, were experimentally examined depending on presence or absence of carriable navigation information in order to acquire the knowledge to contribute design guidelines of kiosk-type pedestrian navigation systems. In particul...

This paper presents a design methodology for positioning sub-platform from the viewpoint of positioning for smartphone-based location-based services (LBS). To achieve this, we analyze a mechanism of positioning error generation including principles of positioning subsystems and structure of smartphones. Specifically, we carry out the experiments of...

This paper presents two new types of markers of MCubITS (M-sequence Multimodal Markers for ITS; M-Cubed for ITS) that is a ground-based positioning system, in order to advance the WYSIWYAS (What You See Is What You Are Suggested) navigation environments providing intuitive guidance. One of the new markers uses warning blocks of textured paving bloc...

This paper describes the virtual planning office “VPO” from the viewpoint of the quality of spatial comfort “QoSC” toward supplying attractive products for consumers, and constructs a prototype of the VPO system. In addition, the validity of the actual products' effects the VPO focuses on is verified through the prototype. The VPO is a new concept...

This paper makes the pedestrian navigation concept reference model based tripartite comparative study of M-CubITS pedestrian WYSIWYAS navigation systems processed in different places ---terminal type, mail server type, and web server type---. First, we show characteristics of the three types of the M-CubITS pedestrian WYSIWYAS navigation system acc...

This paper presents the platform-oriented pedestrian WYSIWYAS navigation system in consideration of migration of positioning subsystems. The presented system uses M-CubITS using carpet-tiles and visible light communications as positioning subsystems which can seamlessly obtain location and heading-direction information accurately in buildings and n...

This paper proposes the pedestrian navigation concept reference model for characterization and standardization of pedestrian navigation systems in consideration of their taxonomy. The proposed concept reference model consists of three layers ---the service layer, the system layer, and the elemental technology layer--- that divided into four or five...

This paper presents M-CubITS Integrated WYSIWYAS Navigation Environment Box (MI WyNE Box) which can be integrated complementarily with previous M-CubITS pedestrian WYSIWYAS navigation systems. The presented system guides a user to user"s destination intuitively by reading the destination information that has been registered in FeliCa chip or QR cod...

This paper proposes the M-CublTS pedestrian WYSIWYAS navigation system for intuitive guidance using tile carpets that are wide spread in buildings. We adopt tile carpets instead of textured paving blocks that we have used in our previous studies of the M-CublTS pedestrian WYSIWYAS navigation system because of their wide spread use. In addition, sin...

This paper describes construction of the M-CubITS pedestrian WYSIWYAS navigation system both in outdoor and indoor areas, toward realization of the M-CubITS pedestrian WYSIWYAS navigation environment. In outdoor navigation, we construct the experimental Saitama University campus outdoor navigation system "CamNavi" using ordinary mobile phone termin...