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检索条件"丛书名=Lecture Notes in Geoinformation and Cartography"

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GPS Data and Car Drivers' Parking Search Behavior in the City of Turnhout, Belgium 11

GPS Data and Car Drivers' Parking Search Behavior in the Cit...

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11th Symposium on Geoinformatics for Intelligent Transportation (GIS)

作者： van der Waerden, Peter Timmermans, Harry Van Hove, Lies Eindhoven Univ Technol Fac Built Environm Urban Planning Grp NL-5600 MB Eindhoven Netherlands Hasselt Univ Transport Res Grp B-3590 Hasselt Belgium

ISBN: (纸本)9783319114637;9783319114620

This paper describes an exploratory study regarding parking search behavior. Based on GPS tracks of 97 car trips, the temporal and spatial components of parking search behavior are investigated in more detail. The data collection took place in November 2012 in the city of Turnhout, Belgium. The paper presents the way the data collection has been organized, the way the data have been analyzed, and some findings of the study. It appears that GPS tracking can be used to investigate both the temporal and spatial aspects of parking search behavior. The average parking search time found in this study is 1 min and 18 s (approximately 14 % of the total travel time). The use of street segments for parking is influenced by distance to the city center, distance to nearest parking facility, presence of shops, and parking tariffs.

关键词： GPS Parking search Behavior TransCAD GIS ostrava 2014

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Change Detection in CityGML Documents 9th

Change Detection in CityGML Documents

引用

Conference on 3D geoinformation Science (3D GeoInfo)

作者： Redweik, Richard Becker, Thomas Tech Univ Berlin Inst Geodesy & Geoinformat Str 17 Juni D-10623 Berlin Germany

ISBN: (纸本)9783319121819;9783319121802

With the increasing importance and usage of virtual 3D city models, a suitable continuation process becomes necessary to ensure the sustainability of 3D city models. If a new model was gathered e.g. by processing from LIDAR data or new data acquisition-knowledge about the differences between the old and the new city model is beneficial. This would allow the versioning, update and historicization. In this contribution we will present a concept for the detection of changes between two CityGML instance documents to ensure sustainable continuation processes in the field of 3D city models. The proposed concept will be based on techniques of existing change detection algorithms and object detection algorithms from the field of image analysis. The detected changes will be saved in a well-defined format so that following applications such as database operations can be performed or can make use of them. Finally, we examine the performance of our proof-of-concept implementation.

关键词： CityGML 3D city model Change detection Historicization Hough transform

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Improving the Consistency of Multi-LOD CityGML Datasets by Removing Redundancy 9th

Improving the Consistency of Multi-LOD CityGML Datasets by R...

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Conference on 3D geoinformation Science (3D GeoInfo)

作者： Biljecki, Filip Ledoux, Hugo Stoter, Jantien Delft Univ Technol Sect GIS Technol Delft Netherlands Kadaster Prod & Proc Innovat Apeldoorn Netherlands Geonovum Amersfoort Netherlands

ISBN: (纸本)9783319121819;9783319121802

The CityGML standard enables the modelling of some topological relationships, and the representation in multiple levels of detail (LODs). However, both concepts are rarely utilised in reality. In this paper we investigate the linking of corresponding geometric features across multiple representations. We describe the possible topological cases, show how to detect these relationships, and how to store them explicitly. A software prototype has been implemented to detect matching features within and across LODs, and to automatically link them by establishing explicit topological relationships (with XLink). The experiments ran on our test datasets show a considerable number of matched geometries. Further, this method doubles as a lossless data compression method, considering that the storage footprint in the consolidated datasets has been reduced from their dissociated counterparts.

关键词： Multi-LOD Topology XLink CityGML Compression

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3D Indoor Location on Mobile Phones Using Embedded Sensors and Close-Range Photogrammetry 11th

3D Indoor Location on Mobile Phones Using Embedded Sensors a...

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11th International Symposium on Location Based Services

作者： Li, Xiujuan Zhou, Yan Xiong, Hanjiang Wuhan Univ State Key Lab Informat Engn Surveying Mapping & R Wuhan 430072 Peoples R China

ISBN: (纸本)9783319118796;9783319118789

Indoor positioning on mobile phones has become more and more important to many applications. This paper presents a sensor-based 3D positioning system on mobile phones. It also proposes an efficient approach to determine the initial position which has a great influence on the position precision. By taking a photo of the pre-deployed cross board, the camera's position can be identified immediately using the principle of single-photo resection. The proposed positioning scheme performs location estimation in three phases. First, use cross boards to precisely determine the initial position. Second, employ accelerometer, magnetometer embedded in mobile phones and INS to track the user's position automatically. Finally, visualize the user's location in the 3D model of the building based on GPU rendering technology. The experiment carried out in this paper has good results and indicates that the new method with the embedded sensors and close-range photogrammetry is a promising solution for indoor location.

关键词： 3D indoor visualization Mobile devices 3D indoor location LBS Close-range photogrammetry Inertial navigation Sensors

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Crowd Computing Framework for geoinformation Tasks 7th

Crowd Computing Framework for Geoinformation Tasks

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7th International Workshop on Information Fusion and Geographic Information Systems - Deep Virtualization for Mobile GIS (IF&GIS)

作者： Smirnov, Alexander Ponomarev, Andrew Russian Acad Sci St Petersburg Inst Informat & Automat 39 14th Liniya St Petersburg 199178 Russia ITMO Univ St Petersburg 197101 Russia

ISBN: (纸本)9783319166674;9783319166667

In the paper a general purpose crowd computing framework architecture is discussed. The proposed framework can be used to compose crowd computing workflows of different complexity. Its prominent features include ontological description of crowd members' competencies profiles;automatic assignment of tasks to crowd members;the support of both human and non-human computing units (hybrid crowd);and spatial features of crowd members which make way for employing the proposed framework for a variety of crowdsourced geoinformation tasks.

关键词： Crowd computing Crowdsourcing Ontology Profiling

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Aggregating Spatio-temporal Phenomena at Multiple Levels of Detail 18th

Aggregating Spatio-temporal Phenomena at Multiple Levels of ...

引用

18th Association-of-Geographic-Information-Laboratories-for-Europe Conference on Geographic Information Science (AGILE)

作者： Silva, Ricardo Almeida Pires, Joao Moura Santos, Maribel Yasmina Leal, Rui Univ Nova Lisboa NOVA LINCS Lab Lisbon Portugal Univ Minho ALGORITMI Res Ctr Braga Portugal 2GiveInsights Lisbon Portugal

ISBN: (纸本)9783319167879;9783319167862

Spatio-temporal data are collected at high levels of detail (LoDs). Both spatial and temporal characteristics of data can be expressed at different LoDs. Depending on the phenomenon and the analytical goal, different LoDs can be suitable for a user's analysis since different LoDs may provide different perceptions of a phenomenon. It is crucial to model spatio-temporal phenomena having in mind that different LoDs can be useful in their analyses. We propose a granularities-based model in order to model spatio-temporal phenomena at multiple LoDs. It defines the concept of LoD and afterwards the atom generalization, granular synthesis and compressed granular syntheses set concepts to express a phenomenon at some LoD into a coarser one. This occurs in a semi-automatic way as the user just needs to define functions that create the compressed granular syntheses sets. A demonstration case was conducted applied to a real dataset about accidents in USA in which the model proposed proved to be useful to reduce the amount and complexity of data when the phenomenon is observed at coarser LoDs than the ones at which data is provided.

关键词： Granularity Spatio-temporal data Multiple levels of detail

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Semantic Recommender System for Touristic Context Based on Linked Data 7th

Semantic Recommender System for Touristic Context Based on L...

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7th International Workshop on Information Fusion and Geographic Information Systems - Deep Virtualization for Mobile GIS (IF&GIS)

作者： Cabrera Rivera, Luis Vilches-Blazquez, Luis M. Torres-Ruiz, Miguel Moreno Ibarra, Marco Antonio Inst Politecn Nacl UPALM Zacatenco Ctr Invest Comp Mexico City 07320 DF Mexico Univ Nacl Colombia Bogota DC Colombia

ISBN: (纸本)9783319166674;9783319166667

The lack of personalization presented in touristic itineraries that are offered by travel agencies involve a little flexibility. Basically, they are designed with the points of interest (POIs) that have more relevance in the area. On the other hand, there are POIs that have agreements with the agencies, which originate a excluding POIs that could be interesting for the tourist. In this work, a method capable to use the user preferences, like POIs and activities that user wants to realize during their vacations is proposed. Moreover, some weighted features such as the max distance that user wants to walk between POIs, and opinions of other users, coming from the web 2.0 by means of social media are taken into account. As result, a personalized route, which is composed of recommended POIs for the user and satisfied the user profile is provided.

关键词： Linked data

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Optimal Path Problem with Possibilistic Weights 11

Optimal Path Problem with Possibilistic Weights

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11th Symposium on Geoinformatics for Intelligent Transportation (GIS)

作者： Caha, Jan Dvorsky, Jiri Palacky Univ Fac Sci Dept Geoinformat Olomouc 77146 Czech Republic

ISBN: (纸本)9783319114637;9783319114620

The selection of optimal path is one of the classic problems in graph theory. Its utilization have various practical uses ranging from the transportation, civil engineering and other applications. Rarely those applications take into account the uncertainty of the weights of the graph. However this uncertainty can have high impact on the results. Several studies offer solution by implementing the fuzzy arithmetic for calculation of the optimal path but even in those cases neither of those studies proposed complete solution to the problem of ranking of the fuzzy numbers. In the study the ranking system based on the Theory of Possibility is used. The biggest advantage of this approach is that it very well addresses the indistinguishability of fuzzy numbers. Lengths of the paths are compared based on the possibility and the necessity of being smaller than the alternative. The algorithm offers the user more information than only the optimal path, instead the list of possible solutions is calculated and the alternatives can be ranked using the possibility and the necessity to identify the possibly best variant.

关键词： Fuzzy numbers Dijkstra algorithm Optimal path Uncertainty

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Train Platforming Problem 11

Train Platforming Problem

引用

11th Symposium on Geoinformatics for Intelligent Transportation (GIS)

作者： Janosikova, L'udmila Krempl, Michal Univ Zilina Fac Management Sci & Informat Dept Math Methods & Operat Res Zilina 01026 Slovakia Tech Univ Ostrava Inst Transport Fac Mech Engn Ostrava 70833 Czech Republic

ISBN: (纸本)9783319114637;9783319114620

The train platforming problem consists in the allocation of passenger trains to platforms in a railway station. One of the important problems a dispatcher has to solve, especially in a large railway station, is to decide, at which platform track an approaching train should arrive. There is a tool helping him in his job called the track occupancy plan. The plan specifies for each arriving or departing train the platform track along with the time slot during which the track will be occupied by the train. This paper deals with a method for computer-aided design of the track occupancy plan. The problem is formulated as a bi-criterion mixed integer programming problem. The first objective is to minimise the deviations of the arrival and departure times proposed by the model from the times specified by the timetable. The second criterion maximises the desirability of the platform tracks to be assigned to the trains. The model is solved using a lexicographic approach and the local branching algorithm. The model was verified by using the real data of Prague main station. Results of the experiments are included.

关键词： Train platforming Scheduling Mixed integer mathematical programming Multiple-objective programming

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Digitization of Old Globes by a Photogrammetric Method 27th

Digitization of Old Globes by a Photogrammetric Method

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27th International Cartographic Conference (ICC)

作者： Talich, Milan Ambrozova, Klara Havrlant, Jan Bohm, Ondrej Res Inst Geodesy Topog & Cartog Zdiby Czech Republic

ISBN: (纸本)9783319177380;9783319177373

This chapter describes a method of digitization of old globes, including a method that allows the general public access to the digitalized globes via the Internet. The goal is to develop the technologies that enable the use of old globes in their digital form online. This will provide an opportunity to study the old globes located in various historical collections and allow the public to compare them with current or old maps and globes without visiting the collection. The digitization is done by a photogrammetric method using an original device designed for this purpose. This device allows for digitizing globes with a diameter ranging from 5 to 120 cm. This chapter presents two approaches to digital raster data processing necessary for georeferencing. The accuracy of georeferencing of the digital image corresponds to the accuracy of the map base on the globe. The digitalized globes can be compared with current map data or with other old maps and globes by increasing the transparency of individual layers. The chapter includes examples of digitized globes and shows how to access the models via the Internet.

关键词： Digital globe Digitizing device Transformations 3D model

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