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Generalization for Portrayal in Web and Wireless Mapping (GenW 2)

English title Generalization for Portrayal in Web and Wireless Mapping (GenW 2)
Applicant Weibel Robert
Number 120256
Funding scheme Project funding (Div. I-III)
Research institution Geographisches Institut Universität Zürich
Institution of higher education University of Zurich - ZH
Main discipline Other disciplines of Engineering Sciences
Start/End 01.09.2008 - 31.08.2011
Approved amount 294'711.00
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All Disciplines (2)

Discipline
Other disciplines of Engineering Sciences
Other disciplines of Environmental Sciences

Keywords (9)

digital cartography; automated map generalization; portrayal; mobile information systems; web and wireless mapping; adaptation; geographic information systems (GIS); location-based services (LBS); generalization web services

Lay Summary (English)

Lead
Lay summary
The project is situated in the domain of geographic information systems (GIS) and digital cartography. Map generalization (short: generalization) is a key function in digital cartography and GIS, needed for a variety of tasks such as the creation and maintenance of geospatial databases at multiple scales, cartographic visualization at variable scales, and controlled data reduction. More specifically, this project will focus on generalization for web and wireless (or mobile) mapping on small, portable end user devices. Hence, we will pay attention to the gradual evolution of GIS and cartography towards the mobile context. Two PhD projects are pursued, linked by a common vision and building on a common service-oriented software architecture and test database.The first subproject will focus on the integration and management of heterogeneous geospatial information in multiple representation databases (MRDBs). In MRDBs geospatial data are organized in several levels of detail (LODs) in order to support the rendering of maps at the appropriate scale and detail. Geospatial software applications in the mobile context, such as location-based services (LBS), typically make use of highly heterogeneous datasets that originate from very different sources, have different levels of accuracy, different temporal validity, and often involve fuzzy spatial delineations. This subproject therefore seeks to develop new MRDB data models capable of accommodating highly heterogeneous data; new methods for integration of such data into MRDBs; and new methods for information reduction and schematization to harmonize and pre-generalize heterogeneous datasets.While the first subproject will primarily concentrate on the off-line phase of mobile applications that takes place before actual information requests are made to the system, the second subproject will mainly focus on the on-line phase. This subproject will study how generalization operations for web and mobile devices can be made sufficiently fast so that the information portrayal can take place in real-time, and so that the scale and content of the map display can be flexibly and instantaneously adapted to the information requests and the context of a web or mobile user. In particular, we seek to propose and experiment with simplified map designs that allow to derive more powerful computational heuristics for on-the-fly map generalization; develop generalization algorithms for point, line and polygon data that exploit the new heuristics; and develop improved methods for real-time portrayal of points of interest (POIs), including icon placement and resolution of symbol overlaps.
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Employees

Publications

Publication
A Diagnostic Toolbox for Assessing Point Data Generalization Algorithms
Bereuter Pia, Weibel Robert (2011), A Diagnostic Toolbox for Assessing Point Data Generalization Algorithms, in 25th International Cartographic Conference, Paris, France25th International Cartographic Conference, Paris, France.
A Study of the Tourism Web Coverage for Switzerland
Venkateswaran Ramya (2010), A Study of the Tourism Web Coverage for Switzerland, in GIScience 2010, Zurich, SwitzerlandGIScience 2010, Zürich, Switzerland.
Generalisation of point data for mobile devices: A problem-oriented approach
Bereuter Pia, Weibel Robert (2010), Generalisation of point data for mobile devices: A problem-oriented approach, in 13th Workshop on Progress in Generalisation and Multiple Representation, Zurich, Zurich, Switzerland13th Workshop on Progress in Generalisation and Multiple Representation, Zürich, Switzerland.
Ad hoc data integration for mobile GIS applications
Venkateswaran Ramya (2009), Ad hoc data integration for mobile GIS applications, in Doctoral Colloquium, COSIT 2009, Aber Wrac'h, FranceDoctoral Colloquium, Proc. of COSIT 2009, Aber Wrac'h. France.
The GenW2 Framework: An Architecture for Mobile GIS and Mapping Scenarios
Venkateswaran Ramya, Bereuter Pia, Burghardt Dirk, Weibel Robert (2009), The GenW2 Framework: An Architecture for Mobile GIS and Mapping Scenarios, in Proceedings AGILE 2009, Hannover, GermanyAGILE 2009, Hannover, Germany.
The Use of Filters for Adaptive Mobile Mapping Scenarios
Bereuter Pia, Venkateswaran R., Weibel Robert (2009), The Use of Filters for Adaptive Mobile Mapping Scenarios, in Proceedings of AGILE 2009 Workshop on Adaptation in Spatial Communication, Hannover, GermanyProceedings of AGILE 2009 Workshop on Adaptation in Spatial Communication, Hannover, Germany.
User Adaptive Trip Planner
Venkateswaran Ramya, Bereuter Pia (2009), User Adaptive Trip Planner, in Ordnance Survey Geospatial Mashup Challenge, Durham, UKGISRUK 2009, Durham, UK.

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
GIScience 2010 17.09.2010 Zurich, Switzerland
AGILE 2009 05.06.2009 Hannover, Germany
GISRUK 2009 03.04.2009 Durham, UK


Self-organised

Title Date Place
GIScience 2010 17.09.2010 Zurich, Switzerland

Associated projects

Number Title Start Funding scheme
138109 Generalization for Portrayal in Web and Wireless Mapping (GenW2+) 01.01.2012 Project funding (Div. I-III)
138109 Generalization for Portrayal in Web and Wireless Mapping (GenW2+) 01.01.2012 Project funding (Div. I-III)
116302 Data enrichment for automated map generalization (DEGEN 2) 01.04.2007 Project funding (Div. I-III)

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