FOSS4G 2009 Posters

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Posters will be accepted from Case Studies, Projects or Programs that are Geospatial and have a strong Open Source and/or Open Standards theme. Refer to http://2007.foss4g.org/presentations/posters/ for examples of posters from prior years.

Contents

Coordinators

  • Shoaib Burq < s a b u r q AT gmail.c om>
  • Antti Roppola <ha s t ur AT gmail.c om>

Posters

Title Abstract Author Author Affiliations
1. International Coastal Atlas Network Poster Brochure ICAN aims to be a global reference for the development of coastal web atlases (CWAs). Via the expertise of more than 35 member organisations. ICAN intendes to inform, guide and influence matters related to research, development and use of CWAs. Kathrin Kopke, Kathy Belpaeme and Juan Arévalo Coastal and Marine Resources Centre, Kustbeheer, European Environment Agency
2. Distant Early Warning System - Information Logistics with FOSS and OGC Standards. Poster Poster will be shown in conjunction with DEWS Live Demonstration. DEWS user interface based on uDig and GeoTools, workflows, system architecture, details of information logistics and FOSS usage will be depicted on the poster. Matthias Lendholt, Martin Hammitzsch GFZ German Research Centre for Geosciences
3. An open source geo-transformation library for data custodians.Media:03_knudsen.pdf‎ The KMStrlib geo-transformation library, which has been in active use and development since the 1960s at KMS (National Survey and Cadastre, Denmark), is now finally being released under an open source licence.

KMStrlib provides a unified interface to a large number of cartographic projections, and geophysical transformations (including change of vertical and horizontal datums and epochs).

Due to KMS's role as a long term geodata custodian, care has been taken to ensure that the transformations implemented are two way symmetric (to the extent possible: some transformations are inherently vaguely defined, and must be implemented by stochastic predictions, rather than projections). This has led to the adoption of a technique of dual self-checking transformations, effectively doing a roundtrip "forward-inverse" operation for all library calls. While elaborate, this ensures that uncaught implementation blunders, and asymmetric singularities are diagnosed and reported. This is essential for long term (multiple century scale) geodata interoperability.

The poster presentation will include schematic details of the dual self-checking procedure, and illustrate the characteristics of the KMStrlib implementation of a fast, highly precise transverse mercator projection, remaining accurate at the 0.03 mm level even at distances 7500 km from the central meridian.

Thomas Knudsen, Karsten Engsager, Knud Poder, Simon Lyngby Kokkendorff KE: DTU Space, Copenhagen, Denmark; KP: Ølstykke, Denmark (Emeritus, KMS); TK, SLK: National Survey and Cadastre (KMS), Copenhagen, Denmark;
4. Quality control of digital elevation models.

Poster

In this poster presentation, we describe how the PINGPONG program (FOSS distributed under the GPL) has been used to implement a quality control procedure for laser scanned DEMs. The approach used is independent of navigational (GPS/INS) data and ground control points.

Fundamentally, PINGPONG is a high speed gridding program for scattered geodata. It uses a simple, but efficient, data management technique to speed up the gridding procedure.

The speed of PINGPONG makes it feasible to include a large amount of gridding in our quality control procedure, even for national scale datasets (in our case involving in the order of 20 billion data points), so the procedure is based on analysis of the local difference of a digital surface model, and a digital terrain model.

Effectively, this means that we are generating two interim elevation models in order to test one point cloud for its suitability for generating a final model. While this may seem somewhat extravagant, experience shows that it is actually both useful and efficient.

Thomas Knudsen, Brigitte C. Rosenkranz National Survey and Cadastre (KMS), Copenhagen, Denmark
5. INSPIRE compliant geoservices for topographic databases of the Lombardy Region in Italy. Poster Aim of the work is the implementation of geoservices compliant with the European INSPIRE Directive for distributing Lombardy Region geotopographic databases at scale 1:2000.

The services are based on OpenGIS Catalogue Service Implementation Specification (CS-W 2.0.1) and OpenGIS Web Map Service (WMS 1.3.0) Implementation Specification as required by the Directive itself. They were implemented with Open Source Software: UMN Mapserver for WMS service and Geonetwork for metadata handling (CS-W). Test data used for the prototype are compliant with the Standard for modelling geographic data recently approved by the Lombardy Region (february 2008). The infrastructure is freely available for all territorial Authorities having such a kind of geotopographic database. A website with a demo version is already online (http://ows.como.polimi.it) and will be shown if an internet connection is available.

Maria Antonia Brovelli, Michele Beretta, Marco Negretti Politecnico di Milano, Italy
6. Electronic Tag Data Visualisation Poster In 1981 CSIRO Marine and Atmospheric Research (CMAR) began development of a database to house data on conventional tagging of marine fishes. Since that time CMAR’s tagging projects have expanded and incorporated a wide range of tags from the simple conventional through to the latest electronic tags, and have began tagging marine mammals and birds. The amount of data being generated has vastly increased since 1981. CMAR has promoted a centralisation of tag data to ensure data are widely accessible, secured against loss, and to reduce redundancy amongst projects. One criticism of this approach has been a difficulty in data access within and across sites. Through the Electronic Tag Support Systems project CMAR has developed a web portal, using SVG, to the tagging database allowing users to browse through the electronic tag data and easily extract data of interest for further analysis. Tag tracks are displayed on an interactive map and archival data displayed in interactive graphs. Paavo Jumppanen, Jason Hartog, Scott Cooper CSIRO Wealth from Oceans Flagship
7. OldMapsOnline.org: Open Source & Online Tools for Old Maps. Poster OldMapsOnline.org is a research project targeted to the software development specialized to old map collections. We are designing online tools for collaborative georeferencing, annotation, 3D visualization, accuracy analysis and geometadata specification.

We provide free software and tutorials for online publishing of your scanned historical maps. We have developed IIPImage JPEG2000 Image Server: open source server software for fast delivery of the ultra high resolution raster imagery directly from your master scans in formats like JPEG2000 or TIFF. This software can be used for free on your servers for the image publishing. You can also publish your maps as pre-rendered tiles (zoomify) without any extensive configuration of your webserver. There is a whole collection of attractive pan&zoom viewers for the visualization of your scanned maps in your web sites - all viewers are compatible with both publishing techniques (JPEG2000/TIFF or prerendered tiles) - and they are mostly available including the source code, so you can easily customize them according your needs.

Once your maps are online you can use our web-based tools to georeference and visualize them in 3D with Google Earth web browser plugin. Your scanned maps can simply overlay each other as well as the popular interactive base maps like OpenStreetMap, Bing, Yahoo or Google Maps. You can even analyze their cartometric accuracy - all of this within the web browser.

Our project is in progress but we have already published several software tools and we have prototypes for the complete workflow. More info at http://www.oldmapsonline.org/

Klokan Petr Pridal Moravian Library Brno, Czech Republic
8. geo-spatial.org: The Reference Point for the Romanian FOSS4G community Poster A geospatial portal is a human interface to a collection of online geospatial information resources, including data sets and services (OGC, 2004). geo-spatial.org is a collaborative effort by and for the Romanian community to facilitate the sharing of geospatial knowledge and the discovery and publishing of free geographic datasets and maps. It was created by a small team of young scientists as an attempt to overcome the Romanian specific geospatial dysfunctions.

Anyone can make a contribution by submitting articles or datasets for publication, adding comments to the existing articles, join the discussion on the mailing list or users forum. The content is managed by Textpattern, a powerful and flexible, open source content management application. For supplementary, specific functionality, custom modules were built. Other free applications are providing server-side functionality: MySQL (relational database management system), PHP, Python, Java (server-side scripting languages), Apache (webserver), Tomcat (servlet container), phpMyAdmin, phpPgAdmin (web clients for database management). For geospatial data processing and management, top open source applications were also integrated in the website: Mapbender (geodata management using OGC OWS architectures), PostGIS (is an extension for the PostgreSQL enterprise relational database, used to store the geospatial data), GeoNetwork Opensource (a standards based catalog application to manage spatially referenced resources), Geoserver (a standard compliant geospatial server, used to create specific services like WMS, WFS, WCS), OpenLayers (a pure JavaScript library for displaying map data), GeoWebCache (provides a Java-based WMS/TMS server, with pluggable caching mechanisms and rendering backends), Mapnik (render the base map), GDAL/OGR (used inside chained scripts for data conversion and reprojection). The website is divided in several functional sections. In each section, the information is placed in predefined categories and sub-categories. Most of the sections contains written materials: - Articles - theoretical essays on geospatial topics; - Tutorials - materials indented to teach the user, in a step by step manner, how to work with certain datasets, software, technique etc; - Reviews - reviews for geospatial datasets, cartographic products, software, articles, books; - Links - collections of references to other online resources; - Blog - a non conventional section for publishing thoughts, ideas, findings etc. The content of these sections can be accessed quickly via RSS and ATOM feeds. The Download section contains categories for all kind of geospatial data (digital elevation models, processed satellite images, vector data: communication networks, localities, hydrographical networks, contour lines, points of interest etc.) at different scales and spatial extend. Other categories contain documents (PhD thesis, scanned books & articles), old maps, software. The website interface was carefully designed, respecting the existing W3C (World Wide Web Consortium) standards and separating the structure from the presentation by using strict XHTML markup and CSS (Cascade Style Sheets). New web technologies, like AJAX (Asynchronous JavaScript and XML), were also used to increase the interactivity. The goal was to obtain a simple, friendly and accessible environment for geospatial data and knowledge publication.

More details at http://www.geo-spatial.org/


Vasile Crăciunescu(1), Ştefan Constantinescu(2) (1) National Meteorological Administration - Bucharest, Romania; (2) Faculty of Geography - University of Bucharest, Romania
9. WEBGIS for the tangible and intangible assets of a public agency The ever-growing dissemination of Geographic Information Systems (GIS) in the Public Administration highlights the potential and effectiveness of this method of approach to the management of spatial databases. This is applicable both to the tangible and intangible assets of a public agency. An important moment for the sharing and communication of the data in a GIS is their publication and dissemination on the Internet through WebGIS and geoservices.

On the basis of these considerations, we chose to design and build a WebGIS for the management, use and protection of all the tangible and intangible heritage of the municipality of Orgosolo, recorded and documented in a project by the “Centre for monitoring and documenting the local traditions and skills”. The WebGIS was built using only free / open-source software, both for the advantages in terms of customization and interoperability, and in order to limit the building and management costs. The first part of the work regarded building the GIS. The used software was gvSIG ( Conselleria de Infraestructuras y Transporte Valencia). The database was built in MySQL and then connected with gvSIG. The GIS included the data on the urban architecture and murals regarding the tangible heritage, and on the traditional skills for the intangible heritage. The next step was implementing the GIS in a WebGIS system thusly structured: • Apache Web Server • Geoserver WebGIS Geoserver (http://docs.codehaus.org/display/GEOS/Home) was chosen due to being an open source (GPL) WebGIS server written in Java and supporting the OGC (Open Geospatial Consortium) standards, such as the WFS, WMS and WCS geoservice protocols


Antonio Pala, Giuseppina Vacca Faculty of Engineering, University of Cagliari, Italy
10. Northern Queensland Wildfire Mitigation Project - Improving Community Safety Through Informed Hazard Reduction Poster The Northern Queensland Wildfire Mitigation Project includes a website with online mapping and a data warehouse, available to all agencies involved in the management of wildfire in northern Queensland. Agencies can access more than 140 pre-contructed fire district maps and have access to over 60 mapping layers in the online tools, provided at no cost to the user.

The project, established by Atherton Tablelands Geographic Information Systems (ATGIS), with assistance from many stakeholder agencies, took little more than 12 months to complete and was officially launched in June 2008.

The online mapping tools take advantage of free and open source software including: FreeBSD, PostgreSQL, PostGIS, Apache Webserver, UMN MapServer & GoogleMaps API, and provide users with a rich experience, enabling them to digitise and attribute objects online, and either submit them for QA and inclusion in master datasets, or in emergencies, publish data to all users immediately. Users can also submit entire GIS datasets and other digital files as an input to the regular collation of the key fire infrastructure datasets, maintained as part of this project.

The website contains multiple menu items: - Help - animated help files and user guides to assist new users of the website; - News - articles identifying improvements to the website and freshly published data; - Create maps - online tools for map creation, including online digitising tools; - Resources - collections of other resources available for download, including documents, maps and GIS datasets in multiple formats. - Download maps sub menu - collections of existing maps, available for download as PDF or JPG, with the spatial extents of each map presented as objects in a Google map window; - File Exchange - A facility for publishing documents to the website and for uploading datasets and information for consumption by other stakeholders - Submit Feedback - An online form for specifying bugs, data issues and suggested improvements, formatted to prompt users to describe what they were doing, what they expected as a result and what they observed.

More details at http://wildfire.atgis.com.au/

Alistair Hart, Carl Schedlich Atherton Tablelands Geographic Information System, Atherton QLD, Australia
11. Drift-X WPS: An atmopsheric dispersion simulation Web-GIS platform Our past research treated the problem of integrating Drift-X, a Gaussian based atmospheric dispersion model within a desktop GIS framework. A dedicated pesticide spray drift model was implemeted within Quantum GIS using its Python bindings capabilities and the results were presented at FOSS4G2008.

The present work aims now to adapt this model to Web-GIS platform using the ZOO Open WPS Platform . WPS implementation is aimed in order to automate the model setup and to perform on-line simulations. The main idea is to use WPS service that are inbuilt in the ZOO Kernel that can respond with XML document to the Getcapabilities, DescribeProcess and ExecProcess requests sent from the client browser. Input parameters needed by the model are sent to the ZOO server from an advanced OpenLayers client.

Subsequently, the Drift-X WPS module processes the DEM layer for the given extent, deliver it to the model with other user-defined parameters, run the model and then send the results to a WMS MapServer installation in a standard GIS format. The results are finally tiled by MapServer and potrayed within the OpenLayers client. The present WPS implementation will be useful for better agricultural practices by minimizing pesitiside use. Further, the ZOO Open WPS Platform implemented in this research could be enhanced with Sensor Network functionality to support precision farming.

Nicolas BOZON,

Gérald FENOY, Venkatesh RAGHAVAN, Bijan MOHAMMADI

3LIZ(FR),

Geolabs (FR), Osaka City Univ.(JP), Montpellier2 Univ. (FR)

12. Application of SWAT for Sediment Yield Estimation in a Semi-arid Mountainous Basin Poster The advanced SWAT (Soil and Water Assessment Tool) model is based on hydrologic process and needs to be calibrated and validated prior to its application. This paper presents a case study conducted in Chaohe river upstream to verify the applicability of SWAT for predicting sediment yields in a semi-arid mountainous basin, in which the parameterization of HRU is particularly carried out to reflect the impact of rugged topography on hydrologic process in comparison of the default computation methods. With the historical gauge records, the above modification was well tested in the study area. The monthly measured runoff and sediment yields at Dage guage during the period 1985-1987 was used to calibrate the model while data from 1988 to 1990 was used for model validation. The simulation results revealed that the SWAT with the above improvement could be applied in a rugged mountainous region for erosion control and watershed management. Xianfeng SONG,

Zheng DUAN

GIS Lab.,

Graduate University of Chinese Academy of Sciences(CN)

13. Use of Open Source Geospatial Software within the Remote Sensing Centre, QLD. Poster The Remote Sensing Centre (RSC), within the Queensland Department of Environment and Resource Management (DERM), is a leading group within remote sensing in Australia. The RSC currently uses a combination of various open source software to meet much of its geospatial processing requirements. Indeed, the systems in place at the centre have been largely developed around open source tools, which is unusual for a government agency. Principal software includes: PostGIS, QGIS, GDAL/OGR, Python and R. This poster discusses the systems in place and our experience with their implementation and use. Rebecca Trevithick,

Sam Gillingham

Remote Sensing Centre,

Queensland Department of Environment and Resource Management (DERM)

14. Developing a 3D Indoor Pedestrian Simulator using a spatial DBMS. Most crowd simulation models for pedestrian dynamics are based on analytical approach using experimental settings without being related to real world data. In order for the models to be adapted to real world applications such as fire evacuation, some technical aspects first must be resolved. First, the base data should represent the 3D indoor model which contains semantic information of each space. Second, in order to communicate with the indoor localization sensors to capture the real time pedestrians and to store the simulation results for later uses, the data should be in a DBMS instead of files. The purpose of this paper is two folds. One is to suggest a DBMS-based 3D modeling approach for pedestrian simulations. The other is to improve the existing floor field based pedestrian model by modifying the dynamic field. We illustrated the data construction processes and simulations using the PostGIS DBMS and the enhanced pedestrian model. Hyeyoung Kim,

Hyunjin Yi, Chulmin Jun

Dept. of Geoinformatics,

University of Seoul, Seoul, Korea

15. Developing a Campus Spatial Information System using the PostGIS. Most 3D models found in the literature focus on theoretical topology for exterior volumes. However, implementing a full topology for the indoor spaces is less practical due to the computational complexity and current spatial DBMSs do not support explicit 3D topological relations between geometric components. In this study, an alternative method to build a 3D indoor model with less complexity using a spatial DBMS is suggested. Focusing on the fact that semantic attributes can be stored on the floor surface, we suggest a multi-layered 3D model for indoor spaces. We show the process to build the proposed model in the PostGIS. And, then, as an example application, we illustrate the process to build and run a campus building information system. Hyunjin Yi,

Hyeyoung Kim, Chulmin Jun

Dept. of Geoinformatics,

University of Seoul, Seoul, Korea

16. Parallel processing, some GIS applications and their performances on IBM Cell Broadband engine and Intel multicore platforms Poster Parallel processing has been established as the best way to scale performance in the near future. Most of the GIS algorithms are amenable to parallel processing. We present herein some preliminary results from parallelization of common GIS modules on IBM Cell Broadband Engine, which forms the core of playstation3. We also show results of our OpenMP implementation, and some programming practices necessary for large scale applications. Bharghava R,

Jyothish Soman,

K S Rajan

International Institute of

Information technology-Hyderabad, India

17. Automated Segmentation and Generalisation of Raster Imagery This study reviews past and current research activity in the area of generalisation of spatial data and presents a new methodological framework for segmentation and generalisation of raster data. In order to overcome drawbacks associated with supervised classification and generalisation of raster data, an Interactive Automated Segmentation and Raster Generalisation Framework (IASRGF) was developed and tested. Test results of the IASGRF shows that all objects derived from the generalisation of landuse data over Canberra, Australia, were well classified and mapped. The error assessment indicates that the percentile classification accuracy is 85.5%, whereas the commission error is relatively high (38.5%). More importantly, the maximum likelihood classifier using training sites and associated ground truth data suggests that the Kappa index is 0.798, which can be interpreted as a reliable and satisfactory classification result. In order to further enhance supervised classification, a post-classification was carried out. As a result, this extra process improved the overall classification accuracy. Sharon Kazemi and Samsung Lim School of Surveying and Spatial Information Systems, UNSW, Sydney, Australia
18. A Knowledge-Based Algorithm for Generalization of Line and Polyline Data Current map production systems provide reasonably complex tools and procedural cartographic protocols, however, cartographers’ interactions are essential for selecting information, symbolizing features, maintaining topological relationships, and visualizing graphical conflicts. Although an efficient generalization technique would improve the graphical quality and legibility of maps, existing techniques use an “ill-structured” approach because it is hard to devise an algorithm to solve the problem. On the other hand, expert systems use a collection of “rules of thumb” that are mainly heuristics methods or principles for decision making. It is an alternative solution to the aforementioned problem. In this research, “Generalization Expert System (GES)”: a knowledge-based solution is developed. Key steps undertaken in building GES and its components are presented here. GES is developed in Java and Python for the delivery of simplified spatial data. Its capabilities are demonstrated in a case study through simplifying roads, native vegetation and elevation data to derive 1:500,000 scale from the source maps at 1:250,000 scale over Canberra, Australian Capital Territory, Australia. Although a number of advanced applications have been developed with high technical skills, GES has a simple and user-friendly GUI that can benefit users with lesser technical skills and knowledge of spatial data management. Sharon Kazemi and Samsung Lim School of Surveying and Spatial Information Systems, UNSW, Sydney, Australia

Format

  • Location: Posters will be shown in the Lower Parkside Foyer
  • Size: Posters are to be printed as portrait (A0 or A1).
  • Schedule: The FOSS4G poster session will be during morning tea breaks on Thursday and Friday. Poster presenters should plan to be near their posters to talk to viewers and answer questions.
  • Quantity: The FOSS4G poster session will have room for as many as 32 posters.
  • Acceptance: On topic Posters will be accepted "first come, first served" until there is no more room or the deadline passes.
  • License: Posters should be made available publicly in PDF format to be displayed on the FOSS4G website as per the timeline.

Printing

  • Contributors are responsible for printing their own posters. One option for printing posters close to the conference venue is the Ultimo/Darling Harbor Kwik Kopy

Timeline

  • Interested posters should add their
Date Poster Milestones
17 Aug 2009 Call for posters
21 Sep 2009 Close call for posters
6 Oct 2009 Posters complete and added to website
21 Oct 2009 Posters displayed at FOSS4G conference
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