Digital Commons Network^™

The Analysis And Deployment Of A Fully Open Monitoring System In The Sri Lankan Deduroya Basin: The 4onse Project, Massimiliano Cannata, Daniele Strigaro, Imran Shahid, Rangajeewa Ratnayake, B.H. Sudantha

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

The 4onse project studies non-conventional monitoring systems fully based on open technologies (hardware, standard protocols, software and data) for the management of resources and natural hazards in developing countries. After the design of hydro-meteorological stations and software for the collection, management and distribution of data, the study involves the installation of 30 stations in the Deduroya Oya river basin in Sri Lanka. The system will be analysed to fully understand the real cost of ownership, data quality and applicability in real situations. If properly validated, these systems can provide an alternative solution, effective and sustainable for the protection of property …

Ndvi And Lst Extraction Of Modis Data Under A Gis Open Source Application - Rickettsia Study Case In Angola, Ana Cláudia Teodoro, Lia Duarte, Patrícia Barradas, T. L. Mateus, Zoraima Neto

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

Fevers of unknown origin can have different aetiologies. The overlapping symptomatology of rickettsial infection and other endemic diseases that cause fever leads to a misdiagnosis or under-diagnosis of spotted fever group of Rickettsia (SFGR).

To better understand the epidemiology of this vector-borne disease in Angola, a comprehensive seroprevalence study was conducted investigating the exposure to SFGR in a sample of 92 febrile, Malaria and Yellow Fever negative human plasma specimen, collected to the study of the national surveillance of febrile syndromes between 2016 and 2017, in Angola.

The seroprevalence of IgG antibodies against SFG Rickettsia in humans was calculated by …

Crowdsourcing The Georeferencing Of Historical Pictures, Timothée Produit, Nicolas Blanc, Sarah Composto, Jens Ingensand, Loic Furhoff

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

Countless organizations own archive pictures which are not used due to the difficulty of localizing them. Only the participation of volunteers can help to identify the image content. Through an accessible web interface called smapshot, citizens are able to georeference historical images without any prior specific competence. To avoid the volunteers to face the complexity of 3D digitization and navigation, we implemented a state of the art photogrammetry camera orientation algorithm in the platform. Currently several thousand images from all around Switzerland have been georeferenced by the crowd. At this time the tool is mainly used by the population for …

Istsos Version 3, Cannata Massimiliano, Milan Antonovic, Daniele Strigaro, Mirko Cardoso

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

istSOS version 3 is a new full stack open source application framework that, implementing the Sensor Observation Service standard from the OGC and including some special features, offers the capability to manage and disseminate observation from sensors networks. istSOS3 has been redesigned with the mission to solve the problems of high loads environments and quality of service. After some recent researches that have shown that istSOS version 2 is not adequate to meet high demanding environment in terms of high concurrency, big data and performance, istSOS version 3 has been rewritten from ground up taking advantages from the latest technologies …

Usability Engineering For Successful Open Citizen Science, Jan Alexander Wirwahn, Thomas Bartoschek

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

Do-it-yourself construction kits for sensor stations is a novel approach for citizen driven sensor networks. In this paper we present the development of SenseBox, a toolkit for open source sensor applications. We provide manuals and open source toolkits for hardware makers to establish a large scale sensor network in Germany, and additionally for schools to teach secondary school students programming in a playful and simple way based on open source microcontrollers. All collected data is open and being published on OpenSenseMap, our platform for open sensor data. After a test phase where we equipped citizens with construction kits for continuous …

Development Of Data Archiving And Distribution System For The Philippines' Lidar Program Using Object Storage Systems, Ken Abryl Eleazar Salanio, Carlo Santos, Ruby Magturo, Gene Paul Quevedo, Kenan Virtucio, Kenneth Langga, Mark Edwin Tupas, Enrico Paringit

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

The Philippines' Department of Science and Technology in collaboration with Higher Education Institutions, lead by the University of the Philippines, has embarked on a program for producing hazard maps on most major river systems in the Philippines. Realising the utility of LiDAR and its derived data sets, a concurrent program on resource assessment was also initiated, aimed to produce essential products that can be used in urban planning, resource planning, and other purposes these geospatial data might be able to provide. As a result, both programs produce immensely sizable datasets due for storage and distribution. Compiling them as one large …

The Development Of Web3d-Based Open-Pit Mine Monitoring System, Se-Yul Kim, Dong-Gook Lee, Jung-Bin Lee, Byung-Jin Jang, Ji-Ho You, Hyun-Jik, Lee

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

Large-scale open-pit mines are critical infrastructure for acquiring natural resources. However, this type of mine can experience environmental and safety problems during operations and thus requires continuous monitoring. In this study, a web three-dimensional(3D)-based monitoring system is constructed using geospatial information open platform and open-source geospatial information software which targets open-pit mines in Gangwon-do, Korea. The purpose is to develop a monitoring system of open-pit mines that enables any person to monitor the topographic and environmental changes caused by mine operations and to develop and restore the area’s ecology. Open-pit mines were classified into active or inactive mines and monitoring …

The Integration Of Heterogeneous Open Source Software To Develop An Urban Simulation Model, Donghan Kim

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

Recent development of open source geospatial software offers new opportunities for the spatial analysis and urban modeling fields. The use of open source software enables analysts and modelers to build dedicated and advanced models through computer programing. However, many open source geospatial software usually provides building blocks for the static data management, analysis, and visualisation. Hence, development of dynamic simulation model with open source geospatial software is not yet fully fledged. The goals of this study are twofold. Firstly, it aims to develop a dynamic urban growth simulation model by using and integrating heterogeneous open source software. Secondly, by doing …

Performance Analysis Of Mongodb Vs. Postgis/Postgresql Databases For Line Intersection And Point Containment Spatial Queries, Sarthak Agarwal, Ks Rajan

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

Relational databases have been around for a long time and Spatial databases have exploited this feature for close to two decades. The recent past has seen the development of NoSQL non-relational databases, which are now being adopted for spatial object storage and handling too. And this is gaining ground in the context of increased shift towards GeoSpatial Web Services on both the Web and mobile platforms especially in the usercentric services, where there is a need to improve the query response time. While SQL databases face scalability and agility challenges and fail to take the advantage of the cheap memory …

Generating Geospatial Footprints For Geoparsed Text From Crowdsourced Platial Data, Ahmad O. Aburizaiza, Matthew T. Rice, Michael F. Goodchild

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

The research paper reports on the generation of geospatial footprints from geoparsed text associated with geocrowdsourced platial data collected and stored in the George Mason University Geocrowdsourcing Testbed (GMU-GcT). The GMU-GcT facilitates study of social dynamics, quality assessment, data contribution patterns, and position validation for geocrowdsourced geo data, with a primary purpose of mapping transient obstacles and navigation hazards in a dynamic urban environment. This paper reports on the automated generation of spatial footprints using open-source software, and discusses the role of automated spatial footprints in quality assessment for automated position validation. A detailed, local gazetteer is used to store …

Dynamic Styling For Thematic Mapping, Simon Moncrieff, Elizabeth-Kate Gulland

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

Current web standards have facilitated the online production and publication of thematic maps as a useful aid to interpretation of spatial data and decision making. Patterns within the raw data can be highlighted with careful styling choices, which can be defined for online maps using tools such as Styled Layer Descriptor (SLD) XML schema. Dynamic generation of maps and map styles extends their use beyond static publication and into exploration of data which may require multiple styles and visualisations for the same set of data. This paper explores the application of thematic styling options to online data, including mapping services …

Flood Hazard Mapping Of Lower Indus Basin Using Multi-Criteria Analysis, Saba Zehra, Sheeba Afsar

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

The Super Flood, which hit Sindh in 2010, has turned out to be a wakeup call and has underlined the overwhelming challenge of natural calamities, as 2010 flood and the preceding flood in 2011 caused a huge loss to life, property and land use. These floods resulted in disruption of power, telecommunication, and water utilities in many districts of Pakistan, including 22 districts of Sindh (Memon, 2012). These floods call for risk assessment and hazard mapping of Lower Indus Basin flowing in the Sindh Province as such areas were also inundated in 2010 flood, which were not flooded in the …

Advances In Civic Co-Management Within The Geospatial Ecosystem Applied To Disaster Risk Management, Tomas Holderness, Etienne Turpin, Rohan Wickramasuriya, Matthew Berryman

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

The use of mobile devices for identifying risk and coordinating disaster response is well accepted and has been proven as a critical element in disaster risk management. As new tools, applications, and software are adopted by municipal governments and NGOs for the identification and management of urban risk, the need for greater integration of the various data they collect becomes acute. While the challenge of integrated data management is substantial, it is aided by the fact that many new tools have been developed to include an Application Programming Interface (API), which allows the machine-to-machine (i.e. automated) sharing of open data. …

An Open-Source Webgis Platform For Rapid Disaster Impact Assessment, Roya Olyazadeh, Zar Chi Aye, Michel Jaboyedoff, Marc-Henri Derron

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

Natural disaster impacts have increased worldwide in the past decades. Earthquake is one of the disasters that have been studied for real-time analysis and crisis management. Disaster-related losses have been examined by the damage extent of the houses, infrastructures, fatalities and injuries converted to financial losses. WebGIS technologies provide a wide range of solutions to map those damages, analyse data and publish the results. Open-Source tools and data have been widely used today because they stay free and facilitate access to data especially significant in developing countries. This research presents a WebGIS prototype using Open-Source Geo-Spatial technologies such as PostGIS, …

Landmark Based Path Planning And Linear Path Generation For Mobile Map Applications, Thejaka Mahaulpatha, Pasindu Chandrasekara, Dananjaya Thathsara, Irendra Koswatta, Nimalika Fernando

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

Landmarks are yet to be integrated with mainstream mobile phone based navigation aids. In geographical regions where land marks are commonly used by the community for navigation support, the lack of them in electronic navigation aids make them less useful for such communities. In this study a land marks based navigation model is derived considering the value of them for local community in Sri Lanka. The landmarks can be prominent or not, make sense only during certain time of the day or been important differently for people with different age groups. We assume that the attributes of landmarks can be …

Evaluation Of An Open-Source Collaborative Webgis Prototype In Risk Management With Students, Zar Chi Aye, Marie Charrière, Roya Olyazadeh, Marc-Henri Derron, Michel Jaboyedoff

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

Over the past decades, advancements in web services and web-based geospatial technologies have led to increasing delivery, access and analysis of rich spatial information over the web. With the use of open access data and open-source technology, it has become possible to make better, transparent and informed decisions for policy and decision makers. Under the framework of the European Marie Curie CHANGES project, a prototype web-based collaborative decision support platform was developed for the evaluation and selection of risk management strategies, mainly targeting flood and landslide hazards. The design of the conceptual framework was based on the initial feedback and …

Opensensemap - A Citizen Science Platform For Publishing And Exploring Sensor Data As Open Data, Matthias Pfeil, Thomas Bartoschek, Jan Alexander Wirwahn

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

A plethora of citizen science sensor platforms for dierent use-cases already exist. They provide cheap, precongured, plug and playable hardware and software solutions. Using data from multiple platforms and resources can be a challenging task in respect of discovering, exploring, downloading and converting. This work aims to implement a one-stop-shop for sensor data that tries to tackle these problems. Therefore a basic data schema capable of metadata is established that allows publishing generic sensor platforms and sensor data. For exploration a web platform is implemented based on common web standards. This work describes the requirements, design and implementation of the …

Results Of And Evaluation Of Augmented Reality Mobile Development Frameworks For Addresses In Augmented Reality, Danie Jooste, Victoria Rautenbach, Serena Coetzee

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

Addresses displayed on dwellings and buildings play a key role in society. Amongst others, they are used for deliveries, in household surveys, to navigate, or to find friends. Sometimes, address signs are destroyed, displaced or illegible, for example, as a result of vandalism, disasters, or poor maintenance. In augmented reality, computer-generated information is superimposed onto a live view of the real world. When address signs are not available, displaying the address in augmented reality could be immensely useful. The research presented in this article is part of a larger research endeavour to investigate augmented reality for addressing. This article presents …

A Cross National Comparison On The Awareness Of Adopting Foss4g To Nsdi In Developing Countries, Junyoung Choi, Jaesung Ahn, Hyungtae Kim

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

In this study, we constructed an assessment framework that was consisted of 9 indicators about functional, economic and public value for FOSS4G adoption to NSDI and alternatives such as data sharing, data management, utilization and construction and derived relative weights using AHP method. For the AHP, we conducted a survey to developing countries’ 10 respondents from 9 Asian and Latin American countries. Firstly, result of the survey showed that economic value indicator came in the highest weight with 0.425, followed by functional value indicator with 0.345 and public value indicator with 0.230. Secondly, result of the alternatives analysis showed that …

Analysing The Performance Of Nosql Vs Sql Databases With Respect To Routing Algorithms, Sarthak Agarwal, Ks Rajan

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

With the increased shift towards GeoSpatial Web Services on both the Web and mobile platforms especially in the usercentric services, there is a need to improve the query response time. The traditional routing algorithm requires server to process the query and send the results to a client but here we are focussing on query processing within the client itself. This paper attempts to evaluate the performance of an existing NoSQL database and SQL database with respect to routing algorithm and evaluate whether or not we can deploy the computations on the client system only. While SQL databases face the challenges …

Modifications To Web Processing Service Standard For Client-Side Geoprocessing, Evgeny Panidi, Eduard Kazakov, Anton Terekhov, Evgeny Kapralov

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

Nowadays we see the rapid growth of solutions number for geospatial data processing in the Web (i.e. geoprocessing). One of the main trends of Web geotechnologies evolution is the transition from Web map applications to the Web GIS applications, which are supplement the maps delivery with the analytic tools providing to the end user through Web interface. In fact, the only general open standard describes implementation rules for Web geoprocessing services. This is the Open Geospatial Consortium Web Processing Service standard, which is fully server-oriented. Moreover, the vast majority of currently used solutions (both open source and proprietary) are server-oriented, …

An Evaluation Of Open Source Geographic Information Systems Routing Tools In Vaccine Delivery In Kano State, Northern Nigeria, Kehinde A. Adewara

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

The recent proliferation of online/desktop/mobile open source geographic information systems (GIS)routing tools such as qgis road graph plugin (QRG), open street routing machine (OSRM), google maps engine (GME), graphhopper (GH), and Osm And has led to the need to provide a method for comparatively evaluating the strength and weakness of these routing tools. This is crucial in view of its implication on the prospect and otherwise of routing related projects such as supply chain logistics, supply/delivery operations, and emergency services, among others. In this paper, comparative evaluation of these tools has been carried out using drive test survey and desktop …

3d Visualization Of City Gml Building Data On World Wind, Vishal Tiwari, Ks Rajan

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

Large area cityGML visualization currently deals with its conversion to another model such as VRML, X3D or KML data format which can be visualized using various visualization tools like Google Earth, VTP, Cesium, NASAs World Wind, etc. But these conversion to VRML or X3D, leads to a loss of the geographical information, geometries, which restricts the aspect of geospatial analysis, in addition to adding an extra preprocessing step. One of the tool that supports 3D visualization of cityGML data is Aristoteles developed by the Institute for Cartography and Geoinformation. But it lacks features like move around camera controls, projecting the …

Geo-Based Image Analysis Service In Open Source Cloud Computing Environment, Sanggoo Kang, Guseon Yoon, Kiwon Lee

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

Globally, cloud computing is one of huge trends in ICT communities, exerting its influence on the most information application fields including geo-spatial domain. In general, cloud computing services are being regarded as commercial or public internet data center or infrastructure of computing resources. However, there is no limitation for applications of cloud computing. Especially, it is on the early developing stage in geo-based applications. This project is to present a practical application for geo-based image processing and analysis on open source cloud environment. OpenStack Juno version was applied for open source cloud computing environment. On this cloud environment, PostgreSQL and …

Semi-Automated Building Footprint Extraction, Delineation And 3d Visualisation Of The University Of The Philippines Main Campus From Lidar Data Using Gis-Based Open Source Software, Jara Kaye Villanueva, Ma. Rosario Concepcion Ang, Loureal Camille Inocencio, Ma. Victoria Rejuso

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

The advent of three-dimensional building footprint extraction and visualization has recently been explored due to its applications in urban planning, transportation, environmental monitoring, and modelling. Through the use of LiDAR (Light Detection and Ranging) data products such as Digital Terrain Model (DTM) and Digital Surface Model (DSM), useful information such as elevation, size, and shape can be obtained from the processed point clouds. Different studies regarding building extraction procedures have been conducted and explored. Algorithms have also been developed using LiDAR and GIS-based software that assume a rectangular form of polygons as building structures. As such, this study discusses an …

Land Suitability Assessment For Cash Crops Using Geospatial Techniques, Albert B. Jubilo, Glenn D. Depra, Aurecel L. Alejandro

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

Land suitability assessment studies for cash crop production in certain areas provide opportunities and limitations to decision makers and farmers. The objective of this study was to assess the suitability of land for banana, corn and cacao cultivation and production in Davao Region, Philippines. The methodology adopted combines most aspects of climate, temperature, slope and soil type that affect crop suitability at large. Suitability maps of the region for cash crop cultivation were established by scanning and digitizing the soil maps using geospatial techniques. Bananas are best suited for Davao del Norte. Corn are good for Davao del Norte and …

A Study Of The Development And Distribution Of Open Geospatial Data In Japanese Local Governments, Toshikazu Seto, Yoshihide Sekimoto, Shu Higashi

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

Since the end of the last decade, the use of open data (secondary use and machine-readable formats) has emerged as a political and cultural movement for the realization of citizen participation. Open government, citizen participation, transparency in government affairs, and cooperation of public and private entities were established as goals by the Obama administration in the U.S. in 2009. In the “G8 Open Data Charter,” which was declared at the G8 Lough Erne Summit in June 2013, geospatial information data was recognized as an area of high value. In addition to open data policy, data flow is a necessity; for …

Neo-Geography And Geography Education In The Japanese Universities, Yuichiro Nishimura

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

The author would like to discuss the state of the geographic education and the neo-geographical practices in Japan. Most of the geography education in universities are still old-fashioned and aimed for educating professionals, the new type of mapping practices like neo-geography are dissociated from it (Dodge and Perkins, 2008) In recent years, such neo-geographical practices also became popular in Japanese society. People come to recognize the importance of geospatial data especially when they facing at the several heavy disaster situations in Japan. For example, Japanese registered users of OpenStreetMap are over 3,700 in September 2013 (http://wiki.openstreetmap.org/wiki/User:Techstrom/JapanData) and the users still …

Introduction To A New Geo-Referenced Street Level Content: 3d Geopano, Boram Yoon, Impyeong Lee

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

Geospatial mash-up is to produce a new worthy value by combining geo-referenced contents and different kinds of service. Despite of its high popularity in aerial view contents such as Google Earth, it is hardly achieved especially in street level due to the poor georeferencing quality of the underlining street level contents. In this study we propose a new street-level georeferenced panorama image content, ‘3D GeoPano’. While the most existing contents provide only the location and orientation for each entire image not for each pixel, this new content is accurately georeferenced pixel by pixel so that one can derive 3D absolute …

Distributed Agents For Contextual Online Searches, Elizabeth-Kate Gulland, Simon Moncrieff, Geoff West

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

As semantic web use and research blossoms, automated online searches - whether to answer a simple question, seek specific sensor readings, or investigate research in a particular domain - has raised a number of issues. Simple search tools cannot handle context-specific search problems, but specialist search tools have a narrow domain and applicability. Some online tools circumvent these problems by putting more filter controls into the hands of users, but this leads to more complex interfaces which can raise usability barriers. A distributed approach, where specialised search agents act autonomously to find contextualised information, can provide a useful compromise between …