Spatial data for slum upgrading: Volunteered Geographic Information and the role of citizen science

2018 ◽  
Vol 72 ◽  
pp. 18-26 ◽  
Author(s):  
Samyra Hachmann ◽  
Jamal Jokar Arsanjani ◽  
Eric Vaz
Keyword(s):  
Citizen Science ◽  
Spatial Data ◽  
Volunteered Geographic Information ◽  
Geographic Information ◽  
Slum Upgrading

scholarly journals THE ROLE OF VOLUNTEERED GEOGRAPHIC INFORMATION APPLICATIONS IN DISASTER MANAGEMENT

2018 ◽  
Vol XLII-3/W4 ◽  
pp. 469-473
Author(s):  
H. K. Sevinç ◽  
I. R. Karaş
Keyword(s):  
Crisis Management ◽  
Disaster Management ◽  
Spatial Data ◽  
Volunteered Geographic Information ◽  
Geographic Information ◽  
Crisis Resolution ◽  
Important Requirement ◽  
Conventional Methods ◽  
A Priority

<p><strong>Abstract.</strong> In times of crisis, it is a priority to get help as soon as possible and any kind of help can be accepted. Especially, all kinds of support by volunteers, is a great help in crisis resolution. Crisis locations can be developed or less developed regions. It is sometimes difficult to reach help and support in less developed regions. To create Geographic data, which is an important requirement in crisis situations, is time-consuming and costly when attempted to be produced by conventional methods. When the data is produced by volunteers, it is faster and less costly because experts try to reach and support the region. Volunteered Geographic Information (VGI) is spatial data that has been contributed for free by volunteers. In our work, that is review, the examples of Volunteered Geographic Information applications in crisis management will be shown on the poster.</p>

scholarly journals ASSESSMENT OF COMPLETENESS AND POSITIONAL ACCURACY OF LINEAR FEATURES IN VOLUNTEERED GEOGRAPHIC INFORMATION (VGI)

2015 ◽  
Vol XL-1-W5 ◽  
pp. 169-174
Author(s):  
M. Eshghi ◽  
A. A. Alesheikh
Keyword(s):  
Spatial Data ◽  
Volunteered Geographic Information ◽  
Geographic Information ◽  
Positional Accuracy ◽  
Linear Feature ◽  
Almost All ◽  
Information Collecting ◽  
Correct Data ◽  
Official Data

Recent advances in spatial data collection technologies and online services dramatically increase the contribution of ordinary people to produce, share, and use geographic information. Collecting spatial data as well as disseminating them on the internet by citizens has led to a huge source of spatial data termed as Volunteered Geographic Information (VGI) by Mike Goodchild. Although, VGI has produced previously unavailable data assets, and enriched existing ones. But its quality can be highly variable and challengeable. This presents several challenges to potential end users who are concerned about the validation and the quality assurance of the data which are collected. Almost, all the existing researches are based on how to find accurate VGI data from existing VGI data which consist of a) comparing the VGI data with the accurate official data, or b) in cases that there is no access to correct data; therefore, looking for an alternative way to determine the quality of VGI data is essential, and so forth. In this paper it has been attempt to develop a useful method to reach this goal. In this process, the positional accuracy of linear feature of Iran, Tehran OSM data have been analyzed.

scholarly journals DOCUMENTATION OF HERITAGE STRUCTURES THROUGH GEO-CROWDSOURCING AND WEB-MAPPING

2017 ◽  
Vol XLII-2/W7 ◽  
pp. 17-21 ◽  
Author(s):  
H. K. Dhonju ◽  
W. Xiao ◽  
B. Shakya ◽  
J. P. Mills ◽  
V. Sarhosis
Keyword(s):  
Coordinate System ◽  
Citizen Science ◽  
Mobile Phones ◽  
Volunteered Geographic Information ◽  
Geographic Information ◽  
Global Coordinate System ◽  
Web Mapping ◽  
Heritage Sites ◽  
Potential Applications ◽  
Platform Development

Heritage documentation has become increasingly urgent due to both natural impacts and human influences. The documentation of countless heritage sites around the globe is a massive project that requires significant amounts of financial and labour resources. With the concepts of volunteered geographic information (VGI) and citizen science, heritage data such as digital photographs can be collected through online crowd participation. Whilst photographs are not strictly geographic data, they can be geo-tagged by the participants. They can also be automatically geo-referenced into a global coordinate system if collected via mobile phones which are now ubiquitous. With the assistance of web-mapping, an online geo-crowdsourcing platform has been developed to collect and display heritage structure photographs. Details of platform development are presented in this paper. The prototype is demonstrated with several heritage examples. Potential applications and advancements are discussed.

scholarly journals The GeoWeb and everyday life: An analysis of spatial tactics and volunteered geographic information

First Monday ◽  
2014 ◽  
Author(s):  
Jessa Lingel ◽  
Bradley Wade Bishop
Keyword(s):  
Everyday Life ◽  
Spatial Data ◽  
Information Science ◽  
Volunteered Geographic Information ◽  
Political Efficacy ◽  
Geographic Information ◽  
Future Research ◽  
The Political ◽  
Geospatial Technologies ◽  
Opening Up

In this paper, we discuss GeoWeb technologies, specifically those created via volunteered geographic information (VGI) as a means of analyzing the political contours of mapmaking. Our paper is structured around two case studies of VGI projects that allow for consideration for the political efficacy (and potential drawbacks) of these geospatial technologies. We use de Certeau’s constructs of strategies and tactics as a conceptual framing, which allows for a political reading of geographic data couched in the context of everyday life, as well as opening up inquiry into the politics of making, accessing and interpreting spatial data. We conclude by suggesting provocations for future research on the GeoWeb and VGI at the intersection of geography and information science.

scholarly journals Remote Sensing and Geographic Information System in Water Erosion Assessment

2020 ◽  
Author(s):  
Nirmal Kumar ◽  
S. K. Singh ◽  
G. P. Obi Reddy ◽  
V. N. Mishra ◽  
R. K. Bajpai
Keyword(s):  
Remote Sensing ◽  
Information System ◽  
Geographic Information System ◽  
Spatial Data ◽  
Soil Loss ◽  
Water Erosion ◽  
Geographic Information ◽  
Geographical Information ◽  
Comprehensive Overview

The aim of this review paper is to provide a comprehensive overview of geographical information system and remote sensing–based water erosion assessment. With multispectral and multi-temporal low cost data at various resolutions, remote sensing plays an important role for mapping the distribution and severity of water erosion and for modeling the risk and/or potential of soil loss. The ability of geographic information system to integrate spatial data of different types and sources makes its role unavoidable in water erosion assessment. The role of satellite data in identification of eroded lands and in providing inputs for erosion modeling has been discussed. The role of GIS in mapping eroded lands based on experts’ opinion, in generating spatial data inputs from sources other than remote sensing and in integrating the inputs to model the potential soil loss has been discussed.

“Really Knowing” the Community: Citizen Science, VGI, and Community Housing Assessments

2020 ◽  
pp. 0739456X2097680
Author(s):  
Jerry Shannon ◽  
Kimberly Skobba ◽  
Jermaine Durham ◽  
Chase Polak
Keyword(s):  
Citizen Science ◽  
Volunteered Geographic Information ◽  
Geographic Information ◽  
Local Communities ◽  
Housing Conditions ◽  
Local Initiatives ◽  
Local Leaders ◽  
Science Initiative

This paper evaluates a citizen science initiative to assess housing conditions in multiple rural Georgia communities. Using technologies for digitized collection of volunteered geographic information (VGI) on property conditions and an online dashboard to analyze results, local housing teams identified the characteristics and prevalence of housing problems in their communities. Drawing from a pragmatist framework, we note how this process created new connections between local leaders and residents and brought attention to sometimes unexpected issues. Conversely, participation was uneven within local communities in ways that potentially limit the effectiveness of these local initiatives.

Utilizing Volunteered Information for Infectious Disease Surveillance

2013 ◽  
Vol 4 (2) ◽  
pp. 54-70 ◽  
Author(s):  
Shaun A. Langley ◽  
Joseph P. Messina ◽  
Sue C. Grady
Keyword(s):  
Data Collection ◽  
Spatial Data ◽  
Disease Surveillance ◽  
Geographic Information ◽  
Spatial Data Analysis ◽  
Tsetse Flies ◽  
New Paradigm ◽  
Traditional Role ◽  
The Public

With the advent of Web 2.0, the public is becoming increasingly interested in spatial data exploration. The potential for Volunteered Geographic Information (VGI) to be adopted for passive disease surveillance and mediated through an enhanced relationship between researchers and non-scientists is of special interest to the authors. In particular, mobile devices and wireless communication permit the public to be more involved in research to a greater degree. Furthermore, the accuracy of these devices is rapidly improving, allowing the authors to address questions of uncertainty and error in data collections. Cooperation between researchers and the public integrates themes common to VGI and PGIS (Participatory Geographic Information), to bring about a new paradigm in GIScience. This paper outlines the prototype for a VGI system that incorporates the traditional role of researchers in spatial data analysis and exploration and the willingness of the public, through traditional PGIS, to be engaged in data collection for the purpose of surveillance of tsetse flies, the primary vector of African Trypanosomiasis. This system allows for two-way communication between researchers and the public for data collection, analysis, and the ultimate dissemination of results. Enhancing the role of the public to participate in these types of projects can improve both the efficacy of disease surveillance as well as stimulating greater interest in science.

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