Vyron Antoniou

Vyron Antoniou
Hellenic Military Geographical Service · Cartography Branch

PhD

About

61
Publications
25,558
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1,628
Citations
Additional affiliations
September 2007 - June 2011
University College London
Position
  • PhD

Publications

Publications (61)
Chapter
Full-text available
Interest in the formal representation of citizen science comes from portals, platforms, and catalogues of citizen science projects; scientists using citizen science data for their research; and funding agencies and governments interested in the impact of citizen science initiatives. Having a common understanding and representation of citizen scienc...
Chapter
Full-text available
In this chapter, we highlight the added value of mobile and web apps to the field of citizen science. We provide an overview of app types and their functionalities to facilitate appropriate app selection for citizen science projects. We identify different app types according to methodology, data specifics, and data collection format. The chapter ou...
Article
Full-text available
The ever-growing availability of Earth Observation (EO) data is demonstrating a wide range of potential applications in the realm of land management. On the other hand, large volumes of data need to be handled and analysed to extract meaningful information and Geomatics coupled with new approaches such as Artificial Intelligence (AI) and Machine Le...
Article
Citizen Science (CS) projects involve members of the general public as active participants in research. While some advocates hope that CS can increase scientific knowledge production (“productivity view”), others emphasize that it may bridge a perceived gap between science and the broader society (“democratization view”). We discuss how an integrat...
Article
Full-text available
Citizen Science (CS) projects involve members of the general public as active participants in research. While some advocates hope that CS can increase scientific knowledge production (“productivity view”), others emphasize that it may bridge a perceived gap between science and the broader society (“democratization view”). We discuss how an integrat...
Article
Full-text available
This paper presents an end-to-end methodology that can be used in the disaster response process. The core element of the proposed method is a deep learning process which enables a helicopter landing site analysis through the identification of soccer fields. The method trains a deep learning autoencoder with the help of volunteered geographic inform...
Article
Full-text available
More than 10 years have now passed since Mike Goodchild wrote his seminal paper on ‘Citizens as Sensors’ (2007). Since then, volunteered geographic information (VGI) has become an ever more popular research topic within the spatial sciences. Much of the VGI research in the past has focused on OpenStreetMap (OSM), which is, undoubtedly, the most suc...
Chapter
OpenStreetMap (OSM) is a bottom up community-driven initiative to create a global map of the world. Yet the application of OSM to land use and land cover (LULC) mapping is still largely unexploited due to problems with inconsistencies in the data and harmonization of LULC nomenclatures with OSM. This chapter outlines an automated methodology for cr...
Article
Full-text available
This paper examines the feasibility of using data from OpenStreetMap (OSM), Facebook and Foursquare as a source of information on the function of buildings. Such information is rarely openly available and if available, would vary between cities by nomenclature, making comparisons between places difficult. Volunteered Geographic Information (VGI) in...
Article
Full-text available
big leap in the agricultural sector is expected thanks to the operational deployment of Copernicus data and services, the new Earth Observation program of the European Commission. The huge quantity of data delivered freely along with the good level of resolution (spatial, temporal and spectral) will open up new opportunities for achieving the well-...
Article
Crowdsourcing geographic information in government is focusing on projects that are engaging people who are not government officials and employees in collecting, editing and sharing information with governmental bodies. This type of projects emerged in the past decade, due to technological and societal changes - such as the increased use of smartph...
Chapter
This chapter studies the spatial behavior of contributors to OpenStreetMap and links it to gamification mechanisms which provide a solution to issues that arise with patterns of participation. More specifically, three issues are identified: (1) high productive contributors show little commitment to return and update geographic features they created...
Chapter
Full-text available
Volunteered geographic information (VGI) eloquently sums a wide variety of activities that generate geospatial content. While this content has taken many forms this chapter focuses on data sets that are used in the context of geographical citizen science projects. Citizen science covers a wide range of activities which in essence empowers communiti...
Book
Full-text available
This new Handbook unites cartographic theory and praxis with the principles of cartographic design and their application. It offers a critical appraisal of the current state of the art, science, and technology of map-making in a convenient and well-illustrated guide that will appeal to an international and multi-disciplinary audience. No single-vol...
Chapter
This chapter introduce the concept of Volunteered Geographic Information (VGI) within practices of mapping and cartography. Our aim is to provide an accessible overview of the area, which has grown rapidly in the past decade, but first we define what we mean by VGI.
Chapter
Full-text available
Uncertainty over the data quality of Volunteered Geographic Information (VGI) is the largest barrier to the use of this data source by National Mapping Agencies (NMAs) and other government bodies. A considerable body of literature exists that has examined the quality of VGI as well as proposed methods for quality assessment. The purpose of this cha...
Chapter
Full-text available
The flourishing of VGI projects has transformed the average web user into an eager geographic data user and contributor. As it is difficult for the crowd to perceive VGI quality, visualisation can play a critical role in communicating data quality. At the same time, although VGI quality has been a prominent research topic for scientists, quality vi...
Chapter
Full-text available
Volunteered Geographic Information (VGI) has become a rich and well established source of geospatial data. From the popular OpenStreetMap (OSM) to many citizen science projects and social network platforms, the amount of geographically referenced information that is constantly being generated by citizens is burgeoning. The main issue that continues...
Chapter
Full-text available
Despite the considerable growth in Volunteered Geographic Information (VGI) activities in citizen sensing and the evident opportunities for VGI use in map revision and updating, few European National Mapping Agencies (NMAs) or other types of government bodies have engaged significantly with VGI. Moreover , the level of engagement of NMAs with the V...
Chapter
Full-text available
In this final chapter, we speculate on future developments in the field of Volunteered Geographic Information (VGI); we focus on how VGI will be affected by future technological developments, but we also consider issues such as VGI 378 Mapping and the Citizen Sensor quality, the relationship of VGI with science and citizens, and the impact of VGI i...
Chapter
Full-text available
The role of citizens in mapping has evolved considerably over the last decade. This chapter outlines the background to citizen sensing in mapping and sets the scene for the chapters that follow, which highlight some of the main outcomes of a collaborative programme of work to enhance the role of citizens in mapping.
Chapter
Full-text available
The most common way to use geographic information is to make maps. With the ever growing amount of Volunteered Geographic Information (VGI), we have the opportunity to make many maps, but only automatic cartography (generalisation, stylisation, text placement) can handle such an amount of data with very frequent updates. This chapter reviews the re...
Article
Full-text available
Volunteered Geographic Information (VGI) is a growing area of research. This Special Issue aims to capture the main trends in VGI research based on 16 original papers, and distinguishes between two main areas, i.e., those that deal with the characteristics of VGI and those focused on applications of VGI. The topic of quality assessment and assuranc...
Article
Full-text available
With the opening up of the Landsat archive, global high resolution land cover maps have begun to appear. However, they often have only a small number of high level land cover classes and they are static products, corresponding to a particular period of time, e.g., the GlobeLand30 (GL30) map for 2010. The OpenStreetMap (OSM), in contrast, consists o...
Article
Full-text available
With the development of location-aware devices and the success and high use of Web 2.0 techniques, citizens are able to act as sensors by contributing geographic information. In this context, data quality is an important aspect that should be taken into account when using this source of data for different purposes. The goal of the paper is to analy...
Chapter
OpenStreetMap (OSM) is a bottom up community-driven initiative to create a global map of the world. Yet the application of OSM to land use and land cover (LULC) mapping is still largely unexploited due to problems with inconsistencies in the data and harmonization of LULC nomenclatures with OSM. This chapter outlines an automated methodology for cr...
Article
Full-text available
A protocol for the collection of vector data in Volunteered Geographic Information (VGI) projects is proposed. VGI is a source of crowdsourced geographic data and information which is comparable, and in some cases better, than equivalent data from National Mapping Agencies (NMAs) and Commercial Surveying Companies (CSC). However, there are many dif...
Conference Paper
Full-text available
Η εντυπωσιακή ανάπτυξη των Εθελοντικών Γεωγραφικών Δεδομένων (ΕΓΔ) μετέτρεψε το μέσο χρήστη του διαδικτύου σε ένα δυναμικό δημιουργό και χρήστη γεωγραφικών δεδομένων. Καθώς ο απλός χρήστης δύσκολα κατανοεί το θέμα της ποιότητας των ΕΓΔ, η χαρτογραφική απόδοση της ποιότητας μπορεί να παίξει ένα σημαντικό ρόλο. Παράλληλα, ενώ η ποιότητα των ΕΓΔ αποτε...
Conference Paper
Full-text available
Ένα μεγάλο μέρος των χαρτών που συντάσσονται σήμερα προορίζονται για δημοσιοποίηση στο διαδίκτυο. Η αλλαγή αυτή, σε σχέση με τον παραδοσιακό στόχο που ήταν ο έντυπος χάρτης, επηρεάζει τη διαδικασία σχεδιασμού σε πρακτικό επίπεδο π.χ. νέες τεχνολογίες, λογισμικό και προγραμματιστικές τεχνικές. Η ανάγκη της χαρτογραφικής σύνθεσης να προσαρμοστεί στις...
Book
Full-text available
This book focuses on the study of the remarkable new source of geographic information that has become available in the form of usergenerated content accessible over the Internet through mobile and Web applications. The exploitation, integration and application of these sources, termed volunteered geographic information (VGI) or crowdsourced geograp...
Chapter
Full-text available
The paper presents empirical research on the quality of the toponyms that can be retrieved from OpenStreetMap (OSM) under the purpose of enriching authoritative toponymic databases and gazetteers. An analysis on the volatility of places and points-of-interest (POIs) is presented. We examine how named features behave and change in terms of type, nam...
Conference Paper
Full-text available
The appearance of OpenStreetMap (OSM) in 2004 sparked a phenomenon known as Volunteered Geographic Information (VGI). Today, VGI comes in many flavours (e.g. toponyms, GPS tracks, geo-tagged photos, micro-blogging or complete topographic maps) and from various sources. One subject that has attracted research interest from the early days of VGI is h...
Conference Paper
Full-text available
Land Use/Land Cover Maps (LULCM), fundamental for many areas of application, are usually generated through the classification of satellite imagery. However, their creation is time consuming and therefore updated LULCM are seldom available. The OpenStreetMap (OSM) collaborative project collects a rich set of vector data provided by volunteers at a g...
Article
Full-text available
Geo-tagged photographs are used increasingly as a source of Volunteered Geographic Information (VGI), which could potentially be used for land use and land cover applications. The purpose of this paper is to analyze the feasibility of using this source of spatial information for three use cases related to land cover: Calibration, validation and ver...
Research
Full-text available
The article explores the world of Volunteered Geographic Information from birth until today, observing the actors, the sources and the problems inherent the data quality according to ISO standards. The author underline the potential of this social phenomenon in constant evolution and the impact this could have, in the very near future, in the vario...
Conference Paper
Full-text available
The evaluation of VGI quality has been a very interesting and popular issue amongst academics and researchers. Various metrics and indicators have been proposed for evaluating VGI quality elements. Various efforts have focused on the use of well-established methodologies for the evaluation of VGI quality elements against authoritative data. In this...
Conference Paper
Full-text available
The evaluation of VGI quality has been a very interesting and popular issue amongst academics and researchers. Various metrics and indicators have been proposed for evaluating VGI quality elements. Various efforts have focused on the use of well-established methodologies for the evaluation of VGI quality elements against authoritative data. In this...
Technical Report
Full-text available
This report is based on a six-month study of the use of volunteered geographic information (VGI) by government. It focuses on government use of information relating to a location, which was produced through what is known as “crowdsourcing”, the process of obtaining information from many contributors amongst the general public, regardless of their b...
Article
Full-text available
This report is based on a six-month study of the use of volunteered geographic information (VGI) by government. It focuses on government use of information relating to a location, which was produced through what is known as “crowdsourcing”, the process of obtaining information from many contributors amongst the general public, regardless of their b...
Conference Paper
Full-text available
This article studies the spatial behavior of contributors to OpenStreetMap and links it to gamification mechanisms which provide a solution to issues that arise with patterns of participation. More specifically, three issues are identified: (1) high productive contributors show little commitment to return and update geographic features they created...
Thesis
Full-text available
Since the World Wide Web (Web) became a medium to serve information, its impact on geographic information has been constantly growing. Today the evolution of the bi-directional Web 2.0 has created the phenomenon of User Generated Spatial Content. In this Thesis the focus is into analysing different aspects of this phenomenon from the perspective of...
Article
Full-text available
In the area of Volunteered Geographical Information (VGI), the issue of spatial data quality is a clear challenge. The data that is contributed to VGI projects does not comply with standard spatial data quality assurance procedures, and the contributors operate without central coordination and strict data collection frameworks. However, similar to...
Article
Full-text available
Among popular Web 2.0 applications are the social networking, photo-sharing websites like Flickr, Panoramio, Picasa Web, and Geograph. The phenomenon of user-generated content and the increased presence of geographic information in such applications have motivated researchers to consider them as a source of geographic information. In this paper we...
Conference Paper
Full-text available
Transmitting vector data over the Web is a challenging issue. Existing methods for vector delivery over the Web focus on progressive transmission techniques. Long standing problems in the formalization of dynamic generalization and the time needed for complex algorithms does not allow their implementation in real life applications. We propose a new...
Conference Paper
Full-text available
Η χαρτογραφία μέσω δικτύων, αποτελεί το υποχρεωτικό σημείο διαβάσεως της επι- στήμης της Χαρτογραφίας από την κατάσταση του παραδοσιακού χάρτη προς μια κοινω- νία στην οποία η γεωγραφική πληροφορία θα είναι προσβάσιμη από τον τελικό χρήστη ανεξαρτήτως χώρου και χρόνου. Θέτοντας τον παραπάνω στόχο και συνυπολογίζοντας το σημαντικό παράγοντα της διαλ...
Article
The evolution of open standards and especially those pertaining to the family of XML technologies, have a considerable impact on the way the Geomatics community addresses the acquisition, storage, analysis and display of spatial data. The most recent version of the GML specification enables the merging of vector and raster data into a single “open”...
Conference Paper
Full-text available
SUMMARY The role of XML technologies in GIS and Cartography becomes more and more critical offering great advantages in web-based applications. The objective of this study is to elaborate on the utilization of the XML specifications used in modern web cartographic applications. Emphasis is given to GML, XSL and SVG standards that constitute the maj...

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Project
Dear Colleagues, Land subsidence is representing an ongoing problem affecting millions of people worldwide. Losing surface elevation can lead to structural damage to infrastructure and buildings, natural areas, or agricultural loss. Further, the rising of salt wedges and the regression of coastlines can also cause a negative impact on climate change (sea level rise), especially in low-lying coastal areas. Landslides are natural hazards with a worldwide impact. Extreme natural events such as heavy rainfalls, earthquakes, volcanic eruptions, and combined factors lead to landslides, the frequency of which also increases due to humanmade activities, such as deforestation and land exploitation leading. Management of these natural and human-made disasters can benefit from timely and high-quality information resulting from space-borne observations in response to emergency conditions. Concentrating on developing the necessary products, tools, and methods, notably reference maps, may help in taking precautions and recovery (i.e., mitigation, preparedness, crisis, and recovery). Landslides and land subsidence data processing and analysis using different methods approaches, and techniques may improve the precision of further risk assessment and mitigation planning. Radar and optical remote sensing along with GIS data are frequently used for supporting landslide risk management and monitoring due to their multispectral and textural characteristics, wide area coverage, and high spatial resolution. Satellite remote sensing data are very effective in supporting landslide and land subsidence mapping for the prevention and disaster risk reduction phase and emergency response phase. Therefore, this Special Issue invites article submissions on a wide variety of remote sensing and GIS along with data analytics and techniques implemented for monitoring land subsidence and landslides. Original and high-quality research and review papers by both stakeholders and researchers around the world using Remote Sensing and GIS-based innovative techniques will be accepted, focusing on topics such as: Subsidence Landslides land subsidence and landslide mitigation land subsidence and landslide recovery land subsidence and landslide impact land subsidence and landslide modeling Case studies
Project
A cartographic eye on web mapping