Thomas Jekel – Adrijana Car – Josef Strobl – Gerald Griesebner (Eds.)


GI_Forum 2013, Volume 1

Creating the GISociety – Conference Proceedings


ISSN 2308-1708
Online Edition
ISBN 978-3-87907-532-4
Print Edition
ISBN 978-3-7001-7438-7
Online Edition
doi:10.1553/giscience2013
GI_Forum, Volume 1 
2013,  566 pages
Print edition is available at Wichmann-Verlag, Berlin
Open access


GIS as a technology has come a long way, from the early adoption of technical wizardry to the ubiquitous, if unconscious use by the masses. The creation of the GISociety is on its way through technological development, theoretical and empirical scientific research and inclusion of technology into education with increasing pedagogical justification. Defining new dimensions of hard- and software, brainware and orgware are all needed to further develop the GISociety.

The Geoinformatics Forum (www.gi-forum.org) held in Salzburg from July 2-5, 2013, links into these research areas. We are pleased to present work by researchers who actively contribute to the creation of the GISociety in theoretical, technical, and educational terms. This reflects that a GISociety can only be created though close interaction among the domains of science, technology and education. Topics of the 2013 proceedings therefore include:
• Advances in Geographic Information Science
and Geographic Information Technology
• Spatial Citizenship
• Education for Digital Earth
• Ecosystem and Biodiversity Monitoring: Best Practice in Europe and Globally (EO4Hab)

The book is aimed at researchers and practioners in the field geoinformation with an academic, industrial or educational background.

Work on this publication has been co-funded by the following projects and networks funded by the European commission:
LLP-Comenius multilateral project SPACIT (517908-LLP-2011-1-AT-COMENIUS-CMP)
LLP-Comenius network digital-earth.eu (510010-LLP-1-2010-1-AT -COMENIUS-CNW)
FP7-SPACE project MS.MONINA (FP7-SPA-2010-1-263479)
FP7-SPACE project BIO_SOS (FP7-SPA-2010-1-263435)

Verlag der Österreichischen Akademie der Wissenschaften
Austrian Academy of Sciences Press
A-1011 Wien, Dr. Ignaz Seipel-Platz 2
Tel. +43-1-515 81/DW 3402-3406, Fax +43-1-515 81/DW 3400
https://verlag.oeaw.ac.at, e-mail: verlag@oeaw.ac.at

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GI_Forum 2013, Volume 1

ISSN 2308-1708
Online Edition
ISBN 978-3-87907-532-4
Print Edition
ISBN 978-3-7001-7438-7
Online Edition



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Thema: geography
Thomas Jekel – Adrijana Car – Josef Strobl – Gerald Griesebner (Eds.)


GI_Forum 2013, Volume 1

Creating the GISociety – Conference Proceedings


ISSN 2308-1708
Online Edition
ISBN 978-3-87907-532-4
Print Edition
ISBN 978-3-7001-7438-7
Online Edition
doi:10.1553/giscience2013
GI_Forum, Volume 1 
2013,  566 pages
Print edition is available at Wichmann-Verlag, Berlin
Open access

Josef Hecher, Anthony Filippi, Inci Guneralp, Gernot Paulus
S.  187 - 196
doi:10.1553/giscience2013s187

Open access
Abstract:
Automatic feature extraction from satellite imagery is cost effective and fast. An essential issue in this context is the degree of accuracy for thematic correctness obtainable through common pixel-based and object-oriented classification algorithms. By applying two classification algorithms to Landsat 5 TM imagery for the extraction of different morphological river features the thematic correctness of the resulting raster images and the separability of the river features is evaluated. River features of meandering rivers evolve through dynamic avulsion, erosion and deposition processes. Although many studies focus on the analysis of these river environments, diverse methods of GIS and remote sensing based river feature classification methods have not been evaluated and assessed yet. In the literature several techniques to monitor spatio-temporal changes such as lateral river channel migration are already mentioned but the tendency there is to identify the changes by examining time spans rather than a point in time. Besides that the semiautomatic river feature methods described in related studies mainly focus on the identification of a river channel itself and do not consider additional features such as oxbows, scars, relic channels, etc. that in fact are significant characters in riverine environments. Therefore, this paper evaluates the application of a supervised classification using ENVI’s Support Vector Machine and an object based classification using the ArcGIS extension Feature Analyst to extract river features from Landsat 5 TM images including ancillary data files. Furthermore, the results of the classification methods are evaluated with regard to thematic correctness and separability of the various classified river features using accuracy assessment as presented in the specialist literature. Finally the long-time changes in the riverine environments are traced by interpreting the distribution of the classified river features. Accordingly, the approach of this work contributes to on-going research concerning semiautomatic or automatic river feature extraction.

Published Online:  2013/06/20 17:39:39
Object Identifier:  0xc1aa5576 0x002e6e60

GIS as a technology has come a long way, from the early adoption of technical wizardry to the ubiquitous, if unconscious use by the masses. The creation of the GISociety is on its way through technological development, theoretical and empirical scientific research and inclusion of technology into education with increasing pedagogical justification. Defining new dimensions of hard- and software, brainware and orgware are all needed to further develop the GISociety.

The Geoinformatics Forum (www.gi-forum.org) held in Salzburg from July 2-5, 2013, links into these research areas. We are pleased to present work by researchers who actively contribute to the creation of the GISociety in theoretical, technical, and educational terms. This reflects that a GISociety can only be created though close interaction among the domains of science, technology and education. Topics of the 2013 proceedings therefore include:
• Advances in Geographic Information Science
and Geographic Information Technology
• Spatial Citizenship
• Education for Digital Earth
• Ecosystem and Biodiversity Monitoring: Best Practice in Europe and Globally (EO4Hab)

The book is aimed at researchers and practioners in the field geoinformation with an academic, industrial or educational background.

Work on this publication has been co-funded by the following projects and networks funded by the European commission:
LLP-Comenius multilateral project SPACIT (517908-LLP-2011-1-AT-COMENIUS-CMP)
LLP-Comenius network digital-earth.eu (510010-LLP-1-2010-1-AT -COMENIUS-CNW)
FP7-SPACE project MS.MONINA (FP7-SPA-2010-1-263479)
FP7-SPACE project BIO_SOS (FP7-SPA-2010-1-263435)



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Verlag der Österreichischen Akademie der Wissenschaften
Austrian Academy of Sciences Press
A-1011 Wien, Dr. Ignaz Seipel-Platz 2
Tel. +43-1-515 81/DW 3402-3406, Fax +43-1-515 81/DW 3400
https://verlag.oeaw.ac.at, e-mail: verlag@oeaw.ac.at