• Robert Vogler – Adrijana Car – Josef Strobl – Gerald Griesebner (Eds.)

GI_Forum 2014, Volume 2

Geospatial Innovation for Society – Conference Proceedings

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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 emergence of a 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 enhance the GISociety with new geospatial innovations.

This issue of the Geoinformatics Forum (www.gi-forum.org) links into these research areas. We are pleased to present work by researchers who actively contribute to the rising of geospatial innovations for society in theoretical, empirical, technical, and educational terms. This reflects that innovative alterations can only be created though close interaction among the domains of science, technology and education. Topics of the 2014 issue therefore include:
• Innovations in geospatial technologies
• Advances in GIScience
• Monitoring global change
• Geoinformation for public health
• Education with digital earth
• Spatial Citizenship education
• Geospatial learning environments

The book is aimed at researchers and practioners in the field of 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)
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 3420, Fax +43-1-515 81/DW 3400
https://verlag.oeaw.ac.at, e-mail: verlag@oeaw.ac.at

Bestellung/Order


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GI_Forum 2014, Volume 2

ISSN 2308-1708
Online Edition
ISBN 978-3-87907-545-4
Print Edition
ISBN 978-3-7001-7652-7
Online Edition



Send or fax to your local bookseller or to:

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 3420, Fax +43-1-515 81/DW 3400
https://verlag.oeaw.ac.at, e-mail: bestellung.verlag@oeaw.ac.at
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Estimating Impervious Surface Distribution: A Comparison of Object Based Analysis and Spectral Mixture Analysis

    Chunzhu Wei, Thomas Blaschke

GI_Forum 2014, Volume 2, pp. 25-29, 2014/06/18

Geospatial Innovation for Society – Conference Proceedings

doi: 10.1553/giscience2014s25


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doi:10.1553/giscience2014s25


Abstract

Knowledge about the distribution of impervious surface is important to the understanding of urbanization processes and environmental consequences. This paper compares two methods for classifying the degree of imperviousness for the large metropolitan region of the fast growing city of Guangzhou in southern China: spectral mixture analysis (SMA) and object based image analysis (OBIA). Both methods were applied to data from the Chinese Satellite Huan Jing 1-B (HJ-1B). Samples were classified using a Support Vector Machine (SVM), ultimately yielding the percentages of Impervious Surface Areas (ISA). The estimation accuracy for ISA was assessed using the land surface temperature retrieval result based on HJ-1B satellite data. In general, OBIA achieved slightly better results, while both methods achieved low accuracies in the highly vegetated northern and eastern parts of the study area. Our results show that OBIA combined with SVM classification of the HJ-1B data provides a means to map and quantify the degree of impervious surface distribution.

Published Online: 2014/06/18 09:59:29

Object Identifier: 0xc1aa5572 0x0030d3d7

Document viewed: Calculating...

Rights: https://creativecommons.org/licenses/by-nd/4.0/