<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD Journal Publishing DTD v3.0 20080202//EN" "http://dtd.nlm.nih.gov/publishing/3.0/journalpublishing3.dtd">
<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" article-type="research-article" dtd-version="3.0" xml:lang="en">
<front>
<journal-meta>
<journal-id journal-id-type="publisher">ISPRS-Archives</journal-id>
<journal-title-group>
<journal-title>The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences</journal-title>
<abbrev-journal-title abbrev-type="publisher">ISPRS-Archives</abbrev-journal-title>
<abbrev-journal-title abbrev-type="nlm-ta">Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">2194-9034</issn>
<publisher><publisher-name>Copernicus Publications</publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/isprsarchives-XL-3-W3-595-2015</article-id>
<title-group>
<article-title>TOWARDS TIME-SERIES PROCESSING OF VHR SATELLITE IMAGES FOR SURFACE DEFORMATION DETECTON AND MEASUREMENTS</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Stumpf</surname>
<given-names>A.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Delacourt</surname>
<given-names>C.</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Malet</surname>
<given-names>J. P.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Institut de Physique du Globe de Strasbourg - CNRS UMR 7516, University of Strasbourg/EOST, 5 rue Descartes, 67084 Strasbourg, France</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Laboratoire Domaines Océaniques - CNRS UMR 6538, Institut Universitaire Européen de la Mer, University of Western Brittany, rue Dumont d&apos;Urville, 29280 Plouzané, France</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>Laboratoire Image, Ville, Environnement - CNRS UMR 7362, University of Strasbourg, 3 rue de l&apos;Argonne, 67000 Strasbourg, France</addr-line>
</aff>
<pub-date pub-type="epub">
<day>20</day>
<month>08</month>
<year>2015</year>
</pub-date>
<volume>XL-3/W3</volume>
<fpage>595</fpage>
<lpage>599</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2015 A. Stumpf et al.</copyright-statement>
<copyright-year>2015</copyright-year>
<license license-type="open-access">
<license-p>This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit <ext-link ext-link-type="uri"  xlink:href="https://creativecommons.org/licenses/by/3.0/">https://creativecommons.org/licenses/by/3.0/</ext-link></license-p>
</license>
</permissions>
<self-uri xlink:href="https://isprs-archives.copernicus.org/articles/XL-3-W3/595/2015/isprs-archives-XL-3-W3-595-2015.html">This article is available from https://isprs-archives.copernicus.org/articles/XL-3-W3/595/2015/isprs-archives-XL-3-W3-595-2015.html</self-uri>
<self-uri xlink:href="https://isprs-archives.copernicus.org/articles/XL-3-W3/595/2015/isprs-archives-XL-3-W3-595-2015.pdf">The full text article is available as a PDF file from https://isprs-archives.copernicus.org/articles/XL-3-W3/595/2015/isprs-archives-XL-3-W3-595-2015.pdf</self-uri>
<abstract>
<p>The increasing fleet of VHR optical satellites (e.g. Pléiades, Spot 6/7, WorldView-3) offers new opportunities for the monitoring of
surface deformation resulting from gravitational (e.g. glaciers, landslides) or tectonic forces (coseismic slip). Image correlation
techniques have been developed and successfully employed in many geoscientific studies to quantify horizontal surface deformation
at sub-pixel precision. The analysis of time-series, however, has received less attention in this context and there is still a lack of
techniques that fully exploit archived image time-series and the increasing flux of incoming data. This study targets the development
of an image correlation processing chain that relies on multiple pair-wise matching to exploit the redundancy of deformation
measurements recorded at different view angles and over multiple time steps. The proposed processing chain is based on a
hierarchical image correlation scheme that readily uses parallel processing. Since pair-wise matching can be performed
independently the distribution of individual tasks is straightforward and yields to significant reductions of the overall runtime scaling
with the available HPC infrastructure. We find that it is more convenient to implement experimental analytical tasks in a high-level
programming language (i.e. R) and explore the use of parallel programming to compensate for performance bottlenecks of the
interpreted language. Preliminary comparisons against maps from domain expert suggest that the proposed methodology is suitable
to eliminate false detections and, thereby, enhances the reliability of correlation-based detections of surface deformation.</p>
</abstract>
<counts><page-count count="5"/></counts>
</article-meta>
</front>
<body/>
<back>
</back>
</article>