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Urban Atlas – DLR Processing Chain for Orthorectification of Prism and AVNIR-2 Images and TerraSAR-X as possible GCP Source

Schneider, Mathias and Müller, Rupert and Krauß, Thomas and Reinartz, Peter and Hörsch, Bianca and Schmuck, Siegfried (2010) Urban Atlas – DLR Processing Chain for Orthorectification of Prism and AVNIR-2 Images and TerraSAR-X as possible GCP Source. In: Internet Proceedings, pp. 1-6. 3rd ALOS PI Symposium, 09.-13. Nov. 2009, Kona, USA.

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Official URL: http://www.asf.alaska.edu/content/pi_symp/Schneider_M._urban-paper.pdf


In the first part of this paper, the semi-automatic processing chain established at the DLR for the processing of PRISM and AVNIR-2 data in the framework of Urban Atlas is described. Although the processing chain was designed to be fully automatic, the lack of a sufficient accurate reference image necessitates the manual measurement of ground control points (GCP) from digital maps and aerial imagery to fulfill the accuracy requirements of 5 m RMSE in case of PRISM images. In case of AVNIR-2 images, the internal reference database available at DLR was sufficient accurate to allow for an automatic GCP generation. Since no ground truth was available, the included quality check uses different criteria to allow for a quality measure for each image. In the second part of the paper, the accuracy of the orthorectified scenes is analyzed. Up to now, more than 200 PRISM and 100 AVNIR-2 scenes for 43 European cities are processed. The overall accuracy statistics are presented and additionally some single scenes are evaluated in areas where additional ground truth is available. In further investigations, TerraSAR-X data was evaluated regarding its potential as source for GCPs. The very high geometric accuracy of geocoded data of the TerraSAR-X satellite has been shown in several investigations and thus qualifies the data as GCP source. Different methods of retrieving GCPs from TerraSAR-X data have been evaluated in the third part of the paper: manual measurements or local image matching using mutual information. By adjustment calculations, falsely matched points can be eliminated and an optimal improvement can be found. After the orthorectification of the PRISM data using these improvements, the results are compared to PRISM data that were orthorectified using conventional ground control information from GPS measurements.

Item URL in elib:https://elib.dlr.de/63033/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Urban Atlas – DLR Processing Chain for Orthorectification of Prism and AVNIR-2 Images and TerraSAR-X as possible GCP Source
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schneider, Mathiasmathias.schneider (at) dlr.deUNSPECIFIED
Müller, RupertRupert.Mueller (at) dlr.deUNSPECIFIED
Krauß, ThomasThomas.Krauss (at) dlr.dehttps://orcid.org/0000-0001-6004-1435
Reinartz, PeterPeter.Reinartz (at) dlr.deUNSPECIFIED
Hörsch, BiancaBianca.Hoersch (at) esa.intUNSPECIFIED
Schmuck, SiegfriedSiegfried.Schmuck (at) esa.intUNSPECIFIED
Date:January 2010
Journal or Publication Title:Internet Proceedings
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 1-6
Keywords:Urban Atlas; Orthorectification; Processing Chain; Radar/Optik Fusion
Event Title:3rd ALOS PI Symposium
Event Location:Kona, USA
Event Type:international Conference
Event Dates:09.-13. Nov. 2009
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Photogrammetrie und Bildanalyse (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Photogrammetry and Image Analysis
Deposited By: Schneider, Mathias
Deposited On:02 Feb 2010 10:01
Last Modified:31 Jul 2019 19:27

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