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Comparison of the Accuracy of DEM from SPOT HRS two-fold Stereo Data and HRS/HRG three-fold Stereo Data in Barcelona Test Site

Müller, Rupert and Reinartz, Peter and Lehner, Manfred and Schroeder, Manfred (2004) Comparison of the Accuracy of DEM from SPOT HRS two-fold Stereo Data and HRS/HRG three-fold Stereo Data in Barcelona Test Site. In: ISPRS Congress Proceedings 2004, 35, Part B1, pp. 469-473. ISPRS Congress, Istanbul, July 2004. ISBN 1682-1750.

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Abstract

ISPRS and CNES announced the HRS (High Resolution Stereo) Scientific Assessment Program during the ISPRS Commission I Symposium in Denver in November 2002. 9 test areas throughout the world have been selected for this program. For the Barcelona test site not only two-fold stereo HRS data but also HRG data of the same region have been acquired. This leads to the possibility to compare the DEM production and accuracy differences between two-fold and three-fold stereo data sets. For the derivation of the DEMs, the DLR own stereo processing software, developed for the MOMS-2P three line stereo camera is used. The matching process using three images is more robust than with two images due to the possibility to eliminate blunders by matching three stereo pairs. Furthermore the forward intersection of the three image rays allows better constraints for the object space intersection. Due to these reasons the DEM filtering in object space that is necessary for DEMs from two-fold stereo is very much reduced in the case of three-fold stereo data. The derived DEMs are compared with the high precision reference DEM by several methods regarding: height accuracy, location accuracy, blunders, error budget depending on surface properties etc.,.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2004,
Title:Comparison of the Accuracy of DEM from SPOT HRS two-fold Stereo Data and HRS/HRG three-fold Stereo Data in Barcelona Test Site
Authors:
AuthorsInstitution or Email of Authors
Müller, RupertUNSPECIFIED
Reinartz, PeterUNSPECIFIED
Lehner, ManfredUNSPECIFIED
Schroeder, ManfredUNSPECIFIED
Date:2004
Journal or Publication Title:ISPRS Congress Proceedings 2004
Volume:35, Part B1
Page Range:pp. 469-473
Editors:
EditorsEmail
Altan, M. OrhanUNSPECIFIED
ISBN:1682-1750
Status:Published
Keywords:Stereoscopic data, image matching, two-fold stereo, three-fold stereo, DEM generation, accuracy analysis
Event Title:ISPRS Congress, Istanbul, July 2004
Organizer:ISPRS
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):UNSPECIFIED
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute
Deposited By: Cornelia Roehl
Deposited On:31 Jan 2006
Last Modified:06 Jan 2010 22:28

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