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DSM Generation from High Resolution Satellite Imagery Using Additional Information Contained in Existing DSM

Hoja, Danielle and Reinartz, Peter and Lehner, Manfred (2005) DSM Generation from High Resolution Satellite Imagery Using Additional Information Contained in Existing DSM. In: High Resolution Earth Imaging for Geospatial Information, Vol. XXXVI. ISPRS. ISPRS Hannover Workshop 2005, Hannover, 17.-20. Mai 2005. ISBN 1682-1777 ISSN.

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Abstract

Information about the shape of the Earth's surface are required for several tasks like the creation of orthoimages or flood control. The generation of digital elevation models (DEM) with stereo images from space, or with interferometric synthetic aperture radar (InSAR) have been proven to be reliable and cost effective for larger regions, especially in remote areas and developing countries. Instead of a DEM, a digital surface model (DSM) is generated with remote sensing methods. Optical stereo image pairs are matched to get a large number of automatically located conjugate points. These points are mapped by forward intersection into the object space. The DSM is retrieved from these points by triangulation and interpolation. This method is mainly used to generate DSM from scratch. Thereby, the matching of optical images results often in areas without matching points, e.g. due to low contrast. This paper follows the approach to include the information of existing InSAR DSM into the point data set before or during the DSM generation from optical stereo images. Several methods are discussed and a SPOT image pair is analysed. Comparisons are shown for two inter¬po¬lations with and without additional input. Advantages of using the single data sets and of the combined data sets are discussed.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2005, monograph_id=Part I/W3,
Title:DSM Generation from High Resolution Satellite Imagery Using Additional Information Contained in Existing DSM
Authors:
AuthorsInstitution or Email of Authors
Hoja, DanielleUNSPECIFIED
Reinartz, PeterUNSPECIFIED
Lehner, ManfredUNSPECIFIED
Date:2005
Journal or Publication Title:High Resolution Earth Imaging for Geospatial Information
Volume:Vol. XXXVI
Editors:
EditorsEmail
ISPRS, UNSPECIFIED
Publisher:ISPRS
Series Name:ISPRS Publications
ISBN:1682-1777 ISSN
Status:Published
Keywords:DEM Generation, DSM, Optical Stereo Data, InSAR, Triangulation, DSM Integration
Event Title:ISPRS Hannover Workshop 2005, Hannover, 17.-20. Mai 2005
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:14 Jan 2010 19:50

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