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Comparison of DSM generation methods of urban areas from IKONOS images

Krauß, Thomas and Lehner, Manfred and Reinartz, Peter (2006) Comparison of DSM generation methods of urban areas from IKONOS images. In: Proceedings of the ISPRS, 36 (1). ISPRS Commision I Symposium, 2006-07-04 - 2006-07-06, Paris. ISSN 1682-1777

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In this paper two methods, an area based matching and a so called dynamic line warping, for generating digital surface models (DSMs) from IKONOS image pairs are compared and their limitations and usability for the rapid generation of good DSMs are discussed. The new dynamic line warping method is based on techniques used in speech recognition for warping corresponding epipolar lines of the stereo images onto each other in order to extract so parallaxes and object heights. One critical parameter for the derivation of DSMs is the convergence angle of the two stereo images. A small convergence angle gives similar images with smaller parallaxes and is better for area based matching techniques but is said to result in larger height errors and lacks of views from vertical features like walls. A large convergence angle - as used in the standard stereo products of most satellite image providers - on the other hand leads in urban areas to many features hidden in one or the other image and very different viewing conditions leading to more problems for intensity based matching. Therefore three IKONOS scenes with different convergence angles are used and the results are compared qualitatively.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Comparison of DSM generation methods of urban areas from IKONOS images
AuthorsInstitution or Email of Authors
Lehner, ManfredUNSPECIFIED
Reinartz, PeterUNSPECIFIED
Date:July 2006
Journal or Publication Title:Proceedings of the ISPRS
Refereed publication:No
In ISI Web of Science:No
Keywords:VHR data, Stereo Data, DSM generation, dynamic programming
Event Title:ISPRS Commision I Symposium
Event Location:Paris
Event Type:international Conference
Event Dates:2006-07-04 - 2006-07-06
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 Bildwissenschaften (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Image Science
Deposited By: Thomas Krauß
Deposited On:03 Aug 2006
Last Modified:12 Dec 2013 20:20

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