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Image Matching and Outlier Removal For large Scale DSM Generation

d'Angelo, Pablo (2010) Image Matching and Outlier Removal For large Scale DSM Generation. In: Convergence in Geomatics, pp. 1-5. CGC & ISPRS. ISPRS Symposium Commission I, 15.-18. Juni 2010, Calgary, Canada.



Digital surface models can be efficiently generated with automatic image matching from optical stereo images. Detailed reconstruction from very high resolution stereo images requires the use of dense stereo matching algorithms, such as Semiglobal Matching. If only a single stereo pair is available, the results contain a small amount of outliers, mostly due to changing reflectance behaviour, clouds, water and moving objects. This is especially critical for large scale and fully automated DSM generation with dedicated stereo satellites, such as Cartosat-1 and ALOS/PRISM. An effective outlier removal algorithm for dense stereo matching algorithms, based on region based consistency checks between to matching results with slightly different parameters is presented in this paper. Ground truth has been manually extracted on 66 test areas, covering different land cover types, seasons and elevation heights. On this diverse and demanding dataset more than 99\% of all outliers are removed automatically, with minimal influence on the correctly matched regions.}

Item URL in elib:https://elib.dlr.de/68543/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Image Matching and Outlier Removal For large Scale DSM Generation
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
d'Angelo, Pablopablo.angelo (at) dlr.deUNSPECIFIED
Date:June 2010
Journal or Publication Title:Convergence in Geomatics
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 1-5
Publisher:CGC & ISPRS
Series Name:ISPRS Proceedings
Keywords:Spaceborne Scanner Systems, Digital Elevation Models (DEM), Image Matching, CARTOSAT-1
Event Title:ISPRS Symposium Commission I
Event Location:Calgary, Canada
Event Type:international Conference
Event Dates:15.-18. Juni 2010
Organizer:CGC & 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):W - Vorhaben Photogrammetrie und Bildanalyse (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Photogrammetry and Image Analysis
Deposited By: Angelo, Dr. Pablo
Deposited On:27 Jan 2011 09:33
Last Modified:31 Jul 2019 19:31

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