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Morphological filling of digital elevation models

Krauß, Thomas and d'Angelo, Pablo (2011) Morphological filling of digital elevation models. In: The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, pp. 1-8. Institute of Photogrammetry and GeoInformation, Leibniz Universität Hannover. High-Resolution Earth Imaging for Geospatial Information, 14.-17.06.2011, Hannover, Germany. ISSN 1682-1777

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Abstract

In this paper a new approach for a more detailed post processing and filling of digital elevation models (DEMs) in urban areas is presented. To reach the required specifications in a first step the errors in digital surface models (DSMs) generated by dense stereo algorithms are analyzed and methods for detection and classification of the different types of errors are implemented. Subsequently the classified erroneous areas are handled in separate manner to eliminate outliers and fill the DSM properly. The errors which can be detected in DSMs range from outliers – single pixels or small areas containing extremely high or low values – over noise from mismatches, single small holes to occlusions, where large areas are not visible in one of the images of the stereo pair. To validate the presented method artificial DSMs are generated and superimposed with all different kinds of described errors like noise (small holes cut in), outliers (small areas moved up/down), occlusions (larger areas beneath steep walls) and so on. The method is subsequently applied to the artificial DSMs and the resulting filled DSMs are compared to the original artificial DSMs without the introduced errors. Also the method is applied to stereo satellite generated DSMs from the ISPRS Comission 1 WG4 benchmark dataset and the results are checked with the also provided first pulse laser DSM data. Finally the results are discussed, strengths and weaknesses of the approach are shown and suggestions for application and optimization are given.

Item URL in elib:https://elib.dlr.de/72738/
Document Type:Conference or Workshop Item (Speech)
Title:Morphological filling of digital elevation models
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Krauß, ThomasDLR, MF-PBUNSPECIFIED
d'Angelo, PabloDLR, MF-PBUNSPECIFIED
Date:14 June 2011
Journal or Publication Title:The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-8
Publisher:Institute of Photogrammetry and GeoInformation, Leibniz Universität Hannover
Series Name:The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
ISSN:1682-1777
Status:Published
Keywords:VHR satellite data, stereo images, digital surface models, filling, morphology
Event Title:High-Resolution Earth Imaging for Geospatial Information
Event Location:Hannover, Germany
Event Type:international Conference
Event Dates:14.-17.06.2011
Organizer:Institute of Photogrammetry and GeoInformation, Leibniz Universität Hannover
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben hochauflösende Fernerkundungsverfahren
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Photogrammetry and Image Analysis
Deposited By: Krauß, Thomas
Deposited On:13 Dec 2011 10:56
Last Modified:31 Jul 2019 19:34

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