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VOLUME BASED DTM GENERATION FROM VERY HIGH RESOLUTION PHOTOGRAMMETRIC DSMs

Piltz, Björn and Bayer, Steven and Poznanska, Anna-Maria (2016) VOLUME BASED DTM GENERATION FROM VERY HIGH RESOLUTION PHOTOGRAMMETRIC DSMs. In: The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, XLI-B3, pp. 83-90. ISPRS Congress, 12.-19. JUli 2016, Prague, Czech Republic. DOI: 10.5194/isprs-archives-XLI-B3-1-2016

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Official URL: http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLI-B3/83/2016/

Abstract

In this paper we propose a new algorithm for digital terrain (DTM) model reconstruction from very high spatial resolution digital surface models (DSMs). It represents a combination of multi-directional filtering with a new metric which we call normalized volume above ground to create an above-ground mask containing buildings and elevated vegetation. This mask can be used to interpolate a ground-only DTM. The presented algorithm works fully automatically, requiring only the processing parameters minimum height and maximum width in metric units. Since slope and breaklines are not decisive criteria, low and smooth and even very extensive flat objects are recognized and masked. The algorithm was developed with the goal to generate the normalized DSM for automatic 3D building reconstruction and works reliably also in environments with distinct hillsides or terrace-shaped terrain where conventional methods would fail. A quantitative comparison with the ISPRS data sets Potsdam and Vaihingen show that 98-99% of all building data points are identified and can be removed, while enough ground data points (~66%) are kept to be able to reconstruct the ground surface. Additionally, we discuss the concept of size dependent height thresholds and present an efficient scheme for pyramidal processing of data sets reducing time complexity to linear to the number of pixels, O(WH).

Item URL in elib:https://elib.dlr.de/109806/
Document Type:Conference or Workshop Item (Poster)
Title:VOLUME BASED DTM GENERATION FROM VERY HIGH RESOLUTION PHOTOGRAMMETRIC DSMs
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Piltz, Björnbjoern.piltz (at) dlr.deUNSPECIFIED
Bayer, StevenSteven.Bayer (at) dlr.deUNSPECIFIED
Poznanska, Anna-MariaAnna-Maria.Poznanska (at) dlr.dehttps://orcid.org/0000-0002-9928-567X
Date:2016
Journal or Publication Title:The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:XLI-B3
DOI :10.5194/isprs-archives-XLI-B3-1-2016
Page Range:pp. 83-90
Editors:
EditorsEmail
Halounova, L.UNSPECIFIED
Schindler, K.UNSPECIFIED
Limpouch, A.UNSPECIFIED
Pajdla, T.UNSPECIFIED
Šafář, V.UNSPECIFIED
Mayer, H.UNSPECIFIED
Oude Elberink, S.UNSPECIFIED
Mallet, C.UNSPECIFIED
Rottensteiner, F.UNSPECIFIED
Brédif, M.UNSPECIFIED
Skaloud, J.UNSPECIFIED
Stilla, U.UNSPECIFIED
Status:Published
Keywords:digital surface model; digital terrain model; multi-directional; ground filtering
Event Title:ISPRS Congress
Event Location:Prague, Czech Republic
Event Type:international Conference
Event Dates:12.-19. JUli 2016
Organizer:ISPRS
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 Optische Technologien und Anwendungen
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Optical Sensor Systems > Sensor Concepts and Applications
Deposited By: Bayer, Steven
Deposited On:21 Dec 2016 10:23
Last Modified:31 Jul 2019 20:07

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