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DETAILED AND HIGHLY ACCURATE 3D MODELS OF HIGH MOUNTAIN AREAS BY THE MACS-HIMALAYA AERIAL CAMERA PLATFORM

Brauchle, Jörg and Hein, Daniel and Berger, R. (2015) DETAILED AND HIGHLY ACCURATE 3D MODELS OF HIGH MOUNTAIN AREAS BY THE MACS-HIMALAYA AERIAL CAMERA PLATFORM. International Archives of Photogrammetry and Remote Sensing, XL-7/W (40), pp. 1129-1136. International Society for Photogrammetry and Remote Sensing. DOI: 10.5194/isprsarchives-XL-7-W3-1129-2015 ISSN 0256-1840

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Official URL: http://dx.doi.org/10.5194/isprsarchives-XL-7-W3-1129-2015

Abstract

Remote sensing in areas with extreme altitude differences is particularly challenging. In high mountain areas specifically, steep slopes result in reduced ground pixel resolution and degraded quality in the DEM. Exceptionally high brightness differences can in part no longer be imaged by the sensors. Nevertheless, detailed information about mountainous regions is highly relevant: time and again glacier lake outburst floods (GLOFs) and debris avalanches claim dozens of victims. Glaciers are sensitive to climate change and must be carefully monitored. Very detailed and accurate 3D maps provide a basic tool for the analysis of natural hazards and the monitoring of glacier surfaces in high mountain areas. There is a gap here, because the desired accuracies are often not achieved. It is for this reason that the DLR Institute of Optical Sensor Systems has developed a new aerial camera, the MACS-Himalaya. The measuring unit comprises four camera modules with an overall aperture angle of 116° perpendicular to the direction of flight. A High Dynamic Range (HDR) mode was introduced so th at within a scene, bright areas such as sun-flooded snow and dark areas such as shaded stone can be imaged. In 2014, a measuring survey was performed on the Nepalese side of the Himalayas. The remote sensing system was carried by a Stemme S10 motor glider. Amongst other targets, the Seti Valley, Kali-Gandaki Valley and the Mt. Everest/Khumbu Region were imaged at heights up to 9,200 m. Products such as dense point clouds, DSMs and true orthomosaics with a ground pixel resolution of up to 15 cm were produced. Special challenges and gaps in th e investigation of high mountainareas, approaches for resolution of these problems, the camera system and the state of evaluation are presented with examples.

Item URL in elib:https://elib.dlr.de/98279/
Document Type:Article
Title:DETAILED AND HIGHLY ACCURATE 3D MODELS OF HIGH MOUNTAIN AREAS BY THE MACS-HIMALAYA AERIAL CAMERA PLATFORM
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Brauchle, JörgJoerg.Brauchle (at) dlr.deUNSPECIFIED
Hein, DanielDaniel.Hein (at) dlr.deUNSPECIFIED
Berger, R.Ralf.Berger (at) dlr.deUNSPECIFIED
Date:2015
Journal or Publication Title:International Archives of Photogrammetry and Remote Sensing
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:XL-7/W
DOI :10.5194/isprsarchives-XL-7-W3-1129-2015
Page Range:pp. 1129-1136
Editors:
EditorsEmail
UNSPECIFIEDInternational Society for Photogrammetry and Remote Sensing
Publisher:International Society for Photogrammetry and Remote Sensing
Series Name:ISPRS Archives
ISSN:0256-1840
Status:Published
Keywords:3D Model, Himalaya, MACS, Aerial Camera, DEM, Mt. Everest, glacier mass balance, HDR
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: Brauchle, Jörg
Deposited On:28 Sep 2015 07:41
Last Modified:01 Dec 2018 19:51

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