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The northern hemisphere of asteroid (21) Lutetia—topography and orthoimages from Rosetta OSIRIS NAC image data

Preusker, Frank and Scholten, F. and Knollenberg, J. and Kührt, E. and Matz, K.-D. and Mottola, S. and Roatsch, T. and Thomas, N. (2012) The northern hemisphere of asteroid (21) Lutetia—topography and orthoimages from Rosetta OSIRIS NAC image data. Planetary and Space Science, 1 (66), pp. 54-63. Elsevier. DOI: org/10.1016/j.pss.2012.01.008

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Abstract

During the flyby at asteroid (21) Lutetia by the Rosetta spacecraft in July 2010, the OSIRIS imaging system onboard acquired several hundred images of Lutetia's surface. Images of the OSIRIS NAC (Narrow Angle Camera) comprise up to 60 m/pixel ground resolution. We analyzed 84 multi-spectral NAC images with stereo-photogrammetric methods. A 3D point control network within a photogrammetric block adjustment was used to derive improved orientation data (pointing and position) for the Rosetta spacecraft as well as corrections of the pre-flight estimates of Lutetia's position in space. For the generation of a digital terrain model (DTM), we selected a subset of 10 OSIRIS NAC images within a multi-image matching process. We combined the matching results with the adjusted orientation data and derived more than 12 million of surface points with a 3D point accuracy of ∼40 m (2/3 pixel) and a vertical component of that of ∼15 m (1/4 pixel). The 3D surface points were converted to a final 60 m raster DTM, which covers about 78% of the entire northern hemisphere. All 84 NAC images were then ortho-rectified on the basis of the improved orientation and the DTM. Thus, orthoimage products with sub-pixel registration accuracy are available for multi-spectral mapping of the surface of Lutetia. Finally, the DTM was textured with an orthoimage mosaic to form a VRML dataset for full-resolution interactive 3D investigations.

Item URL in elib:https://elib.dlr.de/78576/
Document Type:Article
Title:The northern hemisphere of asteroid (21) Lutetia—topography and orthoimages from Rosetta OSIRIS NAC image data
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Preusker, Frankfrank.preusker (at) dlr.deUNSPECIFIED
Scholten, F.frank.scholten (at) dlr.deUNSPECIFIED
Knollenberg, J.joerg.knollenberg (at) dlr.deUNSPECIFIED
Kührt, E.ekkehard.kuehrt (at) dlr.deUNSPECIFIED
Matz, K.-D.klaus-dieter.matz (at) .dlr.deUNSPECIFIED
Mottola, S.stefano.mottola (at) dlr.deUNSPECIFIED
Roatsch, T.thomas.roatsch (at) dlr.deUNSPECIFIED
Thomas, N.University of Bern, Space Research and Planetology Division, Bern, SwitzerlandUNSPECIFIED
Date:2012
Journal or Publication Title:Planetary and Space Science
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:1
DOI :org/10.1016/j.pss.2012.01.008
Page Range:pp. 54-63
Publisher:Elsevier
Status:Published
Keywords: Lutetia; Asteroid; Rosetta; OSIRIS; Digital terrain models; Orthoimages
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Projekt ROSETTA Instrumente
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research
Institute of Planetary Research > Asteroids and Comets
Institute of Planetary Research > Planetary Geology
Institute of Planetary Research > Planetary Geodesy
Deposited By: Brumm, Laura-Maria
Deposited On:21 Nov 2012 09:58
Last Modified:01 Dec 2018 19:48

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