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DSM and Orthoimages from QuickBird and Ikonos Data using Rational Polynomial Functions

Lehner, Manfred und Müller, Rupert und Reinartz, Peter (2005) DSM and Orthoimages from QuickBird and Ikonos Data using Rational Polynomial Functions. In: High Resolution Earth Imaging for Geospatial Information, Vol. XXXVI, . High Resolution Earth Imaging for Geospatial Information, Hannover, 17.-20. Mai 2005. ISBN ISSN No. 1682-1777.

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Kurzfassung

The rigorous approach for the derivation of digital surface models (DSM) and orthoimages from satellite and airborne scanner imagery via full modelling of the imaging process requires the knowledge of exterior and interior orientation of the camera. For IKONOS and QuickBird this basic data is not (fully) available to the user. Instead, rational polynomial functions (RPF) in standard form are provided as a substitute for describing the relationship between image and object space. To be able to derive DSM and orthoimages for this type of data even in the absence of appropriate ground control, software based on RPF has been developed. The software allows a lot of datums and projections for input and output data. This is important for worldwide application e.g. in case of catastrophes. The paper shows that a RPF is very near to linear in the object space variables longitude, latitude and height. This explains a large convergence radius and a rapid convergence in case of forward intersection. Residuals in image space from forward intersection are small and nearly constant in case of the GEO IKONOS-2 images tested. Large (also nearly constant) residuals in case of the QuickBird stereo pair can be used for a relative correction of the RPF either using residuals from verticality constraints with manually measured top/foot tie point pairs of large buildings or from forward intersection of a set of excellent tie points from matching. These corrected RPF can then be used to create a self-consistent set of DSM and orthoimages. The DSM derived from the high resolution data via RPF processing have been compared to best DSM available which was in most cases a C-Band SRTM model. Estimated mapping accuracy was found to correspond with the promises of the image provider in the case of available ground control.

Dokumentart:Konferenzbeitrag (Paper)
Zusätzliche Informationen: LIDO-Berichtsjahr=2005,
Titel:DSM and Orthoimages from QuickBird and Ikonos Data using Rational Polynomial Functions
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Lehner, ManfredNICHT SPEZIFIZIERT
Müller, RupertNICHT SPEZIFIZIERT
Reinartz, PeterNICHT SPEZIFIZIERT
Datum:2005
Erschienen in:High Resolution Earth Imaging for Geospatial Information
Band:Vol. XXXVI
Seitenbereich:
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
Heipke, C.NICHT SPEZIFIZIERT
Jacobsen, K.NICHT SPEZIFIZIERT
Gerke, M.NICHT SPEZIFIZIERT
Name der Reihe:IAPRS
ISBN:ISSN No. 1682-1777
Status:veröffentlicht
Stichwörter:rational polynomial functions, orthoimages, digital surface models, QUICKBIRD, IKONOS
Veranstaltungstitel:High Resolution Earth Imaging for Geospatial Information, Hannover, 17.-20. Mai 2005
Veranstalter :ISPRS Working Groups I/5 und IV/3
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EO - Erdbeobachtung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):NICHT SPEZIFIZIERT
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Methodik der Fernerkundung
Hinterlegt von: Cornelia Roehl
Hinterlegt am:09 Okt 2005
Letzte Änderung:14 Jan 2010 19:55

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