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A new tool for variable multiple endmember spectral mixture analysis (VMESMA)

Garcia Haro, Javier und Sommer, Stefan und Kemper, Thomas (2005) A new tool for variable multiple endmember spectral mixture analysis (VMESMA). International Journal of Remote Sensing, 26 (10), Seiten 2135-2162. Taylor & Francis. DOI: 10.1080/01431160512331337817.

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Offizielle URL: http://www.tandf.co.uk/journals/titles/01431161.asp

Kurzfassung

Spectral mixture analysis is a widely used method to determine the sub-pixel abundance of vegetation, soils and other spectrally distinct materials that fundamentally contribute to the spectral signal of mixed pixels. In this paper we present a computing and environmental analysis tool, named VMESMA, which extends the possibilities of conventional spectral unmixing. The basis is the categorization of the scene into different units or scene sub-areas and software guidance for endmember selection, allowing for a better adaptation of the model to the conditions of the main cover types. For each pixel an individual combination of endmembers may be selected by automated matching to model quality criteria. This hierarchical assessment can incorporate a priori knowledge from different data sources, including information derived from the unmixing results. Based on an iterative feedback process, the unmixing performance may be improved at each stage until an optimum level is reached. VMESMA allows an immediate estimate of the proportions, which is very robust against external factors (e.g. illumination) and canopy shade. An application of VMESMA on hyperspectral data has been conducted to evaluate the possibilities to map residual sludge and sludge derivatives for two consecutive years with changing land surface conditions. The method offered greater flexibility and new possibilities to improve the understanding and modelling of the scene characteristics.

Dokumentart:Zeitschriftenbeitrag
Titel:A new tool for variable multiple endmember spectral mixture analysis (VMESMA)
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Garcia Haro, JavierDepartament de Termodinamica, Facultat de Fisica, Valencia, Spain
Sommer, StefanEC Joint Research Centre, Institute for Environment and Sustainability, Soil & Waste
Kemper, ThomasNICHT SPEZIFIZIERT
Datum:20 Mai 2005
Erschienen in:International Journal of Remote Sensing
Band:26
DOI :10.1080/01431160512331337817
Seitenbereich:Seiten 2135-2162
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
Cracknell, A.P.NICHT SPEZIFIZIERT
Verlag:Taylor & Francis
Status:veröffentlicht
Stichwörter:Spectral Mixture Analysis, Endmember Selection
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):W - Vorhaben Spektrometrische Verfahren und Konzepte der Fernerkundung (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Deutsches Fernerkundungsdatenzentrum > Umwelt und Sicherheit > Umwelt und Geoinformation
Hinterlegt von: Dr.rer.nat. Thomas Kemper
Hinterlegt am:10 Jan 2006
Letzte Änderung:12 Dez 2013 20:08

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