Use of airborne video data for the characterisation of tropical savannas in northern Australia: the optimal spatial resolution for remote sensing applications

Use of airborne video data for the characterisation of tropical savannas in northern Australia: the optimal spatial resolution for remote sensing applications

Title
Publication TypeJournal Article
Year of Publication2001
AuthorsMenges, CH, Hill, GJE, Ahmad, W
JournalInternational Journal of Remote Sensing
Volume22
Issue5
Pagination727 - 740
Date Published01/01/01
ISSN0143-1161
Abstract

Very high resolution airborne video data were used to assess the optimal spatial resolution for mapping the land cover types occurring in the tropical savannas of northern Australia. Canopy cover and principal component images were extracted for four vegetation communities and investigated separately. Analysis of average variance in conjunction with a proposed visual analysis method proved more successful in establishing the optimal resolution than analysis of spatial autocorrelation using semivariograms. The optimal resolution was found to be dependent on the structure of the vegetation community as well as the image component under investigation. A resolution of between 20 and 27 m is optimal for all instances examined.

URLhttp://espace.cdu.edu.au/view/cdu:502

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