Multispectral remote sensing from unmanned aircraft: image processing workflows and applications for rangeland environments

TitleMultispectral remote sensing from unmanned aircraft: image processing workflows and applications for rangeland environments
Publication TypeJournal Article
Year of Publication2011
AuthorsLaliberte, Andrea S., Goforth MA, Steele C.M., Rango A
JournalRemote Sensing
Volume3
Issue11
Start Page2529
Pagination2529-2551
Date Published11/2011
Accession NumberJRN00578
ARIS Log Number273869
Keywordsclassification, multispectral, reflectance, Unmanned AircraftSystem (UAS)
Abstract

Using unmanned aircraft systems (UAS) as remote sensing platforms offers the unique ability for repeated deployment for acquisition of high temporal resolution data at very high spatial resolution. Multispectral remote sensing applications from UAS are reported in the literature less commonly than applications using visible bands, although light-weight multispectral sensors for UAS are being used increasingly. . In this paper, we describe challenges and solutions associated with efficient processing of multispectral imagery to obtain orthorectified, radiometrically calibrated image mosaics for the purpose of rangeland vegetation classification. We developed automated batch processing methods for file conversion, band-to-band registration, radiometric correction, and orthorectification. An object-based image analysis approach was used to derive a species-level vegetation classification for the image mosaic with an overall accuracy of 87%. We obtained good correlations between: (1) ground and airborne spectral reflectance (R2 = 0.92); and (2) spectral reflectance derived from airborne and WorldView-2 satellite data for selected vegetation and soil targets. UAS-acquired multispectral imagery provides quality high resolution information for rangeland applications with the potential for upscaling the data to larger areas using high resolution satellite imagery.

URL/files/bibliography/11-034.pdf
DOI10.3390/rs3112529