Detection and classification of plant species through spectir airborne hyperspectral imagery in clark county, Nevada

Abstract

The non-native Saltcedar (Tamarix ramosissima Ledeb.) and the native Honey mesquite (Prosopis Glandulosa Torr.), exist in abundance in Clark County, NV. We are using remote sensing to measure changes in distribution and abundance of these species. We collected six strips of 1m-resolution SpecTIR hyperspectral images in Clark County on May, 2005. SpecTIR has 227 spectral bands ranging from 0.45 to 2.45 μm. We have explored the properties of these high-spatial resolution hyperspectral images, and we are now testing the potential for detecting and classifying Tamarix, Prosopis and other plant species along Muddy River. Spectral band selection and feature extraction methods are being used to reduce the dimension of the hyperspectral data and the distinguishable spectral characteristics are chosen for SAM (Spectral Angle Mapper) and supervised maximum likelihood (ML) classifiers. Terrestrial information and habitat knowledge of the vegetation are also incorporated into the classifier. The accuracy of classification results are being verified in relation to ground surveys. Preliminary results will be reported on this project. The results will provide evidence for a proposed project of vegetation delineation and change detection in Clark County.

Document Type

Conference Proceeding

Publication Date

12-1-2006

Journal Title

American Society for Photogrammetry and Remote Sensing - Annual Conference of the American Society for Photogrammetry and Remote Sensing 2006: Prospecting for Geospatial Information Integration

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