Back to Search Start Over

Invasive species change detection using artificial neural networks and CASI hyperspectral imagery.

Authors :
Ruiliang Pu
Peng Gong
Yong Tian
Xin Miao
Carruthers, Raymond I.
Anderson, Gerald L.
Source :
Environmental Monitoring & Assessment; May2008, Vol. 140 Issue 1-3, p15-32, 18p, 7 Charts, 1 Graph, 5 Maps
Publication Year :
2008

Abstract

For monitoring and controlling the extent and intensity of an invasive species, a direct multi-date image classification method was applied in invasive species (salt cedar) change detection in the study area of Lovelock, Nevada. With multidate Compact Airborne Spectrographic Imager (CASI) hyperspectral data sets, two types of hyperspectral CASI input data and two classifiers have been examined and compared for mapping and monitoring the salt cedar change. The two types of input data are all two-date original CASI bands and 12 principal component images (PCs) derived from the two-date CASI images. The two classifiers are an artificial neural network (ANN) and linear discriminant analysis (LDA). The experimental results indicate that (1) the direct multitemporal image classification method applied in land cover change detection is feasible either with original CASI bands or PCs, but a better accuracy was obtained from the CASI PCA transformed data; (2) with the same inputs of 12 PCs, the ANN outperforms the LDA due to the ANN’s non-linear property and ability of handling data without a prerequisite of a certain distribution of the analysis data. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
01676369
Volume :
140
Issue :
1-3
Database :
Complementary Index
Journal :
Environmental Monitoring & Assessment
Publication Type :
Academic Journal
Accession number :
31439340
Full Text :
https://doi.org/10.1007/s10661-007-9843-7