Document Type

Article

Publication Date

7-2014

Abstract

In this study, the Savitzky-Golay filter was applied to smooth observed unnatural variations in the temporal profiles of the Normalized Difference Vegetation Index (NDVI} and the Enhanced Vegetation Index {EVI} time series from the MODerate Resolution Imaging Spectroradiometer (MODIS}. We computed two sets of land cover classifications based 011 the NDVI and EVI time series before and after applying the Savitzky-Golay filter. The resulting classification from the filtered versions of the vegetation indices showed a substantial improvement in accuracy when compared to the classifications from the unfiltered versions. The classification by the EVIsg had the highest K (0.72} for all classes compared to those of the EVI (0.67}, NDVI (0.63}, and NDV/sg (0.62). Therefore, we conclude that the EVIsg is best suited for land cover classification compared to the other data sets in this study.

Comments

This article was originally published in Photogrammetric Engineering & Remote Sensing, volume 80, number 7, in July 2014. DOI: 10.14358/PERS.80.7.675

Published by the American Society for Photogrammetry and Remote Sensing.

Copyright

American Society for Photogrammetry and Remote Sensing (ASPRS)

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