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Calibration of WorldView-2 satellite imagery to reflectance data using an empirical line method
Citation
Staben, GW and Pfitzner, K and Bartolo, R and Lucieer, A, Calibration of WorldView-2 satellite imagery to reflectance data using an empirical line method, Proceedings of the 34th International Symposium on Remote Sensing of Environment (ISRSE34), April 2011, Sydney, Australia (2011) [Non Refereed Conference Paper]
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Abstract
Obtaining accurate quantitative information
from multispectral satellite data requires the conversion of
raw digital numbers (DN) to reflectance. Sensor
characteristics, illumination geometry and atmospheric
conditions affect the signal received by a multispectral
satellite sensor. In this paper an empirical line method is
used to calibrate an eight band multispectral WorldView-2
image. Correction for illumination geometry and
atmospheric attenuation in the imagery was achieved by
developing a non-linear relationship between top of
atmosphere (TOA) spectral radiance and surface reflectance
values measured from field targets, using an (ASD Inc)
FieldSpecPro spectrometer. An accuracy assessment was
undertaken by comparing image reflectance values against
the surface reflectance values of 17 field targets. The overall
accuracy based on the RMSE for the eight bands ranged
between 0.69 – 2.35% with the greatest variance in the near
infrared bands. The results of this study show that
empirical line methods can be used to successfully calibrate
WorldView-2 satellite imagery to reflectance data.
Item Details
Item Type: | Non Refereed Conference Paper |
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Keywords: | atmospheric correction, empirical line method, WorldView-2 |
Research Division: | Earth Sciences |
Research Group: | Physical geography and environmental geoscience |
Research Field: | Physical geography and environmental geoscience not elsewhere classified |
Objective Division: | Environmental Management |
Objective Group: | Management of Antarctic and Southern Ocean environments |
Objective Field: | Assessment and management of Antarctic and Southern Ocean ecosystems |
UTAS Author: | Lucieer, A (Professor Arko Lucieer) |
ID Code: | 76702 |
Year Published: | 2011 |
Deposited By: | Geography and Environmental Studies |
Deposited On: | 2012-03-09 |
Last Modified: | 2012-10-22 |
Downloads: | 6 View Download Statistics |
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