6533b81ffe1ef96bd1278e05

RESEARCH PRODUCT

Comparison of metrics to remove the influence of geometrical conditions on soil reflectance

Frédéric BaretPierre GoutonAudrey RomanWeidong LiuFrancois TavinLudovic JournauxSandrine Mathieu

subject

Coefficient of determinationMean squared errorSoil waterMultispectral imageMetric (mathematics)Surface roughnessHyperspectral imagingReflectivityRemote sensingMathematics

description

The objective of this work is to find the best metric to ignore the variations of soil reflectance induced by the solar-view angles geometry. Differences between spectra measured for the same soil under different observation and illumination configurations can leads to misclassifications. Using ninety two soils of different composition measured under twenty eight solar- view angles geometries, we tested 3 metrics : RMSE, SAM, R2 (the coefficient of determination) and we compared their performances. The best metric seems to be the coefficient of determination with 93 % of good classifications.

yearjournalcountryeditionlanguage
2007-01-012007 IEEE International Geoscience and Remote Sensing Symposium
https://doi.org/10.1109/igarss.2007.4423929