Search results for "cost functions"

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Multiple Cost Functions and Regularization Options for Improved Retrieval of Leaf Chlorophyll Content and LAI through Inversion of the PROSAIL Model

2013

Abstract: Lookup-table (LUT)-based radiative transfer model inversion is considered a physically-sound and robust method to retrieve biophysical parameters from Earth observation data but regularization strategies are needed to mitigate the drawback of ill-posedness. We systematically evaluated various regularization options to improve leaf chlorophyll content (LCC) and leaf area index (LAI) retrievals over agricultural lands, including the role of (1) cost functions (CFs); (2) added noise; and (3) multiple solutions in LUT-based inversion. Three families of CFs were compared: information measures, M-estimates and minimum contrast methods. We have only selected CFs without additional parame…

PROSAILradiative transfer modelsScienceQEstimatorInversion (meteorology)biophysical parametersLUT-based inversionDatabase normalizationAtmospheric radiative transfer codescost functionsApproximation errorLookup tableGeneral Earth and Planetary Sciencesbiophysical parameters; LUT-based inversion; cost functions; radiative transfer models; PROSAIL; Sentinel-2Sentinel-2Leaf area indexQAImage resolutionRemote sensingMathematicsRemote Sensing; Volume 5; Issue 7; Pages: 3280-3304
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