Experimental Sentinel-2 LAI estimation using parametric, non-parametric and physical retrieval methods - A comparison

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Optical remote sensing and the retrieval of terrestrial vegetation bio-geophysical properties - A review (2015, background): “The same conclusion was reached in a related paper (Verrelst et al., 2015) where a multitude of parametric, non-parametric and physical methods were systematically and quantitatively evaluated on LAI retrieval accuracy and processing speed based on experimental data.”
Remote Sensing for Precision Agriculture: Sentinel-2 Improved Features and Applications (2020, background): “It is relevant to point that as an experimental Sentinel-2 approach done with simulated Sentinel-2 imagery in 2015 [43], even before its launch, it already showed potential for retrieving LAI and with actual Sentinel-2 data it is currently fully operational.”
Evaluation of the PROSAIL Model Capabilities for Future Hyperspectral Model Environments: A Review Study (2018, methodology): “A further advantage of these strategies is the provision of uncertainty estimates, for instance through GPR, being indispensable for variable retrievals [87].”