Fig. 5
From: Canopy height and biomass distribution across the forests of Iberian Peninsula
Performance of UNET canopy height models. Plot a and b are the testing scatterplot of ALS-Sentinel based and GEDI-Sentinel based UNET canopy height models, respectively. The X-axes in plot a and b are the observed canopy height in ALS and GEDI data, respectively, and the Y-axes in plot a and b are the prediction from the models. Plot c is the scatterplot that compares the ALS-Sentinel based and GEDI-Sentinel based UNET model at the location of NFI records, the X-axis is the prediction from ALS-Sentinel based UNET model, while the Y-axis is the prediction from GEDI-Sentinel based UNET model. Plot d and e compare the ALS-Sentinel based and GEDI-Sentinel based UNET model predictions and the NFI observations, respectively. The X-axes in plot d and e are the observed canopy height from NFI, while the Y-axes in plot d and e are the predicted canopy height by ALS-Sentinel based and GEDI-Sentinel based UNET model, respectively. The boxplots on the right side of those plots indicate the mean absolute errors in each height class. Plot f shows the MAE of different height classes for different comparisons.
