Fig. 6.

Transferring the proposed framework from Denmark to Finland. A) Tree count prediction in Finland derived from aerial images using the fine-tuned model. Locations of the evaluations in B), D), and E) are shown in diamond shapes. Locations of the tree count evaluation against NFI field data are shown in dots. B) Large-scale examples of individual tree crown segmentation colored by height prediction. C) Examples of the predicted tree counts evaluated against the NFI field plots (12.62-m radius). The NFI tree counts represent the number of trees taller than 1.3 m measured in each plot on the field. D) Detailed examples for individual tree counting, crown segmentation, and height prediction. E) Comparison of predicted tree heights and reference tree heights, with the regression line in solid and the identity line in dotted. Absolute errors for the evaluation of individual tree height prediction.