Fig. 3

Regression plots illustrating the prediction power of CNN a, b and direct X-ray images transformation (XRT; c, d) models for kernel weight (a, c, solid circle) and shell weight (b, d, solid square) parameters. Graphs visualize the relation of the 10% of the dataset (“test set”) to the actual gravimetrically estimated ground truth which was used to infer the statistical metrics. The expanded statistical metrics of this dataset is summarized in Table 1b. Kernel weight (solid circle); Shell weight (solid square); Solid line (—) depicts the linear regression between the ground truth observations and predictions; Dashed line (---) indicates the 1:1 relation