Fig. 4
From: Accelerating leaf area measurement using a volumetric approach
Results of Pile Analysis, i.e., the relashionship between optical and volumetric areas of the leaf piles. A Correlation between the results of the two methods, including the volume of midrib; and B excluding the volume of midrib. C Bland–Altman plot of pile leaf area measured using the two methods, including the volume of midrib; and D excluding the volume of midrib. NRMSE: normalized root mean square error (calculated by dividing the RMSE by the range of the optical values). SD, standard deviation. Each sample was consisted of 7 leaves (or pieces of leaves) chosen randomly from the possible combinations of the 14 measured pieces (without replacement)