Fig. 8
Characterization of the segmentation performance of the RGB image processing pipeline from 18 randomly selected images of the A. thaliana Trial A dataset. A Linear regression of projected plant area vs. ground truth plant area. The regression line is colored black, while the angle bisector line is drawn two-dashed. Gray indicates confidence interval limits at α = 0.95. Adj R2 denotes the coefficient of determination adjusted according to Yin and Fan [27], while Pslope and Pinter represent p-values of the coefficients for the intercept and slope determined by simple T-test. MAE and RMSE indicate the mean absolute error and the root mean square error of the projected plant area. B Relative error of plant area projection for different acquisition time points (23, 3 and 7 o’clock represented night conditions) calculated from 18 randomly selected images of the A. thaliana Trial A dataset. First manual annotated image was identified as an outlier marked as red asterisk