Fig. 4From: RGB image-based method for phenotyping rust disease progress in pea leaves using RBar plots showing the effect of the different indices on accuracy (A) and RMSE (B) when visual method and image-based method are compared by each parameter studied from images at 60% of the full resolution. Different letters above the boxes indicate statistically significant differences at p = 0.05 according to the Tukey HSD test for n = 600Back to article page