Fig. 4From: The estimation of crop emergence in potatoes by UAV RGB imageryConfusion matrix of the actual and predicted plant numbers, B—Background (a). Comparison of the estimated potato crop emergence rate by the UAV-based image analysis software with the manual counting. Black and red lines are the fitted linear line and the ideal 1:1 line, respectively (b). Comparison of total area of selected plots between ExG + Otsu segmentation method and manual segmentation (c)Back to article page