Fig. 2

Detection of best side view images based on plant exemplified in Fig. 1. a Segmented and RGB (inset) top view images, b first robust major axis regression for identification of the direction of the plane carrying most leaves (green line), useful pixels group for this calculation (white pixels) and useless pixels group (blue pixels); useful and non-useful side view angles (green and red arrows, respectively), c rejected pixels after second robust reduced major axis regression on useless pixels group (yellow pixels), and interesting and non-useful side view angles (green and red arrows, respectively), d selected side view images containing most information