Fig. 4From: Comparison of two novel methods for counting wheat ears in the field with terrestrial LiDARSchematic of the normal vector variance θ (p1, p2 are data points; the ellipses represent the fitted planes S1, S2; the arrows represent the corresponding normal vectors n1, n2 for the plane; θ1, θ2 are the corresponding differences in degrees between the normal vectors)Back to article page