Figure 3
From: Polarimetric observables for the enhanced visualization of plant diseases
Pixel profile comparison for Medicago sativa and Olea europaea. (a) Intensity image at 625 nm of the underside part of M. sativa sample and its corresponding pixel profile, (b) polarimetric purity index P2 and its corresponding pixel profile, (c) intensity image at 625 nm of the underside part of O. europaea sample and the corresponding healthy-necrotic-chlorotic transition pixel profile, and (d) polarimetric purity index P3 and its corresponding pixel profile. The vertical yellow lines on polarimetric images indicate the plotted pixel profile segments. The squared numeric labels for M00, P2 and P3 indicate their respective highest and lowest pixel values within the inspected pixel regions. Red-dotted horizontal lines on plots indicate the diameter of the two chlorotic spots of M. sativa and width measurements for chlorotic spot and necrotic ring of O. europaea.
