Figure 4From: Hyperspectral optical imaging of two different species of lepidoptera Color coordinates generated from reflectance spectra at each pixel position. (a) CIE-1931 chromaticity diagram. (b) CIELAB color space. (c) Polar graph of the chroma C* against the hue angle h ab . In all cases, data points show those coordinates of the M. didius (blue) and P. palinurus (green). Only a fraction of data is represented.Back to article page