Fig. 15
From: From RGB camera to hyperspectral imaging: a breakthrough in Neolithic rock painting analysis

End-member spectra (average of 40 to 110 contiguous pixels) of the orange pigment (orange), the dark red pigment (light and dark red) and the anthropomorph pigment (dark and light blue) and typical spectrum of the rock wall (green) selected in the hyperspectral image of panel #3 presented in Fig. 13