Fig. 5
From: Improved spectral imaging microscopy for cultural heritage through oblique illumination
a Photograph of Pablo Picasso’s La Miséreuse accroupie (1902) and its corresponding X-radiograph rotated by 90° to reveal an underlying landscape painting (image courtesy of the Art Gallery of Ontario). The cross section was removed from the upper right tacking edge, indicated by the white arrow in a, imaged and decomposed into the b minimum projection, c surface shape components, and d the maximum-minimum. e–h Representative spectra are compared to references from each of the non-white paint layers