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Figure 4 | Heritage Science

Figure 4

From: Examination of historical paintings by state-of-the-art hyperspectral imaging methods: from scanning infra-red spectroscopy to computed X-ray laminography

Figure 4

Mockup painting used for evaluating CXL. A: Visual photograph; B: detail of A, showing a stroke of lead white covering the red surface of the painting; C: 3D rendering of CXL data, showing the reconstructed volume; D: series of virtual laminographic sections a-d, parallel to the wood/paint surface at the depth indicated in E: (a) superficial lead white, (b) pigment particles in the red paint; (c) spherical voids in the ground layer; (d) cells in the wood support; panel (e) shows the corresponding radiography of the volume shown in C; E, F: virtual cross sections obtained by applying a maximum (E) or a minimum (F) filter of 750 images, oriented perpendicular to the axis of the wood cells. Adapted from [32].

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