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Figure 5 | Chemistry Central Journal

Figure 5

From: Characterization of black pigment used in 30 BC fresco wall paint using instrumental methods and chemometry

Figure 5

(a): PCA representation of the CIELab colorimetric data of all standard frescoes fabricated using standard black pigments and unknown black pigment of old roman fresco (i.e. black-studiolo). (b): HCA representation of CIELab colorimetric data of all standard frescoes fabricated using standard black pigments and unknown black pigment of old roman fresco (i.e. black-studiolo).

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BMC Chemistry

ISSN: 2661-801X

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