Assessment of multispectral and hyperspectral imaging systems for digitisation of a Russian icon

Heritage Science

Table 2 Colour coordinates of the sample points and analysis of errors between reconstruction and spectrophotometer reference data

	Red-robe	Yellow-robe	Green-shirt	Blue-vest	Brown-shadow	Skin	Gold
L*	37.34	54.21	51.53	37.13	21.24	61.67	33.50
a*	46.02	22.72	−22.68	−20.90	17.72	19.11	3.46
b*	16.21	51.21	20.92	−23.45	13.86	34.30	20.44
France
RMSE	0.0376	0.0108	0.0073	0.0108	0.0051	0.0151	0.0742
\(\Delta E_{ab}^{*}\)	4.53	4.79	3.13	3.63	2.12	3.12	14.91
Italy
RMSE	0.0457	0.0160	0.0077	0.0073	0.0068	0.0103	0.0238
\(\Delta E_{ab}^{*}\)	5.56	1.90	2.86	2.62	2.79	1.84	6.82
Poland
RMSE	0.0548	0.0142	0.0094	0.0059	0.0085	0.0213	0.0370
\(\Delta E_{ab}^{*}\)	5.88	3.59	3.60	1.51	6.33	2.19	7.71
UK
RMSE	0.0236	0.0110	0.0109	0.0154	0.0068	0.0185	0.0287
\(\Delta E_{ab}^{*}\)	11.05	0.98	4.64	4.13	1.93	2.92	7.41