Fig. 12From: Appearance-based evaluation of varnish removal methods in gilded surfacesa Contrast and bDOI gloss values obtained from BRDF coefficients modelled for oil gilding (left) and water gilding (right) for unvarnished (blue), varnished (orange), n1 (yellow), n2 (purple), n3 (green), and n4 (maroon)Back to article page