Table 2 Mean differences of lightness (∆L’), chroma (∆C’), hue (∆H’) and color (∆E00) along the cleaning processes for the white (wh), ochre (oc) and brown (br) tesserae according to the standard CIEDE2000
Tesserae | (n) | ∆\(\overline{\text{L}^{\prime}}\) | ∆\(\overline{\text{C}^{\prime}}\) | ∆\(\overline{\text{H}^{\prime}}\) | ∆\(\overline{{\text{E}}_{00}}\) |
|---|---|---|---|---|---|
White (wh) | 1 ⟹ (m1-m0) | 2.52 | - 3.21 | − 1.99 | 4.63 |
2 ⟹ (m2-m0) | 5.16 | - 6.93 | − 1.63 | 7.63 | |
Ochre (oc) | 1 ⟹ (m1-m0) | − 2.81 | 3.24 | − 6.63 | 7.57 |
2 ⟹ (m2-m0) | − 5.29 | 7.67 | − 9.91 | 11.70 | |
Brown (br) | 1 ⟹ (m1-m0) | − 3.51 | 1.81 | − 9.61 | 11.66 |
2 ⟹ (m2-m0) | − 5.08 | 1.50 | − 13.48 | 15.03 |