Table 5 Fisher discriminant coefficient and constant of Gemdialogue color blocks of imitated jadeite-jade green
From: Feasibility study on color evaluation of jadeite based on GemDialogue color chip images
1 | 2 | 3 | 4 | 5 | 6 | 7 | |
|---|---|---|---|---|---|---|---|
Fancy intense | Fancy dark | Fancy vivid | Fancy light | Fancy | Fancy deep | Very light | |
L* | 1.525 | 1.170 | 1.374 | 1.840 | 1.248 | 1.585 | 1.099 |
a* | − 0.835 | − 0.856 | − 1.519 | − 0.270 | − 0.459 | − 0.892 | − 0.163 |
b* | 0.792 | − 0.038 | 0.014 | 0.162 | 0.369 | 0.137 | 0.055 |
Constant | − 73.779 | − 40.689 | − 78.794 | − 64.432 | − 38.369 | − 64.607 | − 23.996 |