Brightness (value) sequence for the Vita Lumin Classic shade guide reassessed.
The purpose of this study was to locate the 16 shade tabs from the Vita Lumin 'Classic' shade guide within the quantitative Luminosity, R, G and B scales (0-255 scales) using Photoshop software. A new value order arranged according to the Photoshop scale demonstrated a more linear relationship between the 16 shade tabs than the order given by the manufacturer. A Brightness Index representing the percentage difference in value between pairs of reordered shade tabs is suggested as a more realistic determinant of change in shade tab value.
Lee
Kit-Yee
KY
Paramount Mansion, Hurghom, Kowloon, Hong Kong. lennislee@gmail.com
Setchell
Derrick
D
Stokes
Alastair
A
Moles
David R
DR
D007091:Image Processing, Computer-Assisted; D008027:Light; D017797:Prosthesis Coloring / Q000592:standards*; D012015:Reference Standards; D012044:Regression Analysis