GB/T 7921-2008 "Uniform color space and color difference formula" specifies two widely used uniform color spaces (CIELAB and CIELUV) and their corresponding color difference formulas (such as ΔE*ab) in color evaluation. It provides an internationally recognized mathematical model for quantitatively calculating and evaluating the visual differences between two colors.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | A20 | ICS | 17.180.20 |
| Release Date | 2008-06-26 00:00:00 | Implementation Date | 2009-03-01 00:00:00 |
