All colorimetric terminology has a basis, usually related to light and perception, but some terms can be a little arbitrary.

The “E” in delta E or delta E* is derived from “Empfindung“, the German word for sensation. Delta E means a “difference in sensation” for any delta E-type metric, CIE or Hunter.


E是来自于德语:Empfindung 是感觉、知觉的意思。

Delta E 就是“感觉上的差异”