Implicit in these definitions of "distance" is the notion of "Just Noticeable Distance" (JND). This represents the distance between colors where a human can perceive different colors. Humans are more sensitive to certain colors than others, which different deltaE metrics correct for with varying degrees of sophistication.
The literature often mentions 1 as the minimum distance for visual differentiation, but more recent studies (Mahy 1994) peg JND at 2.3
The delta-E notation comes from the German word for "Sensation" (Empfindung).
Functions for calculating the "distance" between colors.
Functions for calculating the "distance" between colors.
Implicit in these definitions of "distance" is the notion of "Just Noticeable Distance" (JND). This represents the distance between colors where a human can perceive different colors. Humans are more sensitive to certain colors than others, which different deltaE metrics correct for with varying degrees of sophistication.
The literature often mentions 1 as the minimum distance for visual differentiation, but more recent studies (Mahy 1994) peg JND at 2.3
The delta-E notation comes from the German word for "Sensation" (Empfindung).
https://en.wikipedia.org/wiki/Color_difference
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