Michelsoncontrast
Michelson contrast is a luminance-based measure of the contrast between two regions of a visual scene. It is defined for two luminances, Imax and Imin, as C = (Imax − Imin) / (Imax + Imin). The value ranges from 0 to 1 (often reported as a percentage by multiplying by 100). This metric is especially suited to patterns with periodic or edge-like transitions, such as sine-wave luminance gratings or two-tone images, where Imax and Imin correspond to the brightest and darkest levels.
In practice, Michelson contrast is used in vision science and display engineering to quantify pattern visibility,
Limitations of the measure include its assumption of two discrete luminance levels and its lack of direct
The concept is named after Albert A. Michelson, reflecting its historical use in studies of optical and