Lightness
Videos
Lightness is a visual perception of the luminance of an object. It is often judged relative to a similarly lit object. In colorimetry and color appearance models, lightness is a prediction of how an i
Fig. 1a. Color photograph (sRGB color space).
Fig. 1b. CIELAB L* (further transformed back to sRGB for consistent display).
Fig. 1c. Rec. 601 luma Y′.
Fig. 1d. Component average: "intensity" I.
Luminance
Videos
Luminance is a photometric measure of the luminous intensity per unit area of light travelling in a given direction. It describes the amount of light that passes through, is emitted from, or is reflec
Lightness
…Lightness is a visual perception of the luminance ( L ) of an object. It is often judged relative to a similarly lit object. In colorimetry and color appearance models, lightness is a prediction of how…
A tea light-type candle, imaged with a luminance camera; false colors indicate luminance levels per the bar on the right (cd/m2)