Winter Street Scene
RawTherapee tooltip:
Chroma in CIECAM02 differs from Lab and RGB Chroma.
CIE stands for Commission Internationale de l'Eclairage (the International Commission on Illumination, based in Vienna) which produced its most recent Color Appearance Model in 2002.
from the Wikipedia entry on CIECAM02
The 6 "technically defined dimesions of color experience":
Brightness / Luminance is the subjective appearance of how bright an object appears given its surroundings and how it is illuminated.
Lightness is the subjective appearance of how light a color appears to be.
Colorfulness is the degree of difference between a color and grey.
Chroma is the colorfulness relative to the brightness of another color that appears white under similar viewing conditions. This allows for the fact that a surface of a given chroma displays increasing colorfulness as the level of illumination increases.
Saturation is the colorfulness of a color relative to its own brightness.
Hue is the degree to which a stimulus can be described as similar to or different from stimuli that are described as red, green, blue, and yellow, the so-called unique hues.
Winter Street Scene
RawTherapee tooltip:
Chroma in CIECAM02 differs from Lab and RGB Chroma.
CIE stands for Commission Internationale de l'Eclairage (the International Commission on Illumination, based in Vienna) which produced its most recent Color Appearance Model in 2002.
from the Wikipedia entry on CIECAM02
The 6 "technically defined dimesions of color experience":
Brightness / Luminance is the subjective appearance of how bright an object appears given its surroundings and how it is illuminated.
Lightness is the subjective appearance of how light a color appears to be.
Colorfulness is the degree of difference between a color and grey.
Chroma is the colorfulness relative to the brightness of another color that appears white under similar viewing conditions. This allows for the fact that a surface of a given chroma displays increasing colorfulness as the level of illumination increases.
Saturation is the colorfulness of a color relative to its own brightness.
Hue is the degree to which a stimulus can be described as similar to or different from stimuli that are described as red, green, blue, and yellow, the so-called unique hues.