Reminders on the basics of color (En)
The light + the eye = the color
Color definition Color is our perception of the different wavelengths that make up visible light...
Additive synthesis
The principle of additive color synthesis consists in striving to reconstitute, for the human eye...
Subtractive synthesis
In the subtractive synthesis everything is reversed with respect to the additive system. Cyan, m...
Standard and Observer illuminants
Generally speaking, the perception of the color of an object involves three elements: the light s...
Independent color modes: Lab, Lch, XYZ
There are several possibilities to code the color We saw previously the RGB and the CMYK which a...
ICC Profiles
An ICC ( International Color Consortium ) profile is a file with an .icc or .icm extension. Thi...
The Gamut
The gamut represents the 3-dimensional modeling of the colors of an ICC profile or an image. Usu...
Reference color spaces
As in any field, when it comes to calibration, we must always perform calibrations against a refe...
The dependent color modes: RGB, CMYK
In the previous chapter we compared the gamut of different RGB profiles and we saw that each of t...
The Delta E
The Delta E quantifies the difference in color between two samples This value is the difference ...
Rendering methods
It is not uncommon for images from capture devices such as digital cameras or scanners to produce...
Pantone color charts
Did you know that the Pantone® company, in those early days, manufactured varnishes to cover the ...