3. Color Management
page 11
LaCie blue eye 2
User’s Manual
3.2.2. Device Profiles
Device profiles are the most important part of the color management puzzle, because without an ICC profile within your
image chain, you can’t implement color management.
Profiles serve three very important functions:
• They describe what color the RGB pixel values actually represent.
• They relate device-dependent RGB values to device-independent CIELAB/Yxy values.
• They contain data to convert between the RGB value that each device produces, and the CIELAB/Yxy number value.
Tech Note:
CIELAB refers to the Commission Internationale de l’Eclairage, and L= the “lightness”; A= the
position of a color on a red-green axis; and B= the position of a color on a yellow-blue axis.
Tech Note:
Yxy refers to a specification where a color is specified by its x and y co-ordinates on a
chromaticity diagram graph.
