6 - Colour Management Flashcards
What’s an open loop system
Uses profiles and profile connections space to deal with individual devices and their variability
What is a closed loop system
Does a compensation for each device to device translation and therefore works only with a small number of devices
List the 4 colour management systems
PCS
ICC profile
CMM
Rendering intents
What are the models for specifying colour
2 models :
- Device dependent
- Device independent
What is PCS
Profile connection space
What does PCS do
Standard colour space that provides connection btwn diff devices
Either CIE LAB or CIE XYZ colour space
What does ICC profile stand for
International colour consortium
Source profiles is also the
Input
Destination profile is also known as the
Output
What does CMM stand for
Colour management modules
What does CMM do?
Used profile info stored inside of ICC profile
Combine diff profiles
Input profile > PCS > output profile
For CMM, colour conversion is done by….
A lookup table created during the characterization process
Rendering intents involve a
Device gamut
Device gamuts are
The amount of colours that can be produced by a colouring device
Defined by ICC
What are the 4 methods for device gamuts
- Perceptual
- Absolute Colorimetic
- Relative colorimetric
- Saturation
