Color Management System

-Assigns specific color meaning to CMYK/ RGB Values

-Changes RGB/CMYK numbers that we send to different devices so they produce consistent colors 

what you see is what you get (myth)

No monitor will directly match your print 

Profile Connection Space

-Gives color unambiguous numerical value in CIE XYZ or CIE LAB (device independent) defines color as we actually see it

-Link between input and output spaces 

-describe relationship between a device's RGB or CMYK control signals  and the actual color those signals produce

-Define CIE LAB values that correspond to a given set of RGB or CMYK numbers

-signature of each device 

Color Management Module

The Engine, software that performs all the calculations needed to convert the RGB or CMYK values using the color data within the profiles

-Happens at PS level when sent to printer 

4 different ways to view out of gamut colors

adjusts white point from source space to the destination space, or white of the paper

in gamut colors reproduced true, but clips out of gamut colors, chooses closest printable hue 

simulates white of original with bluish tint

Doesn't take into account white of paper 

user can choose color profile and assigns that profile to the image

Does not travel device to device 

RGB #'s don't change when you assign different profiles, but the image changes

Changes meaning of RGB numbers, the actual colors those numbers represent 

User can choose profile at the time file is saved, tags image with color profile

Travels with image to different monitors

 Are made to maintain a color's appearance

Help with calculations and profile conversions

Contain info about how each device sees color

No communication between devices

Color Mgmt wouldn't be possible w/o them. 

Matrices are smaller

Output profiles, like Adobe RGB will be largest because they contain all the table data on rendering intents 

Act of changing a device's behavior

(Correcting Phosphors) to acheive desired state

Makes device behave consistently

so the profile it describes remains accurate 

Characterization-Signature of Device

Process by which we record a device's behavior into a profile

Doesn't change device's behavior,just records how it makes color and what colors it can and cannot reproduce

Software settings

(Auto-exposure/Auto-color)

Media Settings

(Ink/Paper)

Hardware Settings

(Brightness/Contrast) 

Input Profiles 

Camera/ Scanner

Output Spaces

Printer/Monitor

Sends back and forth to CMS through PCS to convert colors from RGB to CMYK prior to printing or going to an output space

In a Source Profile Conversions are:

In a Destination Profile Conversions Are:

In CMM Conversions Are:

Selected by User at Time of Conversion

or Are Set as a Default Setting in OS