3rd Class - Chapter 2:

Working with Colour Modes:

COLOUR MODE = COLOUR SPACE = COLOUR MODEL

Visible Spectrum - all colours visible to human eye

Gamut - range of colours that can be produced by a process or device.

RGB Mode:

Red, Green, Blue

Computer Monitor

 Additive (R+G+B = New Colour)

CMYK Mode:

Cyan, Magenta, Yellow, Black

Printing Inks

Subtractive (C-M-Y-K = New Colour)

Values for each Channel:

-(0,0,0) is Black

-(255,255,255) is White

-(255,0,0) is Red

-(0,255,0) is Green

-(0,0,255) is Blue

-(255,255,0) is Yellow

-(0,255,255) is Cyan

-(255,0,255) is Magenta

Indexed Image:

-Reduce the file size while speeding up display refresh

-Saves and shows the reference of the original image only

-In order to save computer memory and file storage

Grayscale Image:

-Grayscale image is 8 bits

-Grayscale image is Black white and different shades of gray

Bitmap Image:

-Bitmap Image is 2 bits

-Bitmap Image only shades of black and white

-Digital image composed of a matrix of dots