Image Representation Lesson 2

The number of colours in a digital image

The number of bits used for each pixel in a digital image

The number of pixels in a digital image

How vibrant a colour is in a digital image

1 colour

2 colours - black & white

4 colours

32 colours

1 colour

2 colours - black & white

4 colours

32 colours

red, green, blue

red, yellow, blue

black, white, red

cyan, magenta, yellow

3

$2^3$ = 8

2 x 3 = 6

3 x 3 = 9

$2^n$

$n^2$

2 x n

n

Extra data that is added to an image which tells the computer how to display it.

Part of the image that helps to reduce the file size

A technique used to hide secret messages in an image

None of these

Resolution and Colour Depth

Location and Colour Depth

Resolution and Location

Location and Camera Type

To know when to move to the next row when creating an image from the binary values

To know how to display the colours for the image

To know how many pixels to read from the binary file in total

To allow the image to be printed

To know how many bits to read from the binary file for each pixel in the image

To know when to move on to the next row when displaying the image

To know where the light and dark patches are to adjust the colour balance

To allow you to zoom in and out of the file in an image editor