Data Representation: Images

Identify the type of graphic

• Bitmap image

• Vector graphic

Identify the type of graphic

• Vector graphic

• Bitmap image

Bitmap images are made up of........?

• Shapes and lines

• Pixels

Vector graphics are made up of........?

• Shapes and lines

• Pixels

Define what is meant by 'colour depth'

• The number of colours available per pixel, measured in bits.

• A small square that makes up a bitmap/raster image

Define what is meant by a 'pixel'

• The number of colours available per pixel, measured in bits.

• A small square that makes up a bitmap/raster image

A colour depth of 1 bit can represent .......colours

• 2

• 4

• 8

• 16

A colour depth of 2 bits can represent .......colours

• 2

• 4

• 8

• 16

A colour depth of 4 bits can represent .......colours

• 2

• 4

• 8

• 16

How are bitmap images stored on a computer?

• As PowerPoint files

• The image is made up of pixels, each pixel has a colour, which is stored as binary.