Image Representation Lesson 1

Data Representation Lesson 1

Multiple Choice

What base is Denary?

• 2

• 10

• 16

Multiple Choice

What base is Binary?

• 2

• 10

• 16

Multiple Choice

What is a pixel?

• A tiny square of colour

• A tiny piece of music

• A tiny circle of colour

• A tiny triangle of colour

Multiple Choice

(Fill in the blank to complete the sentence) Tiny squares called ..... are the building blocks of all digital images.

• elements

• squares

• pixars

• pixels

Multiple Choice

How many colours can you have with a colour depth of 1?

• 1 colour

• 2 colours - black & white

• 4 colours

• 32 colours

Multiple Choice

When we have a 'one-bit' colour, which are the only two binary numbers that are possibilities?

• 00 and 11
• 000 and 111
• 0 and 1
• 0000 and 1111

Multiple Choice

How many combinations are there for a '2 bit' colour?

• 8
• 4
• 16
• 32

Multiple Choice

How many bits make up a byte?

• 16

• 4

• 8

• 2

Multiple Choice

Most graphic formats create many colours from:

• Red, green, blue.
• Red, pink, yellow.
• Red, white, blue.
• Black, white, green.

Multiple Choice

Which 'bit' image would give the best picture quality?

• 24
• 4
• 8
• 2

Multiple Choice

How do we represent more colours other than black and white in our images?

• We use more bits per pixel

• We stop using binary?

• We just type the colour in that we want

Multiple Choice

Denary is numbers humans use in every day life

• True

• False

Multiple Choice

Quality of an image depends on:

• Resolution

• Metadata

• Screen size

• Computer's speed

Multiple Choice

A bit is smaller than a byte.

• True

• False

Multiple Choice

The higher the colour depth, the _________the image file size.

• Smaller
• Larger

Multiple Choice

The colour of a pixel can be stored as a _______ number

• Unicode
• Hex
• Binary
• ASCII

Multiple Choice

Define the term "Colour Depth"

• The number of bits used per pixel (BPP).

• The number of colours used in an image.

• The number of pixels per inch (PPI).

• The total number of pixels in an image.

Multiple Choice

How many colours can be used for each pixel if the colour depth is 4 bit?

• 4 colours

• 5 colours

• 15 colours

• 16 colours