Image Representation Lesson 2

Image Representation Lesson 2

9th Grade

10 Qs

quiz-placeholder

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Image Representation Lesson 2

Image Representation Lesson 2

Assessment

Quiz

Computers

9th Grade

Practice Problem

Medium

Created by

Dave Gwilt

Used 11+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does colour depth mean?

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

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

1 colour

2 colours - black & white

4 colours

32 colours

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many colours can you have with a colour depth of 2?

1 colour

2 colours - black & white

4 colours

32 colours

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If you have 3 bits for each pixel, what are the 3 colours that each pixel is made up from?

red, green, blue

red, yellow, blue

black, white, red

cyan, magenta, yellow

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many colours can you have with 3 bits per pixel?

3

232^3 = 8

2 x 3 = 6

3 x 3 = 9

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In general, how many colours can you have with a colour depth of n (i.e. n bits per pixel)

2n2^n

n2n^2

2 x n

n

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is metadata?

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

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