Understanding Bitmap Image Representation

What is a pixel in the context of a bitmapped graphic?

• The largest element of a graphic

• The smallest element of a graphic

• A type of computer program

• A type of digital camera

How is data stored in a computer?

• In letters and numbers

• In images and sounds

• In 1s and 0s

• In colours and shapes

How many bits per pixel are needed to represent a black-and-grey image?

• 1 bit

• 2 bits

• 4 bits

• 8 bits

In a one-bit image, what does a '0' typically represent?

• A white pixel

• A black pixel

• A red pixel

• A blue pixel

In a one-bit image, what does a '1' typically represent?

• A white pixel

• A black pixel

• A green pixel

• A yellow pixel

How many different colours can be represented with 2 bits per pixel?

• 2 colours

• 3 colours

• 4 colours

• 5 colours

What is usually the binary code for an white pixel in a one-bit image using two colours?

• 0

• 1

• 2

• 3

Usually, what is the binary code for a black pixel in a one-bit image using two colours?

• 0

• 1

• 2

• 3

What is required if an image needs more than two colours?

• More pixels

• More bits per pixel

• More cameras

• More memory

How many different bit patterns can be created with 3 bits per pixel?

• 4

• 6

• 8

• 10