OCR Computer Science - 2.6 - Images and Data Representation

The following is true about metadata:

• It is data about data.
• It is corrupted data.
• It significantly increases file sizes.

Metadata doesn't contain the following:

• File name.
• Print dimensions.
• Colour depth.
• Camera settings for when the picture was taken.

The following is often stored in metadata:

• All of these.
• Colour depth
• Height and Width of an image
• Compression algorithm applied.

How many colours can be represented with a 4 bit colour depth? (7-9)

• 2
• 4
• 16
• 256

Which of the following is not stored as Metadata about an image? (6-9)

• Height
• Colour Depth
• Resolution
• Number of people in the image

What three colours are used to produce a broad array of colours in a computer system? (1-4)

• Green, Red, Orange
• Red, Green, Blue
• Yellow, Green, Red

How many colours are available for an image where the colour depth is 1?

• 2

• 1

• 3

• 4

How many colours are available for an image where the colour depth is 2?

• 2

• 4

• 3

• 8

How many colours are available for an image where the colour depth is 4?

• 16

• 32

• 4

• 8

What information is stored as metadata?

• width, height, colour depth, colour index

• height, colour depth, colour index, bit ratios

• hex to binary lookup, width, colour table, bit management

• pixel count, colour depth, colour index, bit ratios