Image Storage

Question 1

How are images stored in binary

Answer 1

Images are stored as a series of pixels the colour of each pixel is represented by a binary code. By increasing the number of bits the greater the range of colours.

Question 2

What is the impact of increasing colour depth on an image file?(2)

Answer 2

Increasing the colour depth will increase the number of bits used for each pixel which will increase the range of colours. However this will also increase the file size.

Question 3

What is the impact of increasing resolution on an image file?(2)

Answer 3

Resolution increase will increase the number of pixels in an image. This will increase the quality and level of detail in an image. However the file size will inc.

Question 4

How do you calculate the size of an image file

Answer 4

Image file size = colour depth x image height in pixels x image width in pixels

Question 5

What is metadata

Answer 5

Data about data stored in an image file

Question 6

What might metadata store about an image?(3)

Answer 6

Height(1) width(1) colour depth(1) resolution(1) author(1)