Low Level Processing - Graphics

Question 1

How many bits are required to store 1 pixel of a black and white bit mapped graphic?

Answer 1

1

Question 2

What is each black and white bit mapped graphic made up of?

Answer 2

A grid of pixels

Question 3

What happens when you ‘blow up’ a bit mapped graphic?

Answer 3

It will look blocky/pixelated

Question 4

What is an advantage of using a bit mapped graphic? What is a disadvantage?

Answer 4

• An advantage is that you can edit the fine detail by zooming in at pixel level
• A disadvantage is that bit-mapped graphics take up a lot of storage as it requires millions of pixels and colour codes

Question 5

What are vector graphics made up of?

Answer 5

A number of shapes layered on top of another and these shapes are made up of a list of attributes

Question 6

What happens when you ‘blow up’ a vector graphic?

Answer 6

The edges of each shape stay smooth and clean

Question 7

What would a vector graphic be suitable to be used for?

Answer 7

From logos on small business cards to billboard signs as they don’t become blocky when they are scaled

Question 8

What is an advantage of using a vector graphic? What is a disadvantage?

Answer 8

• An advantage is that the file size is small as it’s only saving the objects and their attributes
• A disadvantage is that you cant zoom into fine detail at pixel level