Digital Imaging

Question 1

what is a bitmap?

Answer 1

Bitmap graphics are made up of lots of pixels and stores information about each individual pixel in the image

Question 2

what is a vector?

Answer 2

Vectors graphics store information about the geometrical objects-not the image itself

Question 3

Give three advantages of vectors over bitmap

Answer 3

The memory size is smaller, they are easier to transform(there will be no loss of quality once they are resized) and they have quicker download times as they are smaller.

Question 4

what happens when a bitmap is resized?

Answer 4

they lose quality

Question 5

give a use for JPEG

Answer 5

Putting images on the internet

Question 6

Give an advantage and disadvantage of JPEG

Answer 6

An advantage is the file size is smaller as it is compressed. Yet, this reduces image quality

Question 7

Define composite patterning

Answer 7

they repeat certain patterns over and over again; its useful for backgrounds