Image Representation

Question 1

What is the term for a single point in an image?

Answer 1

a pixel

Question 2

Resolution is the number of what per inch?

Answer 2

pixels

Question 3

What is the name for the method of compression where images are represented as groups of pixels (e.g. 3 red, 5 blue, 6 orange) rather than individual pixels (red,red,red,blue,blue,blue,blue,blue,orange,orange…)?

Answer 3

Lossless compression

Question 4

Name an example of a file format that uses lossless compression

Answer 4

Png

Question 5

Name an example of a file format that uses lossy compression

Answer 5

Jpg