Images, Sound and Compression (1.2)

Question 1

What is colour depth

Answer 1

• number of bits used to represent each colour

Question 2

What is pixel resolution

Answer 2

• total pixels in the image

Question 3

What is lossy compression

Answer 3

• compresses the file size by a considerable amount, so it takes up much less storage space, however the change is irreversible and the quality of the data is lowered significantly

Question 4

What is Lossless compression

Answer 4

• compresses the file size by a smaller amount so file may not be as fast to transfer but the changes are reversible so the original quality of the image is not affected when original file is obtained
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