Deck 14: Compression

Question 1

The process of compression both reduces the bandwidth required to transmit the data and the amount of storage space required to store it.

Answer 1

True

Question 2

Run-length encoding usually used in graphics is an example of lossy compression.

Answer 2

False

Question 3

Video images generated by a camera are generally not suited for lossless compression techniques.

Answer 3

True

Question 4

Lossy compression techniques generally compress the data that comprise those parts of the image the human eye is more sensitive to, or that contain more critical image data.

Question 5

Fixed or constant bit rates (CBR) allow for consistent picture quality when the complexity of the image varies.

Question 6

Which of the following defines the standards for compressing moving images?

A) JPEG
B) Motion JPEG
C) MPEG
D) none of the above

Question 7

What form of compression uses spatial redundancy, or the repetition of data within the space of the frame, to define the data that can be discarded?

A) intraframe compression
B) interframe compression
C) linear compression
D) both C and D

Question 8

The compression scheme that compares the unchanging portions of successive frames from one frame to the other is known as

A) intraframe compression
B) interframe compression
C) linear compression
D) both C and D

Question 9

Which of the following defines the standards for compressing still images such as for graphics and photographs?

A) JPEG
B) Motion JPEG
C) MPEG
D) none of the above

Question 10

What method represents an early attempt to compress moving images by treating each image as a single still picture? It is used in non-linear editing systems.

A) JPEG
B) Motion JPEG
C) MPEG
D) none of the above