ITEC2110 Fall 2011 Test3, Dr. Jim Rowan
Images used in this test are found in the test3Fall2011 folder.
1) The image: jrowanFall2011image2.jpg is an example of what kind of filming
technique?
2) The computer is generating the entire scene in the image: jrowanFall2011image4.jpg.
This is a good example of what type of computer technique?
3) Which category of video compression takes advantage of the fact that from frame to
frame a video may not change all that much?
4) Which category of video compression does not take advantage of the fact that from
frame to frame a video may not change all that much?
5) What is the name of the video artifact seen in: jrowanFall2011image1.jpg?
6) What scan technique is one of the causes of the artifact seen in:
jrowanFall2011image1.jpg?
7) What is the other scan technique that would not cause the artifact seen in:
jrowanFall2011image1.jpg?
8) What, in addition to the scan technique, is needed to cause the artifact seen in:
jrowanFall2011image1.jpg?
9) Digital broadcast TV recently replaced Analog broadcast TV. Give one advantage of
digital broadcast TV.
10) The fusion rate for humans is around 40 frames per second. What does “fusion rate”
mean?
11) Describe the basic problem encountered when converting motion picture film to
video using any of the Telecine processes?
12) What is the difference between an asymmetric codec and a symmetric codec?
13) The choice of the codec used to compress and decompress a video affects that video
in a number of different ways. Give one of these.
14) A webcam is connected to your computer using an analog connection while the
MiniDV cameras are connected using a digital connection. What is the biggest
disadvantage of the webcam’s analog connection?
15) One approach to reducing the size of the video data stream is to use chrominance subsampling. Describe chrominance subsampling.
16) Looking at jrowanFall2011image5.jpg which technique uses image differencing
alone?
17) Looking at jrowanFall2011image5.jpg which technique results in the smallest
compressed file?
18) Differencing and Vectoring are two forms of what category of video compression.
19) Looking at jrowanFall2011image5.jpg the frame capture sequence is shown for the
three different forms of mpeg video compression. In the third, most complex compression
technique, what frame(s) are needed before frame 9 can be reconstructed?
20) When generating the frames that fall between the key frames in an animation
sequence which form of interpolation would more accurately show the motion of an
object under the affect of gravity?
21) Which two animation techniques require the animator to create shadows individually,
frame by frame?
22) In 1937 Walt Disney brought Snow White to the screen using what form of
animation?
23) In the 1960’s Terry Gilliam of Monty Python’s Flying Circus fame introduced the TV
audience to what form of animation?
24) If an animator decides to use 3D computer animation techniques rather than 2D
animation techniques, what additional thing(s) would they have to manage?
25) Describe what the “cell” is in the term “cell animation.”