ITEC2110 Summer 2012 Test 3, Dr. Jim Rowan
Images used in this test are found in the folder named: test3Images.
Open renderedImages.jpg and wireframeImages.jpg using Preview. You will find a series
of rendered images showing a red sphere that has been pierced by a blue cylinder and
their corresponding wireframes.
1) If you start with the objects seen in Img1A.jpg (and Wireframe1A.jpg) which Boolean
operation would result in the object seen in Wireframe1B.jpg?
2) If you start with the objects seen in Img1A.jpg (and Wireframe1A.jpg) which Boolean
operation would result in the object seen in Wireframe3.jpg?
3) If you start with the objects seen in Img1A.jpg and Wireframe1A.jpg which Boolean
operation would result in the object seen in Wireframe4.jpg?
4)- What kind of model building technique does Blender use?
5) The image named image5.jpg could be best described as an example of what computer
based technique?
6) If an animator wants to make his 3D model move like a human what technique would
be his best choice?
7) Digital TV recently replaced Analog broadcast TV. Give one reason for this change.
8) Tell me something relevant about the fusion rate for humans.
9) Video images can be interlaced or progressive scan. Which one can result in the
artifact seen in image1.jpg?
10) What are the specific circumstances under which #9 above can occur?
11) Looking at image2.jpg and image3.jpg, which one is clearly an example of interlaced
scan?
12) What is an analog connection’s biggest disadvantage over a digital connection?
13) One approach to reducing the size of the video data stream is to save the color
information less frequently than the illumination information. What is this technique
called?
14) Describe the basic problem encountered when converting motion picture film to
video using any of the Telecine processes?
15) One category of video compression compresses each captured frame as a completely
specified image. What is this kind of compression called?
16) Which of the two categories of video compression in its simplest form calculates
frame differences and in its more complex form does vectoring?
17) Looking at image4.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 5 can be reconstructed?
18) Looking at image4.jpg which technique uses image differencing alone?
19) Looking at image4.jpg which technique uses spatial compression alone?
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) What is the difference between an asymmetric codec and a symmetric codec?
22) 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 other than video quality.
23) Which two animation techniques do not require the animator to create shadows
individually, frame by frame?
24) In 1937 Walt Disney brought Snow White to the screen using what form of
animation?
25) If an animator decides to use 2D computer animation techniques rather than 3D
animation techniques, give one thing that they would have to produce, frame by frame,
that would be automatically produced had they chosen 3D.