ITEC2110 Fall 2011 Test 2, Dr. Jim Rowan
1)- Opening Fall2011ConvolutionCalculationV1.ppt will reveal a black and white
image, a section of the image showing pixel values, a convolution mask and a resulting
image matrix. Calculate the 3 pixels marked X1, X2, and X3 on the resulting image
matrix.
2)- Opening Fall2011ConvolutionCalculationV2.ppt will reveal a black and white
image, a section of the image showing pixel values, a convolution mask and a resulting
image matrix. Calculate the 3 pixels marked X1, X2, and X3 on the resulting image
matrix.
3)- imageEncoding#2.ppt is a 3 X 4 pixel image. The 6 24-bit RGB color codes are
shown to the right of the image. Write out the string of bytes that would result from a
run length encoding of that image.
4)- imageEncoding#3.ppt is a 4 X 3 pixel image. The 6 24-bit RGB color codes are
shown to the right of the image. Write out the 3 X 4 bitmapped portion of a table
encoding of that image.
5)- imageEncoding#3.ppt is a 4 X 3 pixel image. The 6 24-bit RGB color codes are
shown to the right of the image. What would be the file length of this file excluding the
header?
6)- imageEncoding#1.ppt is a 3 X 4 pixel image. The 6 24-bit RGB color codes are
shown to the right of the image. Excluding the header how many bytes long would this
uncompressed file be?
Open the images found in the images folder using Preview. You will find a series of
images showing a blue cube that has been pierced by a green cylinder.
booleanSetup1.png shows the two objects before they were moved together and
booleanSetup2.png shows the two objects after they were moved together.
7) Which image shows definitively the union of the cube and cylinder?
8) Which image shows the intersection of the two objects?
9) Which image shows the difference of the cube and the cylinder?
10) Which image shows the difference of the cylinder and the cube?
11)- A given vector is defined by the two points, (2.0, 0.6) and (-1.0, 2). What is the
displacement of this vector?
12)- JPEG compression uses the fact that humans don’t see high frequency changes as
well as low frequency changes. What does JPEG do with this information to reduce the
size of the file?
13)- Displaying a vector graphic on a computer display like the ones we have in the lab is
accomplished by converting the vector graphic to a bitmapped graphic. Invariably the
result will be a jagged line rather than a smooth one. What is this jagged line called?
14)- What kind of model building technique does Blender use?
15)- Which type of image, bitmapped or vector graphic, is affected by the complexity of
the image?
16)- Holding a ball that is painted white, you enter a room that is lit with equal amounts
of red, green and blue colored light. What color does the ball appear to be in this room?
17)- Holding a ball that is painted white, you enter a room that is lit with equal amounts
of red and green colored light. What color does the ball appear to be in this room?
18)- A vector is defined by two characteristics. What are they?
19)- What is the process called that allows you to produce 5 different shades of grey from
black ink on white paper?
20)- What is it about the human eye that the tri-stimulus model is derived from?
21)- Under what circumstances is a table encoded image lossy?
22)- You have an image that you want to encode as a table encoded image but you want it
to be limited to 256 different colors. The image has 500 different colors. What can you do
to solve this dilemma?
23)- How many different colors can 16 bit RGB produce?
24)- In 16 bit RGB red and blue get 5 bits but green gets one additional bit. Why?
25)- Displaying a vector graphic on a computer display like the ones we have in the lab is
accomplished by converting the vector graphic to a bitmapped graphic. Invariably the
result will be a jagged line rather than a smooth one. What technique is used to make this
jagged line look smoother?