ITEC2110 Summer 2011 Test 2, Dr. Jim Rowan
1)- Opening convolutionProblem1Summer2011.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 convolutionProblem2Summer2011.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.
Open the folder called test2Images using Preview. You will find a series of images
labeled image1.tiff through image9.tiff along with some other images. Image1.tiff shows
all of the objects together in one image that are shown individually in images image2.tiff
through image9.tiff.
3) Of the objects in image2.tiff through image9.tiff which ones(s) would be the result of
taking the Boolean operation intersection?
4) Of the objects in image2.tiff through image9.tiff which one(s) would be the result of
taking the Boolean operation union?
5) If you start with the objects seen in image2.tiff, which Boolean operation would result
in the object seen in image4.tiff?
6) If you start with the objects seen in image2.tiff, which Boolean operation would result
in the object seen in image9.tiff?
7)- A given vector is defined by the two points, (2.2, 0.6) and (4.2, 2). What is the
displacement of this vector?
8)- 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?
9)- 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. To make this jagged line look more
smooth what can be done?
10)- What kind of model building technique does Blender use?
11)- 4x4-4colorRLEimage.tiff (found in the section2Images folder) is a (4 X 4 pixel)
image. The 24 bit RGB color codes are shown below the image. Allowing one byte for
the “count” portion of the encoding, write out the string of bytes that would result from
a run length encoding of that image.
12)- 4x4-6colorTableEncodingImage.tiff (found in the section2Images folder) is a (4 X 4)
pixel image. The 24 bit RGB color codes are shown below the image.
Write out the bitmapped portion of a table encoding of this image using the minimum
number of bits needed to encode these 6 colors.
13)- Referring to #12 above, how many bytes in length would this file be if you include
both the color table and the bitmap but ignoring the header?
14)- 4x4-5color24BitRGB-Image.tiff is a small (4 X 4) pixel image. The 24 bit RGB
color codes are shown below the image. If this were to be stored as an uncompressed, 24
bit RGB image, how many bytes would it be in length?
15)- Which type of image, bitmapped or vector graphic, is not affected by the complexity
of the image?
16)- Holding a ball that is painted black, you enter a room that is lit with equal amounts
of red and blue colored light. What color does the ball appear to be in this room?
17)- A vector is defined by two characteristics. What are they?
18)- What is the process called that allows you to use only black ink but produce 5
different shades of grey from white to black?
19)- What is it about the human eye that the tri-stimulus model is derived from?
20)- Red is what you get when you remove what color (or colors) from white?
21)- Cyan is what you get when you mix what colors of light?
22)- Holding a ball painted with pure blue paint you enter a room that is lit with cyan
colored light. What color does the ball appear to be in this room?
23)- Holding a ball painted with white paint you enter a room that is lit with equal
amounts of blue and green light. What color does the ball appear to be in this room?
24)- How many different colors can 16 bit color produce?
25)- Mixing red and blue light results in what color?