ITEC2110 Spring 2011 Test 2, Dr. Jim Rowan
1)- Opening convolutionProblem1Spring2011.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 convolutionProblem2Spring2011.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 renderedImages.tiff and wireframeImages.tiff 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.
If the order of selection matters, state the order of selection.
3) 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?
4) If you start with the objects seen in Img1A.jpg and Wireframe1A.jpg which Boolean
operation would result in the object seen in Wireframe2.jpg?
5) 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?
6) 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?
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)- 4x3-4colorRLEimage.tiff is a small (4 X 3 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)- 4x3-6colorTableEncodingImage.tiff is a small (4 X 3) 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)- 4x3-6colorUncompressed24bitRGB.tiff is a small (4 X 3) 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 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, green 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)- Blue is what you get when you remove what color (or colors) from white?
21)- Yellow is what you get when you mix what colors of light?
22)- Holding a ball painted with pure green 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 red, blue and green light. What color does the ball appear to be in this room?
24)- How many different colors can 24 bit color can produce?
25)- Mixing red and green light results in what color?