ITEC2110 Spring 2012 Test 2, Dr. Jim Rowan
1)- Double click “convolution1.ppt” Calculate the 3 pixels marked X1, X2, and X3 on the
resulting image matrix.
2)- Double click “convolution2.ppt” Calculate the 3 pixels marked X1, X2, and X3 on the
resulting image matrix.
Drag the folder named “testImages” on Preview to open all the images.
Images 1- and 2- show one green sphere and one blue sphere.
3) What Boolean operation would change the objects seen in image 2- to image 3-?
4) What Boolean operation would change the objects seen in image 2- to those seen in
both images 4- and 5-?
5) Which image shows the resulting difference when subtracting the blue sphere from the
green sphere?
6) Which image shows the resulting difference when subtracting the green sphere from
the blue sphere?
7)- A given vector is defined by the two points, (1.1, -1.5) and (2.8, 3.0). What is the
displacement of this vector?
8)- What is it about human vision that JPEG image compression takes advantage of in
order to compress a 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. What term is applied to this jagged
line?
10)- What kind of model building technique does Blender use?
11)- encodingImage.jpg is a small (4 X 3 pixel) image. The 24 bit RGB color codes are
as follows:
Cyan: 120, 248, 254
Orange: 237, 132, 30
White: 255, 255, 255
Red: 232, 68, 21
Blue: 0, 59, 250
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)- encodingImage.jpg is a small (4 X 3 pixel) image. The 24 bit RGB color codes are
as follows:
Cyan: 120, 248, 254
Orange: 237, 132, 30
White: 255, 255, 255
Red: 232, 68, 21
Blue: 0, 59, 250
Write out the bitmapped portion of a table encoding of this image using the minimum
number of bits needed to encode these 5 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 ignoring the header?
14)- encodingImage.jpg is a small (4 X 3 pixel) image. If this were to be stored as an
uncompressed, 16 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 white, 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. One is length, the other is what?
18)- What is one form of optical mixing that sacrifices resolution at the altar of color
accuracy?
19)- What is it about the human eye that the tri-stimulus model is derived from?
20)- Yellow 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 green paint 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?
23)- What color would result if the 24 bit RGB color codes are (180, 180, 180)?
24)- How many different color combinations are possible with 16 bit RGB?
25)- With 16 bit RGB which color gets a 6th bit?