ITEC2110 Fall 2013 Test 2, Dr. Jim Rowan
1)- Double click “convolutionCalculationV1.ppt” Calculate the 3 pixels marked X1, X2,
and X3 on the resulting image matrix.
2)- Double click “convolutionCalculationV2.ppt” Calculate the 3 pixels marked X1, X2,
and X3 on the resulting image matrix.
3)- A 1024 x 720 pixel bitmapped image is a 16 bit RGB uncompressed image. What
will be the file size be excluding the header?
4)- There are two vector graphics images, each with a 24 bit color depth. Image #1 is
solid red with no squares and #2 is solid blue with 15 small red squares. Which file will
be larger?
5) There are two bitmapped images with the same dimensions, each with a 24 bit color
depth. Image #1 is solid red with no squares and #2 is solid blue with 15 small red
squares. Which file will be larger?
6)- 4x3_encodingImage1.jpg is a small (4 X 3 pixel) image. If this were to be stored as an
uncompressed, 24 bit RGB image, how many bytes would it be in length?
7)- A given vector is defined by the two points, (-1.3, 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 is the technique that makes the above-mentioned jagged line appear smoother
to the human eye called?
11)- 5x3_encodingImage2.jpg is a small (5 X 3 pixel) image. The 24 bit RGB color codes
are as follows:
Grey 150,150,150
Green 0,250,0
White 255,255,255
Blue 0,0,245
Black 0,0,0
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) 5x3_encodingImage2.jpg is a small (5 X 3 pixel) image. The 24 bit RGB color codes
are as follows:
Grey 150,150,150
Green 0,250,0
White 255,255,255
Blue 0,0,245
Black 0,0,0
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)- Referring to #12 above, if there were 9 colors instead of 5 how many bits would
there be in each pixel position of the pointer table?
15)- 4x3_encodingImage1.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?
16)- Which type of image, bitmapped or vector graphic, is scalable?
17)- Holding a ball that is painted red, 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?
18)- A vector is defined by two characteristics. One is length, the other is what?
19)- What is a form of optical mixing that sacrifices resolution at the altar of color
accuracy?
20)- What is it about the human eye that the tri-stimulus model is derived from?
21)- Yellow is what you get when you remove what color or colors from white light?
22)- Yellow is what you get when you mix what colors of light?
23)- Holding a ball painted with magenta paint you enter a room that is lit with blue
colored light. What color does the ball appear to be in this room?
24)- How many different color combinations are possible with 16 bit RGB?
25)- With 16 bit RGB which color gets a 6th bit?