ITEC2110 Fall 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.
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 1024 x 720 pixel bitmapped images each a 24 bit RGB uncompressed
image. Image #1 is solid red and #2 is solid blue with 15 red squares that measure 15 x 15
pixels. Which file will be larger?
5)- encodingImage.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?
6)- 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?
7)- What is it about human vision that JPEG image compression takes advantage of in
order to compress a file?
8)- 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?
9)- What is the technique that makes the above-mentioned jagged line appear smoother to
the human eye called?
10)- encodingImage.jpg is a small (4 X 3 pixel) image. The 24 bit RGB color codes are
as follows:
Cyan 0,234,238
Orange 237,132,0
White 255,255,255
Blue 0,0,245
Red 233,68,0
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.
11)- encodingImage.jpg is a small (4 X 3 pixel) image. The 24 bit RGB color codes are
as follows:
Cyan 0,234,238
Orange 237,132,0
White 255,255,255
Blue 0,0,245
Red 233,68,0
Write out the bitmapped portion of a table encoding of this image using the minimum
number of bits needed to encode these 5 colors.
12)- 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?
13)- 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?
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 a 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)- Cyan 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 magenta 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?