ITEC2110 Spring 2013 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 720 x 360 pixel bitmapped image is a 24 bit RGB uncompressed image. What will be the file size (excluding the header)?
4)- Imagine that there are two 720 x 360 pixel images and each has a 24 bit color depth.
Image #1 is a solid color background alone and image #2 is solid color background with
20 small colored circles. If both images were vector graphics which image would have the larger file size?
5)- encodingImage.jpg is a small (4 X 4 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, (1.7, 2.5) and (-1.8, 2.0). 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 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.
11)- encodingImage.jpg is a small (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.

12)- Referring to #11 above, how many bytes in length would this file be if you include both the color table and the bitmap table ignoring the header?
13)- Referring to #11 above, if there were 8 colors instead of 6 how many bits would there be in each pixel position of the pointer table?
14)- encodingImage.jpg is a small (4 X 4 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 affected by the complexity of the image?
16)- Holding a ball that is painted black, you enter a room that is lit with 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)- How is it that newspapers can print images composed of white, black and shades of gray when they only print in black ink?
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)- Yellow 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 only with green 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 (200,200,200)?
24)- How many different color combinations are possible with 16 bit RGB?
25)- With 16 bit RGB which color gets a 6th bit?