R. Craig Collins > Intro to Computer Graphics > Review for Test 1

Review for Test 1 © R. Craig Collins, 2007

1. In this class, can homework be turned in when ever you want?
2. Since make up tests aren't done, what replaces a missing test, or is used to improve your lowest test score?
   
   From Overview 2 ( Images, Hardware, Camera): Answer the following questions
3.  What does pixel stand for?
4. How is resolution measured?
5. True color monitors can display how many colors?
6. Images created by a series of pixels are called ____________ (raster or vector)
   
   From Overview 3: (Bitmaps, TIFF) Answer the following questions
7. What kind of raster images are fairly low resolution? Think Microsoft Paint files.
8. What kind of raster images are fairly high resolution, and well suited for storing original photograph files?
9. Are the file formats mentions above widely supported on the Internet? Why not?
   
   From Lab 1: Answer the following questions
10. Label the following Microsoft Paint tools

    1. _____ 2. _____ 3. _____ 4. _____ 5. _____ 6. _____ 7. _____

11. One way to resize a Paint canvas is to click the drag handles on the sides, or corners.
    What's the other way?
12. How do you select the foreground color in Paint?
13. How do you select the background color in Paint?
14. To make a line straight, or an ellipse perfectly round, you hold down the ____ key
15. True or false, When you select the brush tool, you can select multiple brush size/shape options
16. The default for a Paint file type is ___
17. When using the curve tool, the easiest way to lock in the curve in place is to _____
18. If you have a box drawn that you wish to fill with color, you must first make sure
    a) the box has no gaps, or the color will flood other parts of the image, also
    b) the background color is set to the same shade as the foreground color
    c) you must select another tool, before using the tool again
    d) that the new color is darker that the old color
19. True or false, You can copy an image from another program, and paste it into Paint
    
    From Overview 4: (Bitmap to GIF, compression) Answer the following questions
20. What is compression?
21. What are the two ways to compress a file?
22. True or False:        gif files are smaller that bmp files
23. What are the two ways to compress a file?
    
    F rom Lab 2: Answer the following questions
24. True or False: gif stands for Great Image Format
25. gif is a ______ image type
    a) vector
    b) raster
    c) pixelmap
    d) iTunes
26. gif is best suited for
    a) photographs
    b) simple line drawings with few colors
    c) simple line drawings with millions of colors
    d) music files
27. gif files are typically used
    a) on the internet
    b) for saving photographs
    c) for printing photographs
    d) to compress photographs
28. True or False: the gif format is protected by a current patent
29. What features are supported in new gif files? (Choose all that apply)
    a) 24 bit color
    b) animation
    c) high resolution
    d) transparency
    e) 256 color
    f) non-interlaced
    g) interlacing
30. Telling the computer to ignore part of an image is
    a) transparency
    b) animation
    c) interlacing
    d) compression
31. Displaying a image gradually, until the image fills in, is called
    a) transparency
    b) animation
    c) interlacing
    d) compression
32. Displaying one image, followed by another image, is called
    a) transparency
    b) animation
    c) interlacing
    d) compression
33. Match the file types according to quality and file size

	24 bit bitmap	Large file size, high resolution file with millions of possible colors
	dither
	256 color bitmap	Large file size, low resolution file with millions of possible colors
	16 color bitmap
	monochrome bitmap	Small file size, 256 color limit, suitable for use on the Internet
	tiff
	gif	mixing colored dots to approximate another color


From Overview 5 (GIF animation, transparency): Answer the following questions
From Lab 3: Answer the following questions

34. An animated file is actually ________ stored together, being displayed one at a time.
35. When an animated gif is created, you can control if the animation goes through each image and then quits at the end, or it can be set to ________ through the images
    
36. ____________is controlling how how fast or slow the animation is...
    
37. When using unFREEz, you can only drag in ______ files for animation
    
38. Do animated gif files support sound?
    
39. Why is a longer animated gif file normally a larger file?
    
    From lab 4: Answer the following questions
40. The GIMP when started opens ____ window(s).
    
41. When you use the GIMP window to open a file, the image opens in a ____ window
    
42. Match the commands with menu the command is found on in the GIMP

Edit menu	Select\None command
File menu	Copy command
Image menu	brightness-contrast command
Select menu	Save As command
Tools menu	Image Crop command

43. On TV, the weather person used a process called ________ to appear to stand in front of a map
    
44. In gif files, the hiding of an area or color, using a(n) ________ , can create transparency
    
45. Another method that can create transparency is to add the equivalent of clear plastic over the image, these clear sheets are called ________
    
    
46. 1) in the image above is below the select _____regions ...
47. and select______ regions tools
48. 2) in the image above is right below the select _____regions...
49. and select _____regions
50. 3) in the image above is below, and to the right of the ____ to background or transparency tool