1. What is aliasing?
2. What is the Nyquist rate?
3. What is Moire pattern?
4. Explain the concept of "bits per pixel" and how it is related to a digital image quality.
5. Explain the concept of contrast.
6. Tanimoto
Chap. 3 Exercise 2 (p. 53)
Suppose you wish to take the photographic negative of an image.
(a) A pixel what is black (0,0,0) should be changed to what color and what value?
(b) What formula should you use for each color to perform the negation?
7. Tanimoto
Chap. 3 Exercise 5 (p. 54)
Suppose you have a fairly bright image and you want to make 10 percent darker, what formula should you use?
8. Tanimoto
Chap. 3 Exercise 6 (p. 54)
Express each of the following numbers (given in decimal) in the binary number system:
(a) 7
(b) 16
(c) 31
(d) 100
9. Tanimoto
Chap. 3 Exercise 7 (p. 54)
Give the decimal equivalent for each of the following numbers given in the binary system:
(a) 1010
(b) 10001
(c) 11011
(d) 1111111
10. Tanimoto
Chap. 3 Exercise 12 (p. 54)
Suppose that a color image is 1600 pixels wide and 1200 pixels high. If it uses 8 bits to represent each of red, green, and blue components of each pixel, how many bytes of memory does the image require?
11. Go to the Textbook Support Website at http://pixels.cs.washington.edu/. Click the link PixelMath to download PixelMath.
You need to fill out a form before downloading.
PixelMath is a small tool. It is a single file material_PixelMath2015.jar in the form of jar file and it does not need installation. Double click it, the PixelMath Launch Pad will run and you will see see image.
Click the Calculator button on the bottom, the Calculator will run see image.
Try to play with the PixelMath Calculator with the examples in the textbook.
Report that you downloaded PixelMath.
Report what functionalities you have tried out with the PixelMath Calculator. See reference in the reading of the textbook.