Outline:

1. Quiz 2
2. Color models
   • how humans see color
   • how computers output color
   • Exercise 1
3. Working with images
   • Image objects in graphics.py
   • creating an image with image.setPixel

Explore after class:

4. Additive versus subtractive color
5. Creating an image made of random colors
   • Exercise 2
6. Working with existing images
   • getting a pixel’s color with image.getPixel: Exercise 3
   • creating a grayscale image: Exercise 4

Reading assignment (to be completed by the next class):

• Zelle sections 4.8.4-4.8.5 (pp. 120-121)
• Assignment #5 (due next Thursday at 10pm)