Outline:

0. Questions?
1. Recap Lesson 15: nested for loops, RGB colors, and Image objects
   • tracing nested loops
   • creating random images
2. Image processing
   • creating a grayscale image: Exercise 1

Explore after class:

3. Practice with nested loops: mixing for and while
   • Exercise 2
4. Canny edge detection

Want more practice?

5. Runestone:
   • using print statements for debugging
6. Codingbat for string review:
   • Strings
   • Others: string_times, string_bits, string_splosion, big_diff

What’s next

Upcoming events/assessments:

• CS Bits and Bytes tomorrow at 3:30pm in Anderson 329: FRSecure
• Your first Project Code deliverable is due this Thursday at 10pm
• Quiz #3 will be on Friday (in Olin 149)

What you should do now:

• The readings (see below)
• Keep working on your project
• Prep for Quiz 3

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

• Runestone: nested for loops