The conversation between human and AI assistant.
What is pset4 in the CS50 (2015) course of edX? How can I solve it?
That sounds challenging. How can I go about solving it?
Well, first you need to understand the concepts of image processing and manipulation. Once you have a good grasp of those, you can start working on the problems given in the pset4 assignment. You can use the resources provided by the CS50 course, such as lectures and other materials, to learn more about these concepts.