CS185c Spring 2019Practice Final

To study for the final I would suggest you: (1) Know how to do (by heart) all the practice problems. (2) Go over your notes at least three times. Second and third time try to see how much you can remember from the first time. (3) Go over the homework problems. (4) Try to create your own problems similar to the ones I have given and solve them. (5) Skim the relevant sections from the book. (6) If you want to study in groups, at this point you are ready to quiz each other. The practice final is below. Here are some facts about the actual final: (a) It is comprehensive (b) It is closed book, closed notes. Nothing will be permitted on your desk except your pen (pencil) and test. (c) You should bring photo ID. (d) There will be more than one version of the test. Each version will be of comparable difficulty. (e) It is 10 problems (3pts each), 6 problems will be on materials since the midterm, 4 problems will be from the topics of the midterm. (f) Two problems will be exactly (less typos) off of the practice final, and one will be off of the practice midterm.

1. Suppose we have left and right eye panorama video source videos left.mp4, right.mp4 (already lens corrected) and we like to produce a 360 3D video. Give the FFMPEG command to do this.
2. Briefly define the following kinds of eye movements: Saccades, smooth pursuit, vergeance.
3. Explain the following kinds of depth cues: Motion parallax, accommodation, height in the visual field.
4. Go over the process needed to get the humanoid model Ethan to follow one's gaze in a VR scene using Unity.
5. What is a prefab in Unity? What are the classes Input and OVRInput? Give example methods of each.
6. What is a Reichardt detector? What is stroboscopic apparent motion? What is a low persistance display mode and what is it used for?
7. Give pseudo-code for object-order and image-order rendering.
8. Explain the Blinn Phong shading model where an ambient lighting term has been added. Give an example of calculating something with it.
9. Express the point `(0, 0.5, 0)` in barycentric coordinates with respect to the triangle with vertices `(-1,0,0)`, `(0,1,0)`, `(0,0,1)`
10. Explain how software correction of optical distortion is done.