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The final exam for cs 184, computer graphics course, held in spring 2001 at university of california, berkeley. The exam covers topics such as labeling the brightest spot on objects with different surface properties, understanding local and global illumination, identifying cubic splines with specific properties, simulating diffuse reflection, explaining the differences between various mapping techniques, and discussing the importance of back-face culling and rendering techniques for non-flat screens.
Typology: Exams
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(a) [4 points] In the scene below, label the brightest spot on the object assuming that it has a diffuse (Lambertian) surface.
(b) [4 points] Label the brightest spot on the object assuming that it has a highly specular surface.
CS 184, Spring 2001 Final Professors Brian A. Barsky and James F. O'Brien 1
[4 points] In 25 words of less, what is the difference between local and global illumnation?
[9 points] Indicate which cubic splines have the specified properties. Hermite Bézier Catmull-Rom (a) Convex hull property (b) Fully interpolatory (c) Specify the slop of the curve at the endpoints of each segment
[1 point] Did you put your name on the front of this exam?
[5 points] Which of the following would allow a ray tracer to simulate diffuse reflection? (a) Deeper recursion (b) Shooting more rays at each bounce (in random directions) (c) Fuzzy logic (d) Higher precision arithmetic Please explain your answer.
[4 points] A radiosity solution for a particular environment is computed and displayed. What parts (if any) of the solution would need to be recomputed if the viewpoint is moved?
[9 points] What is the difference between bump mapping, dispacement mapping, and environment mapping?
[4 points] Why would you want to perform back-face culling if you already had a built in hardware Z-buffer?
[4 points] You are producing a film for a screen that is not flat (like an IMAX screen). What would be a good rendering technique to use?
[4 points] Name two shapes which could be the result of (planar) perspective projection applied to a line segment.
Problem #4 2
