CS465: Computer Graphics I—Fall 2006

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schedule

readings

homeworks

assignments

Announcements

8 December: A treasury of vintage exams is now available for your perusal as you study for the final. The final is scheduled on Monday (11 December) at 2:00 pm in Hollister 110 and runs for 2.5 hours.

25 November: There is a small change to the file format spec for antialiasing. See the ray2 assignment page.

20 November: John K.'s office hours that were scheduled for Tuesday 21 Nov will be replaced by an extra office hour the following week, on Wednesday 29 Nov, from 3:30 to 4:30.

20 November: The Ray II help session will be tonight at 6pm in Rhodes 455.

1 November: Greg's office hours that were scheduled for Thursday 2 Nov will be held on Friday 3 Nov, from 12:30 to 1:30.

31 October: The pipeline help session scheduled for tomorrow night will take place on Thursday 2 Nov instead. Also, Michael will not hold his office hours tomorrow, 1 Nov.

11 October: The model help session originally planned for tonight will be held next week at the same time, instead.

25 September: The schedule is slightly rearranged. The first midterm will be on Wednesday, October 4, and one homework has been removed to prevent deadlines piling up too close together.

16 September: There is a small revision to hw4.

6 September: There is a fix to the ray1 framework; see the ray1 assignment page.

5 September: There are new test scenes posted on the ray1 assignment page.

4 September: There are updates to the hw1 FAQ, and the ray1 assignment page has some information on IDE setup.

1 September: Due to slowness in setting up TA support, we are accepting hw1 on the due date for hw2, though we urge you to turn it in if you are done with it, so that you can get on with hw2.

25 August: Welcome to CS465! Be sure to check this space regularly, because we'll use it for announcements you won't want to miss.

Homeworks

Homework 10

Assignment | Solutions
m-rgb.txt; columns: wavelength (nm); spectral power density for red, green, and blue primaries (relative units)
skin-d65.txt; columns: wavelength (nm); reflected spectral power density (relative units)
xyz.txt; columns: wavelength (nm); values for the CIE X, Y, and Z color matching functions

FAQ:

• No updates yet!

Homework 9

Assignment | Solutions

FAQ:

• No updates yet!

Homework 8

Assignment (v. 2) | Solutions

FAQ:

• No updates yet!

Homework 7

Assignment | Solutions

FAQ:

• No updates yet!

Homework 6

Assignment | Solutions

FAQ:

• No updates yet!

Homework 5

Assignment | Solutions | Solution figures

FAQ:

• No updates yet!

Homework 4

Assignment (v.2) | Solutions

FAQ:

• Q: What does "non-uniform scale about the canonical axes" mean?
  A: A nonuniform scale around the canonical axes is a scale in x and a scale in y -- this is the "canonical type" from the notes, with a matrix of [a 0 0; 0 b 0; 0 0 1].
• Q: What does "non-uniforme scale with respect to an arbitrary center and axis" mean?
  A: A nonuniform scale can be defined around any point in the plane, with the two scale factors being along any two orthogonal axes. For instance, I might define a scale centered at (-1, -1) that scales by two along the direction (1, 1) and not at all along the orthogonal direction. This would, for example, map the point (0, 0) to the point (1, 1).
• Q: In question 3, can some of the transformation matrices be rotations about a point that is NOT the origin?
  A:Yes, you're welcome to use any transformation that can be conveniently and precisely described; the only-around-center constraint only applies to 2a.

Homework 3

Assignment | Solutions | Solution diagram

FAQ:

• No updates yet!

Homework 2

Assignment | Solutions

FAQ:

• Q: What do you mean by swapping the viewpoint and the image plane point?
  A: I have in mind ray generation code that does everything correctly—it finds the correct viewpoint p and the correct point q on the image plane—but then accidentally interchanges p and q when constructing the viewing ray. In answering this question go ahead and assume there are no objects between the viewpoint and the image plane.

Homework 1

Assignment | Solutions

FAQ:

• Q: What is this LUT all about?
  A: The lookup table (LUT) converts pixel values in graphics memory (in the framebuffer) to pixel values that get sent to the display. It is just a table with an entry for every possible pixel value. For instance, for an 8-bit framebuffer there are 256 LUT entries: the first one determines what value is sent to the display when the pixel value "0" appears in the image, the second one determines what is sent for a "1", and so on.
• Q: What about color?
  A: You can assume that there is a single LUT that is applied in the same way to each of the three color channels. Really, you don't need to think about color at all for this assignment other than to remember that there are 3 channels when computing sizes.