CS465: Computer Graphics I—Fall 2004

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schedule

readings

homeworks

assignments

Announcements

12 October: The TA evaluation forms are now up and running. Please give us feedback! The site will close on October 31, so do it before then.

26 September: The sampling and reconstruction notes have been updated to fix a couple of typos, including ones that affect the definitions of the filters for the Resample assignment.

14 September: Homework 3 has been revised to reduce the amount of computation required for the B-spline.

30 August: Homework 1 has been revised to include some additional explanation.

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 9

Assignment | Solutions

Robot Example | Basis Function Graphs

FAQ:

• No updates yet!

Homework 8

Assignment | Solutions

FAQ:

• No updates yet!

Homework 7

Assignment | Solutions

FAQ:

• 6:00 pm, 2 November 2004: Fixed some typos in the solutions for problems 10.4 and 11.1.
• 11:30 am, 27 October 2004: In question 10.2, you have to solve a system of linear equations. It's not infeasible to solve it by hand, but you could also phrase it as a matrix inversion problem and solve it by computer.

Homework 6

Assignment | Solutions

FAQ:

• 12:15 am, 2 November 2004: Fixed an errant minus sign in the projection matrix. The cell (3, 4) was supposed to be "18", not "-18". This is now fixed.
• 10:00 pm, 1 November 2004: Small change to the solutions. The bounding rectangle is now correct.

Homework 5

Assignment (v.2) | Solutions

FAQ:

• 10:00pm, 29 September 2004: Version 2 of the handout fixes a confusing bug in question 1.3.

Homework 4

Assignment | Solutions

FAQ:

• No updates yet!

Homework 3

Assignment (v.2) | Solutions

FAQ:

• 11:00 pm, 14 September 2004: We've reduced Problem 4.3 to a 3x3 neighborhood (rather than 5x5); see the revised handout. If you already computed the 5x5 answer, go ahead and turn it in and we'll give you extra credit for it.
• 11:20 pm, 14 September 2004: What precision is required for the answers?
  A: For most of the homework just working in fractions is easiest, but you're also welcome to give decimals rounded to two significant figures (you'll probably want to go this route for the B-spline in 4.3). Keep three significant figures in your computations to keep rounding errors from accumulating.
• 11:30 pm, 14 September 2004: Should I use separability when I resample in Problem 4?
  A: You're welcome do do it either way, but the separable route seems easiest to us.
• 8:45 pm, 16 September 2004: Why doesn't the cubic equation come out correctly?
  A: The leading coefficient in the cubic equation should be -3, not 3. The new equation is

  (-3*(1-|x|)^3 + 3*(1-|x|)^2 + 3*(1-|x|) + 1)/6

  when

  |x| < 1

  .
• 8:45 pm, 16 September 2004: Are pixels in the image little boxes with a height, or are they spikes with a height?
  A: Each pixel in the image is a little spike. Samples are always represented as dirac delta functions, and an image is just a 2D collection of samples.

Homework 2

Assignment | Solutions

FAQ:

• No updates yet!

Homework 1

Assignment | Solutions

FAQ:

• No updates yet!

CS 465 Fall 2004 (cs465-staff-l@cs.cornell.edu)