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cse252b wi11 discussion board

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35
Sofia
05-16-2013
02:27 AM ET (US)
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34
Heaven
07-29-2012
11:13 PM ET (US)
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Edited 07-29-2012 11:14 PM
33
Spam deleted by QuickTopic 03-09-2012 02:31 PM
32
HF
03-06-2011
08:17 PM ET (US)
So I'm just going to swallow my pride here and ask, is anyone up for last minute collaboration? I decided to work alone in this class, which in hindsight was a huge mistake.

I have fully completed assignments 1 and 4, and partially completed assignments 2 and 3. I don't think I could fully complete those assignments by the due date if I continue working alone.

If anyone is in a similar situation and feel that collaborating would be mutually beneficial please email me at hfutrell@cs.ucsd.edu.
31
MY
02-28-2011
12:46 AM ET (US)
Are all four homework due next Tuesday? or just HW4?

The website said,"the actual due date for turning in all of the assignments is March 8 at 5pm" Professor's email,"I'm extending the final homework due date by 1 week (to Mar. 8)."
30
Alex
02-27-2011
02:30 AM ET (US)
How will the homework be turned in? Will it be a hard or soft copy? Do you also want the matlab files?
29
MP
02-22-2011
10:58 PM ET (US)
Homework #4 is due next Tuesday and we havent' covered the material yet. What gives?
28
Andrew Ziegler
02-21-2011
09:47 PM ET (US)
At /m27 L:C3x3 -> C3x3; X |-> X - CXC^T The first part is saying that L maps 3x3 matrices with complex entries to 3x3 matrices with complex entries. The second part shows the action L takes on a matrix X.
Edited 02-21-2011 10:24 PM
27
Alex
02-19-2011
04:59 AM ET (US)
I don't understand the notation for the Lyapunov map. Can someone clarify what the equation is saying.
L:C3x3 -> C3x3; X |-> X - CXC^T
26
Steve Branson
02-13-2011
10:33 PM ET (US)
At /m24, for the time being here is a download link for chapter 2: http://www.cse.ucsd.edu/~sjb/tmp/HZ2eCh2.pdf
25
My Pham
02-13-2011
06:38 PM ET (US)
At /m23, this ebook hides quite a number of pages, and p.56 for example 2.2 is one of them.
24
My Pham
02-13-2011
05:30 PM ET (US)
I couldn't find the link to H&Z Example 2.2 (Metric Rectification I), p.56 for homework 3 either.
23
Steve Branson
02-13-2011
05:29 PM ET (US)
At /m22, it seems like the e-reserves link has gone missing. You can use the google books link instead
http://books.google.com/books?id=si3R3Pfa9...v=onepage&q&f=false
22
Andrew Ziegler
02-13-2011
04:47 PM ET (US)
For hw3 we are supposed to implement a few things from the H&Z book. I followed the "CSE 252B e-reserves" link, on the course webpage, and I only saw excerpts from chapters 3 and 8. However, we are supposed to implement something from chapter 2 for problem 3b. I also followed the "e-book" link and it says "Document Unavailable". I'm using the off-campus proxy, but I don't think that should be a problem. Is there some other way I can get access to the H&Z book?
21
Steve Branson
02-12-2011
04:41 PM ET (US)
At /m20, the 3d points most likely won't be exactly the same numerically, because there is a scale ambiguity (e.g., you can't tell the difference between looking at the true scene and a miniature model of the scene with a smaller translation between cameras). However, if you plot the points in matlab, the points should appear to have the correct 3d structure.

This problem is a bit confusing because the code used to synthesize the data is available. However, one could do parts a-d without looking at the code and just treating the synthesized views as real images. For part d), the reprojection error can be computed only using Eqn 5.23 and Eqn 5.17. If you use the synthetic 2d points (as opposed to manually clicking on n points), you will get something close to 0 for the reprojection error.
20
Alex
02-12-2011
02:48 AM ET (US)
When we are reconstructing the 3d coordinates for a the 2 calibrated cameras in hw2 problem 5, are the calculated 3d points supposed to be close to the real 3d points?
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