Die Suche ergab 209 Treffer
- 2. Dez 2013 22:03
- Forum: Lernende Roboter
- Thema: Ex02 - n-step ahead prediction
- Antworten: 0
- Zugriffe: 5447
Ex02 - n-step ahead prediction
Hi, I have a question regarding task 1.f: We should compute the 20-step ahead prediction. The target state is 0 (I thought this means q1_t=0 and q2_t=0.) . As initial state we should use the first data point from the validation set. Regarding this data point we approximately have q1=-0.0157 and q2= ...
- 2. Dez 2013 20:04
- Forum: Lernende Roboter
- Thema: Homework 2 - Double Pendulum
- Antworten: 1
- Zugriffe: 7409
Re: Homework 2 - Double Pendulum
Hi,
I just recognized that a template was uploaded (at least I think it is a template
)
Update: However, matlab produces the following error if I call: mex DoublePendulum_C_....
Error using mex (line 206)
Unable to complete successfully.
I just recognized that a template was uploaded (at least I think it is a template

Update: However, matlab produces the following error if I call: mex DoublePendulum_C_....
Error using mex (line 206)
Unable to complete successfully.
- 11. Nov 2013 14:52
- Forum: Lernende Roboter
- Thema: HW 1 Task 1.2f - steps
- Antworten: 2
- Zugriffe: 3344
Re: HW 1 Task 1.2f - steps
I see a diference, too. However, my robot does not reach the target position with non of the approaches (the first link is alway pointing updards). I am also not sure how to compute xd. Its a litte strage if I use the Jacobian and qd to obtain xd, since I used this xd afterwards to obtain qd again :...
- 27. Sep 2013 14:46
- Forum: Probabilistische Graphische Modelle
- Thema: Vorlesung im WS 12/13
- Antworten: 3
- Zugriffe: 3598
Re: Vorlesung im WS 12/13
Kann sein, dass die Antwort nein ist. Zumindestens steht folgendes in dem Einfürhungsfoliensatz vom Computer Vision 1 (SoSe 2013):
Maschinelles Lernen - Statistische Verfahren II (Roth, WS, not in 2013)
(http://www.gris.tu-darmstadt.de/teachin ... -intro.pdf, Slide 11)
Maschinelles Lernen - Statistische Verfahren II (Roth, WS, not in 2013)
(http://www.gris.tu-darmstadt.de/teachin ... -intro.pdf, Slide 11)
- 26. Sep 2013 15:52
- Forum: Computer Vision 2
- Thema: CV 2 im WS 2013/2014
- Antworten: 1
- Zugriffe: 3015
Re: CV 2 im WS 2013/2014
Wahrscheinlich nicht. In den Einführungsfoliensatz zu Computer Vision 1 (SoSe 2013) steht folgendes:
"Computer Vision II (Roth, WS, not in 2013)"
Ich glaube der Turnus soll gewechselt werden, so dass CV1 im WS liegt und CV2 im SoSe.
"Computer Vision II (Roth, WS, not in 2013)"
Ich glaube der Turnus soll gewechselt werden, so dass CV1 im WS liegt und CV2 im SoSe.
- 17. Jul 2013 15:20
- Forum: Computer Vision
- Thema: Panorama creation
- Antworten: 8
- Zugriffe: 2183
Re: Panorama creation
Hmm... I think the problem occurs because of my transformed image. It is probably wrong
(see here: viewtopic.php?f=290&t=28497). Don't know if its just the size or the whole procedure. I think I have to spend sime time on it again ^^

- 16. Jul 2013 14:20
- Forum: Computer Vision
- Thema: Panorama creation
- Antworten: 8
- Zugriffe: 2183
Re: Panorama creation
Any other ideas of putting those images together? For me it's the same. I have no clue :D And I do not find any ressources that provide my some kind of clue. I tried template matching (but the images are just too large) and I used a variant were I calculated some kind of bounding box (using the NaN...
- 15. Jul 2013 15:35
- Forum: Computer Vision
- Thema: Panorama creation
- Antworten: 8
- Zugriffe: 2183
Panorama creation
Hi, the task says "The rest part of the panorama image should be reconstructed from transformed a4p3b.png.". I wanted to ask what we are aspected to do (to get all points ^^) ? It is sufficient to implement a simple method which copies the transformend image into the panorama (so that it looks nice/...
- 15. Jul 2013 15:26
- Forum: Computer Vision
- Thema: How to estimate the homography matrix
- Antworten: 4
- Zugriffe: 1921
Re: How to estimate the homography matrix
Hi, my homography estimation is not very stable. Sometimes the resuling image looks very good, sometimes its really messed up. I follow the tipps from here https://www.fachschaft.informatik.tu-darmstadt.de/forum/viewtopic.php?f=290&t=28472 (threshold for chi square + use only the remaining pairs for...
- 13. Jul 2013 10:29
- Forum: Computer Vision
- Thema: Transform a4p3b
- Antworten: 4
- Zugriffe: 1258
Re: Transform a4p3b
It was a bit confusing, but I think it helpedlustiz hat geschrieben:hymGo hat geschrieben:I hope that did not confuse you

Consequently, my result looks a bit more appealing (and is hopefully right) . Now, I need to reconstruct the whole panorama ^^
- 12. Jul 2013 11:31
- Forum: Computer Vision
- Thema: Transform a4p3b
- Antworten: 4
- Zugriffe: 1258
Re: Transform a4p3b
Yes, I thought that too. Trying it the other way around reluts in a bad results, as well 
Maybee I have todo some re-thinking (even so I really thought my soultion should be right xD)

Maybee I have todo some re-thinking (even so I really thought my soultion should be right xD)
- 12. Jul 2013 10:00
- Forum: Computer Vision
- Thema: Transform a4p3b
- Antworten: 4
- Zugriffe: 1258
Transform a4p3b
Hi, I just can't find my error, so I hope someone else can give me a hint :) I try to transform the image a4p3b into the plane of a4p3a. Therefore, I proceed as stated in the task. First, I use the homography to get the coordinates of a4p3b in the plane of a4p3a. Afterwards, I use interp2 to interpo...
- 1. Jul 2013 18:05
- Forum: Computer Vision
- Thema: Assignment 3 - Problem 1B: What if C=0?
- Antworten: 2
- Zugriffe: 1092
Re: Assignment 3 - Problem 1B: What if C=0?
C determines the degree of punishment for the slack variables. To achieve results as in a) (or rather no slack) C must be choosen ...
Sorry can't give the full answer. If you don't get it, just try it out. There are only two possibilities
Sorry can't give the full answer. If you don't get it, just try it out. There are only two possibilities

- 28. Jun 2013 19:20
- Forum: Computer Vision
- Thema: Ex 3.2 - Comparing error rates
- Antworten: 8
- Zugriffe: 2183
Re: Ex 3.2 - Comparing error rates
As far as times are concerned, extracting the features takes most of the time (ca 1 minute for all images). KMeans takes about 4-6 seconds. All other computations are neglectable. Btw: My processor is a core 2 duo 2.5Ghz. I have nearly the same processor. Loading the images takes ca. 80 secs. and t...
- 28. Jun 2013 14:17
- Forum: Computer Vision
- Thema: Assignment 3 Problem 1, warning using quadprog
- Antworten: 3
- Zugriffe: 1524
Re: Assignment 3 Problem 1, warning using quadprog
I get a warning, too. Anyway, the displayed results seems to be correct. Warning: Trust-region-reflective algorithm does not solve this type of problem, using active-set algorithm. For more help, see Choosing the Algorithm in the documentation. > In quadprog at 371 In train_svm_s at 37 In problem1a ...