Die Suche ergab 209 Treffer

von hymGo
2. Dez 2013 22:03
Forum: Lernende Roboter
Thema: Ex02 - n-step ahead prediction
Antworten: 0
Zugriffe: 3291

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= ...
von hymGo
2. Dez 2013 20:04
Forum: Lernende Roboter
Thema: Homework 2 - Double Pendulum
Antworten: 1
Zugriffe: 4542

Re: Homework 2 - Double Pendulum

Hi,
I just recognized that a template was uploaded (at least I think it is a template :wink:)

Update: However, matlab produces the following error if I call: mex DoublePendulum_C_....
Error using mex (line 206)
Unable to complete successfully.
von hymGo
11. Nov 2013 14:52
Forum: Lernende Roboter
Thema: HW 1 Task 1.2f - steps
Antworten: 2
Zugriffe: 2144

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 :...
von hymGo
27. Sep 2013 14:46
Forum: Probabilistische Graphische Modelle
Thema: Vorlesung im WS 12/13
Antworten: 3
Zugriffe: 2594

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)
von hymGo
26. Sep 2013 15:52
Forum: Computer Vision 2
Thema: CV 2 im WS 2013/2014
Antworten: 1
Zugriffe: 1966

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.
von hymGo
17. Jul 2013 15:20
Forum: Computer Vision
Thema: Panorama creation
Antworten: 8
Zugriffe: 1798

Re: Panorama creation

Hmm... I think the problem occurs because of my transformed image. It is probably wrong :D (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 ^^
von hymGo
16. Jul 2013 14:20
Forum: Computer Vision
Thema: Panorama creation
Antworten: 8
Zugriffe: 1798

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...
von hymGo
15. Jul 2013 15:35
Forum: Computer Vision
Thema: Panorama creation
Antworten: 8
Zugriffe: 1798

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/...
von hymGo
15. Jul 2013 15:26
Forum: Computer Vision
Thema: How to estimate the homography matrix
Antworten: 4
Zugriffe: 1511

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...
von hymGo
13. Jul 2013 10:29
Forum: Computer Vision
Thema: Transform a4p3b
Antworten: 4
Zugriffe: 978

Re: Transform a4p3b

lustiz hat geschrieben:
hymGo hat geschrieben:I hope that did not confuse you :P
It was a bit confusing, but I think it helped :wink:
Consequently, my result looks a bit more appealing (and is hopefully right) . Now, I need to reconstruct the whole panorama ^^
von hymGo
12. Jul 2013 11:31
Forum: Computer Vision
Thema: Transform a4p3b
Antworten: 4
Zugriffe: 978

Re: Transform a4p3b

Yes, I thought that too. Trying it the other way around reluts in a bad results, as well :D
Maybee I have todo some re-thinking (even so I really thought my soultion should be right xD)
von hymGo
12. Jul 2013 10:00
Forum: Computer Vision
Thema: Transform a4p3b
Antworten: 4
Zugriffe: 978

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...
von hymGo
1. Jul 2013 18:05
Forum: Computer Vision
Thema: Assignment 3 - Problem 1B: What if C=0?
Antworten: 2
Zugriffe: 709

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 :wink:
von hymGo
28. Jun 2013 19:20
Forum: Computer Vision
Thema: Ex 3.2 - Comparing error rates
Antworten: 8
Zugriffe: 1873

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...
von hymGo
28. Jun 2013 14:17
Forum: Computer Vision
Thema: Assignment 3 Problem 1, warning using quadprog
Antworten: 3
Zugriffe: 1174

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 ...

Zur erweiterten Suche