Stack Exchange
log in   chat   discuss   faq   users   badges

Area 51 » Technology

definition commitment
128
followers
Follow It!
Share This

Computer Vision

Proposed Q&A site for computer vision and robotics researchers/developers.
flag

Announcements

19  
There is a "Signal, Image and Video Processing" site on Area 51 now. I would say that these two should be morphed into the same site. – Adi Shavit Jan 3 '11 at 18:44
2  
@Adi Shavit: Completely agree. Here's the link for convenience: area51.stackexchange.com/proposals/1691/… – Jonas Jan 21 '11 at 18:05
3  
Signal Processing is now in Public Beta stage. – om-nom-nom Sep 12 '11 at 16:26
show 3 more announcements
24
votes
4
answers

Shall we merge Computer Vision and Signal, Image & Video Processing?

jun 25 at 16:50 Peter K. 2,937

create new discussion

This proposal is now in the Commitment phase — example questions are locked!

60 Example Questions (9 closed)

active oldest votes
up vote 24 down vote
What are the limitations of a Canny edge detector?
added by Wookai, edited by WikiSpeedia hang-around Mar 1 '11 at 20:48
link|flag
This is a good example of a question the differentiates this site from SO. – Adam Davis Jul 6 '10 at 18:05
This question will also be a good example for Signal, Image & Video Processing . – rwong Apr 9 '11 at 19:53
up vote 21 down vote
Could you describe the effects for varying the parameter [x/y/z] of a [canny/sobel] edge detector ?
added by Wookai Jul 3 '10 at 14:01
link|flag
up vote 21 down vote
What are some face detection (not recognition) algorithms suitable for limited (embedded) processors?
added by Adam Davis, edited by WikiSpeedia hang-around Mar 1 '11 at 20:48
link|flag
up vote 21 down vote
How do I evaluate the performance of a segmentation algorithm?
added by forefinger Jul 7 '10 at 7:01
link|flag
up vote 20 down vote
What are the most common algorithms for adaptive thresholding?
added by chataign Nov 2 '10 at 23:25
link|flag
up vote 12 down vote
Detecting the axis of rotation from a pointcloud
added by Jacob Jul 2 '10 at 19:46
link|flag
up vote 12 down vote
What are some alternatives to SIFT, SURF, etc. that can be used in commercial applications?
added by Utkarsh Sinha, edited by WikiSpeedia hang-around Mar 1 '11 at 20:43
link|flag
Great question! Too bad I am out of votes. – Dima Feb 8 '11 at 14:42
up vote 11 down vote
OpenCV face detection is doing ok. How can I make it work for faces with strong rotations and partial occlusions?
added by Dat Chu Jul 7 '10 at 3:11
link|flag
up vote 8 down vote
I want to do target tracking in underwater video, but I can't extract corner/edge features reliably. What other features could I use?
added by chataign Nov 2 '10 at 23:48
link|flag
up vote 8 down vote
Why do people almost always use a chessboard to calibrate cameras?
added by Utkarsh Sinha Nov 19 '10 at 21:25
link|flag
This type of "curious" questions can be answered with a sentence or two, such as "it is easy to detect all the intersections of the chessboard automatically, and the finite size of the chessboard allows each corner/intersection to be uniquely labeled." This question will be tolerable once the Computer Vision site is stabilized with a healthy population of experts, but it will not help the site in the beginning. There is also an subjective element in it (similar to the questions posted on Programmers.SE) – rwong Apr 9 '11 at 22:34
up vote 7 down vote
What are some line detection algorithms that are computationally less intensive than the standard Hough transform?
added by Utkarsh Sinha Nov 19 '10 at 21:22
link|flag
up vote 6 down vote
What type of features would work for this type of images (images attached)?
added by Dat Chu Jul 7 '10 at 3:08
link|flag
The question should also include the purpose (in order to help choosing features), and any other factors worth mentioning. – rwong Apr 9 '11 at 22:22
up vote 6 down vote
Are genetic algorithms ever used in real-world computer vision applications?
added by Mark Rogers, edited by WikiSpeedia hang-around Mar 1 '11 at 20:42
link|flag
up vote 4 down vote
Alternative to distance metric in nearest neighbor algorithm?
added by Jacob Jul 2 '10 at 19:45
link|flag
up vote 4 down vote
What's a good technique for matching lighting from a source image to a destination image?
added by George Profenza, edited by WikiSpeedia hang-around Mar 1 '11 at 20:46
link|flag
up vote 4 down vote
I want to track human beings from a webcam. How do I do this?
added by Utkarsh Sinha, edited by WikiSpeedia hang-around Mar 1 '11 at 20:43
link|flag
up vote 4 down vote
How do boosted Haar cascades compare to other sliding-window based object detection approaches?
added by ssegvic Nov 21 '10 at 20:28
link|flag
up vote 3 down vote
What are the typical approach to robust tracking of objects with mostly in-plane rotations?
added by Dat Chu Jul 7 '10 at 3:09
link|flag
up vote 3 down vote
How to calculate the measurement uncertainty for a machine vision gauging application?
added by frosty, edited by WikiSpeedia hang-around Mar 1 '11 at 20:45
link|flag
up vote 3 down vote
How do I convert a QImage to an IplImage?
added by bjoernz Nov 4 '10 at 8:29
link|flag
up vote 3 down vote
What preprocessing steps should I do to get better results when creating an OCR based on template matching?
added by Utkarsh Sinha Nov 19 '10 at 20:06
link|flag
This question would be a great on-topic question for Signal, Image & Video Processing. – rwong Apr 9 '11 at 20:25
up vote 2 down vote
Can you recommend literature covering SAD stereo matching?
added by Figaro, edited by WikiSpeedia hang-around Mar 1 '11 at 20:46
link|flag
up vote 2 down vote
What are the advantages and limitations of a Harris corner detector?
added by Jaime Soto Nov 2 '10 at 1:42
link|flag
up vote 2 down vote
Do you know of any open source implementations of the SIFT feature detector/descriptor?
added by Jaime Soto Nov 2 '10 at 1:43
link|flag
vlfeat.org – chataign Nov 2 '10 at 23:28
This is an on-topic question for Computer Vision, but it is on the borderline of being General Reference. The answer will possibly be a list of Wikipedia and URL links, which can be easily found on search engines. This type of questions will not attract experts. – rwong Apr 9 '11 at 22:27
up vote 2 down vote
Are there any open source implementations of <algorithm> in <language>?
added by Jaime Soto Nov 2 '10 at 1:45
link|flag
up vote 2 down vote
In the process of creating panoramas, what is bundle adjustment?
added by Stéphane Péchard Dec 6 '10 at 18:07
link|flag
up vote 2 down vote
How can I robustly track paw prints? (http://stackoverflow.com/questions/3684484/peak-detection-in-a-2d-array)
added by Jonas Dec 7 '10 at 4:45
link|flag
up vote 2 down vote
What is a good way to separate the text vs background in an image before doing OCR?
added by Shervin Emami Jan 25 '11 at 4:06
link|flag
This is a great on-topic example for Signal, Image & Video Processing. More specifically, it asks a question about preprocessing prior to document image processing. It does not involve "extracting or recognizing features from an image of a 3D object". – rwong Apr 9 '11 at 21:57
up vote 2 down vote
Is there a method to detect if a contour is a partial match of another contour in OpenCV?
added by macarthy, edited by WikiSpeedia hang-around Mar 1 '11 at 20:40
link|flag
up vote 2 down vote
How can I use contours or hu moments for the classifcation for shapes using SVM in OpenCV 2.2?
added by macarthy, edited by WikiSpeedia hang-around Mar 1 '11 at 20:39
link|flag
up vote 2 down vote
What are different color spaces (RGB, YUV, HSV) used for?
added by Martin Beckett Feb 8 '11 at 17:50
link|flag
up vote 1 down vote
3D Correspondences from fundamental matrix
added by Jacob Jul 2 '10 at 19:47
link|flag
up vote 1 down vote
What is the latest and greatest in Boosting-variant used in tracking of objects undergoing occlusions, perspective distortions and lighting changes?
added by Dat Chu Jul 7 '10 at 3:10
link|flag
up vote 1 down vote
What's a good alternative to maximum likelihood training if I want my CRF to achieve high per-class scores on PASCAL VOC 2007 task?
added by Yaroslav Bulatov Aug 11 '10 at 0:16
link|flag
up vote 1 down vote
What would be the most efficient way to go about calculating a flow field?
added by Ned Nov 29 '10 at 18:29
link|flag
up vote 1 down vote
How to detect salient objects in a scene?
added by El PY Dec 6 '10 at 13:37
link|flag
I think this seems too general to give a specific answer, since "salient" could mean anything really. If it was "How to detect salient colored objects" or "moving objects" or "salient objects that a human might look at", then there are solutions to it. – Shervin Emami Mar 31 '11 at 2:46
up vote 1 down vote
How can I segment and track multiple objects in a scene with moving camera with occasional hiding or partial occlusion?
added by evident Feb 4 '11 at 12:33
link|flag
up vote 1 down vote
Is there a function to get a topological skeleton of a shape in OpenCV?
added by macarthy, edited by WikiSpeedia hang-around Mar 1 '11 at 20:39
link|flag
up vote 1 down vote
How do I optimize my camera setup for stereoscopic measurements?
added by Martin Beckett Feb 8 '11 at 17:53
link|flag
up vote 1 down vote
What exactly is meant by degrees of freedom of a projective transformation?
added by iamjackbauer, edited by WikiSpeedia hang-around Apr 5 '11 at 20:38
link|flag
1 2 next

This proposal is in:

Commitment

Before the site is created, it needs people to commit to use it. Right now, it's

44%

complete. When it reaches 100%, the beta will begin.

▾ more info

proposed by

Jacob
18.7k●3●25●85

1 year ago

viewed

3,375 times

latest activity

2 days ago

followers

users also following

23.4% Signal Processing
14.1% Computational Sci...
10.9% Robotics research
10.9% Chemistry
26.6% only this proposal

followers active in

70.3% Stack Overflow
32.0% Meta Stack Overflow
28.1% Super User
25.0% Programmers
19.5% Server Fault
15.6% Web Applications

recent followers

added Mar 19 at 6:25
Dipan Mehta
11.7k●2●14●103
added Feb 8 at 9:38
S.L. Barth
4,188●7●13●57
added Jan 19 at 22:04
Lucas
825●15
added Dec 20 '11 at 21:40
André Hoffmann
2,359●7●25
added Dec 20 '11 at 14:28
MobileCushion
1,782●2●19
added Dec 4 '11 at 17:43
yms
4,921●2●11●46
added Dec 3 '11 at 10:35
nikai
2,067●5●11●63
added Nov 21 '11 at 18:10
Will Lucas
51●1
added Nov 16 '11 at 21:32
petrichor
2,655●4●41
added Sep 30 '11 at 11:17
Mark Booth
13.9k●33●154
added Sep 19 '11 at 19:19
Throwback1986
1,962●4●12
added Aug 31 '11 at 17:51
crodriguezo
460●1●10
added Aug 14 '11 at 2:12
Black Square
79●3
added Jul 30 '11 at 4:10
user41336
51●1
added Jul 17 '11 at 1:27
om-nom-nom
7,077●3●18●72
added Jul 16 '11 at 23:41
Kaveh ♦ 1
12.6k●2●37●159
added Jul 9 '11 at 9:07
jonsca ♦ 1
20.5k●21●61●266
added Jun 22 '11 at 12:55
Isaac Gerg
51●1
added Jun 15 '11 at 10:37
rics
2,272●1●8●25
added Jun 6 '11 at 7:10
sam
860●3●25
added May 27 '11 at 6:31
Gary Tsui
987●1●10
added May 26 '11 at 16:55
Kevin Vermeer ♦ 1
20.2k●2●38●144
added May 12 '11 at 8:30
Reuben Mallaby
2,729●2●9●16
added May 10 '11 at 5:19
Yunus
1,684●7●19
added May 7 '11 at 21:54
user37409
51●1
added May 6 '11 at 0:51
Bradley Powers
57●3
added May 3 '11 at 10:07
imeht
129●5
added May 1 '11 at 4:53
Ganesh
1,455●5●33
added Apr 30 '11 at 19:28
Paweł Dyda
7,689●3●14●47
added Apr 30 '11 at 13:23
RegDwight ♦ 2
44.5k●12●137●282
added Apr 27 '11 at 14:19
Zifei Tong
1,580●2●19
added Apr 21 '11 at 18:37
faraz karimian
932●3●14
added Apr 15 '11 at 12:30
user36357
51●2
added Apr 15 '11 at 9:10
ogerard
8,466●23●114
added Apr 14 '11 at 14:33
M'vy
18.3k●2●29●163
added Apr 12 '11 at 22:45
user36224
51●1
added Apr 8 '11 at 16:00
neural_ck
69●3
added Apr 7 '11 at 15:11
roseck
7,176●17●97
added Apr 5 '11 at 11:41
SilentCoyote
51●3
added Mar 24 '11 at 15:04
robf
51●1
feed icon proposal feed
faq | blog | legal | contact us | feedback always welcome
site design / logo © 2011 stack exchange, inc.; user contributions licensed under cc-wiki with attribution required
rev 2012.5.14.62