Questions tagged [stereo-vision]

stereo vision is the extraction of 3D information from digital images, such as obtained by a CCD camera.

stereo vision is the extraction of 3D information from digital images, such as obtained by a CCD camera.

100 questions
6
votes
2 answers

Estimate Disparity Error for Depth Accuracy Estimation

I would like to get a rough estimate of the depth accuracy / uncertainty of a stereo camera system. For this I would like to use the basic formula in the attached image. What is still unclear to me is what's a reasonable choice for the disparity…
Silvan
  • 91
  • 1
  • 5
2
votes
1 answer

Stereo vision on a moving vehicle

When I put stereo camera on a moving platform and sync the cameras, what kind of delay between the cameras is tolerable? This would probably depend on the motion, but are there some guidelines? Are there any practitioner guides on how to build a…
Alex Kreimer
  • 123
  • 3
2
votes
0 answers

What is the effect that the size of the correlation window (in pixels) has on the matching performance of stereo algorithms?

While stereo algorithms perform matching, they usually compare pixels within a region around the feature. I would like to know what effect the size of that search window has on the matching performance. And what sort of features don't get detected…
simplename
  • 165
  • 7
1
vote
2 answers

How to set up binocular cameras on a car?

I am trying to set up my stereo vision system on a car. However, I meet several problems and do not know how to solve them. How to select the baseline? I want the distance measurement to be far at 30 or 50 meters and near at around 5-10m. Is it…
xuehy
  • 73
  • 4
1
vote
0 answers

Triangulation in Stereo-Vision?

I need some help in 3D Positioning system I'm trying to set up. At the moment I am using 2 Calibrated cameras, my strategy is to place an AR Marker on the scene, identify the position of the AR Marker in the two different (left & right) images, and…
r4bb1t
  • 161
  • 5
1
vote
0 answers

Accuracy of stereovision camera

I want to use stereovision to get 3D coordinates of a point in the camera's frame. Let's say, I can zoom in and click in the image to select my point of interest. I want an accuracy of about 0.05 - 0.1mm. How do I select such a stereo camera? I…
vinjk
  • 77
  • 8
1
vote
2 answers

Stereo camera pair focal lengths

I came across the standard representation of stereo cameras where they are side to side and the epipolar lines are the same image scan line and the cameras have the same focal length. Source: http://vision.deis.unibo.it/~smatt Now, do all stereo…
simplename
  • 165
  • 7
0
votes
1 answer

Selecting hardware: stereo camera for beginners

I'm looking for some cheap hardware that would offer me results decent enough to continue my experimentation. I've been looking into how to obtain hardware for learning about stereo vision and 3D reconstruction, I found two basic ways: - buy 2 cheap…
Cesar
  • 133
  • 4
0
votes
1 answer

Number of pixel comparison needed to establish correspondence

I am reading the paper titled Variable Baseline/Resolution Stereo David Gallup, Jan-Michael Frahm, Philippos Mordohai, Marc Pollefeys Section 3 of the paper talks about the time complexity of the standard stereo, within it, subsection for fixed…
vyi
  • 215
  • 1
  • 9
0
votes
1 answer

disparity error to x and y accuracy

This question talks about the depth error ($\Delta$Z) as a function of disparity error ($\Delta$D). I want to do the same for X and Y How would we quantify $\Delta$X and $\Delta$Y w.r.t. $\Delta$D
simplename
  • 165
  • 7