Questions tagged [stereo-vision]
stereo vision is the extraction of 3D information from digital images, such as obtained by a CCD camera.
20
questions with no upvoted or accepted answers
3
votes
0answers
583 views
real-time stereo vision system for long range (up to 100m) depth estimation
I want to implement a FPGA-based real-time stereo vision system for long range (up to 100m) depth estimation. Also, I want to use two ip cameras in the system. I have calculated depth error using the ...
3
votes
0answers
348 views
Triangulation from calibrated stereo rig
I am using a stereo rig to do SLAM, calibrated using the MATLAB Calibration Tool. I need to compute the 2D coordinates of a landmark using the observation model obtained from triangulation (the images ...
2
votes
0answers
31 views
Choosing cameras for stereo vision system?
I'm in the process of building a stereo vision system with YOLO detection. The system have to detect airplanes in far distance and also measure the depth from the airplane to the camera. I think ...
2
votes
0answers
32 views
Disparity error in active light stereo systems?
Based on this relationship, if we have to estimate the 'disparity error' of a stereo system which uses active light on the scene - can we estimate the disparity error to be very small? According to ...
2
votes
0answers
82 views
Stereo Rectification when Extrinsics are known
Suppose I have two cameras $C_1$ and $C_2$ arranged in a stereo configuration. Let us assume that the camera is free of distortion with ideal intrinsics and that the camera extrinsics $R$ and $t$ are ...
2
votes
0answers
76 views
Effectiveness of visual odometry algorithms (CPU usage)
My robot needs to obtain visual odometry, with a condition that the used algorithm has to have as low computational requirements as possible and the used camera/sensor shouldn't be very expensive. The ...
2
votes
0answers
48 views
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 ...
1
vote
0answers
28 views
Ground based path generation from RGBD camera
How does one generate a trajectory for a ground vehicle using an RGBD camera? For a drone it's simpler since you're not constrained by having to move on the ground but it's not clear to me how ...
1
vote
0answers
23 views
Size of smallest feature from pixel depth resolution
How do I get the size in mm of the smallest feature a depth camera can detect?
Known variables are: distance from the target (for instance 1 meter), depth resolution in pixels (for instance 1280 x 720)...
1
vote
0answers
19 views
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 ...
1
vote
0answers
41 views
Stereo-Calibration with Variable focal cameras
Is it possible to perform stereo-calibration with cameras having variable focus? and if so, how is it done basically?
1
vote
0answers
58 views
Tracking object in realtime using depth image stream from a RGBD camera
I have an Intel RealSense camera which can stream RGB and depth image. Using those information I want to track an object moving on a table top. More specifically, I want to know position $(x,y)$ and ...
1
vote
0answers
202 views
Stereo vision setup to obtain depth map
I am currently working on a project that requires me to obtain depth information and point cloud map of objects in an indoor environment ( roughly twice the size of a normal room). I would like to ...
1
vote
0answers
120 views
Camera calibration sequence with ground truth data
I'm looking for a SLAM dataset (monocular or stereo) specifically with a checkerboard, meaning the camera always has a checkerboard in frame.
Most popular datasets provide calibration sequences, ...
1
vote
0answers
84 views
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....
1
vote
0answers
204 views
Scaling monocular SLAM with another source?
I have implemented a stable monocular slam tracking system, based on ORBSLAM2. I am trying to find a way to add real-world distance/scale to this.
At the same time, I am running a (less stable) ...
0
votes
0answers
11 views
How to find fundamental matrix based on other fundamental matrix and camera movement?
I am trying to speed up some multi-camera system that relies on calculation of fundamental matrices between each camera pair.
Please notice the following is pseudocode. ...
0
votes
1answer
21 views
Explanation of the epipolar constraint in stereo imaging
I am watching this video, in which the epipolar constraint is defined as
$x_l \cdot (x_l \times t)=0$
It means that the vector $x_l$ that passes through the observed point and the left camera origin ...
0
votes
0answers
51 views
Cheap global shutter cameras with external synchronization
Please recommend cameras for multi-camera setup satisfying the following conditions:
Relatively cheap (up to 100$ per camera).
Global shutter.
No filters on lenses or pixels.
Resolution of 1 MP or ...
0
votes
0answers
19 views
Single Camera + Laser Projector Triangulation
I want to combine a laser line projector (projects a laser plane) and a single web camera to determine the X, Y, Z position of the laser point. I am slightly confused as to how to use the fact that we ...