Questions tagged [stereo-vision]
stereo vision is the extraction of 3D information from digital images, such as obtained by a CCD camera.
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questions with no upvoted or accepted answers
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Assistance in finding correct LIDAR for short-range object detection task
I am working on a task that involves finding a distance of a moving object going a static linear object, e.g a long pole. After trying some approaches (mostly involving stereo vision), I have come up ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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)...
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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 ...
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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?
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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 ...
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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 ...
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114 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, ...
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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....
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199 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) ...
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47 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 ...
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77 views
ROS2 Stereo View Fails And Stereo Image Proc Doesn't Show Anything
I have set up 2 Monocular Cameras as a stereo camera in ROS2. I successfully published the 2 rectified and calibrated images through the following formats:
...
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Is there any way to know whether the disparity is negative without stereo rectification?
For one stereo camera, stereo calibration is performed to obtain intrinsic and extrinsic parameters during manufacturing.
During the process of usage, intrinsic and extrinsic parameters may be changed,...
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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 ...