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Questions tagged [stereo-3d]

This tag should only be used for issues directly related to binocular graphical rendering. If you are not displaying different graphical images to the left and right eyes, do not use this tag.

This tag should only be used for issues directly related to binocular graphical rendering. If you are not displaying different graphical images to the left and right eyes, do not use this tag.

Stereo 3D refers to a class of techniques for displaying two different images to a viewer's left and right eyes.

For other types of solid model rendering, use , or a tag specific to your platform.

473 questions
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Absolute depth from iPhone X back camera using disparity from AVDepthData?

I'm trying to estimate the absolute depth (in meters) from an AVDepthData object based on this equation: depth = baseline x focal_length / (disparity + d_offset). I have all the parameters from cameraCalibrationData, but does this still apply to an…
Wes W.
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Problem with stereo rectification using OpenCV and Python

I am working on a stereo camera rig with 4 discrete cameras (of the same type) but at the moment only one pair (cam1 and cam2) are necessary. The aim is to calibrate the stereo pair and get 3D information about the scene. I am using Python 3.6 with…
Guido
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Point Cloud from KITTI stereo images

I try to create a Point Cloud based on the images from the KITTI stereo images dataset so then later I could estimate 3D position of some objects. Original images looks like this. What I have so far: generated disparity with…
EugeneB
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Stereo Disparity map generation

I am working on KITTI data set i am taking 2 images and finding the disparity to get 3D point cloud .The problem which i am facing is that i am not able to get a good disparity map.Most of the disparity value is less than 0.1 .The disparity values…
shashank bhushan
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OpenCV Stereo rectification from manually created matrices

I am currently working on a 3d reconstruction of X-Ray images, and therefore I need to stereo-rectify images of two views before I can match some features with help of the epilines. I am using OpenCV 2.4 with C++. For this purpose I got a set of…
bumuckl
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In a calibrated stereo-vision rig, how does one obtain the "camera matrices" needed for implementing a 3D triangulation algorithm?

I am trying to implement the (relatively simple) linear homogeneous (DLT) 3D triangulation method from Hartley & Zisserman's "Multiple View Geometry" (sec 12.2), with the aim of implementing their full, "optimal algorithm" in the future. Right now,…
neuviemeporte
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Is it possible to run Java3D applications on Nvidia 3D Vision hardware in windowed mode?

Thanks to JohnnyO it was already answered if it is possible to run Java3D application in conjunction with nVidia 3D vision: Is it possible to run Java3D applications on Nvidia 3D Vision hardware? His approach also worked fine for me. But it is…
Sommer
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cvReprojectImageTo3D -3d modelling from 2d images issue-

i need your help about this issue badly. i am trying to model a simple scene in 3d out of 2d images. i am using 2 images (left and right-the famous tsukuba…
ardavar
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Convert between MATLAB stereoParameters and OpenCV stereoRectify stereo calibration

I wish to convert a MATLAB stereoParameters structure to intrinsics and extrinsics matrices to use in OpenCV's stereoRectify. If I understood http://docs.opencv.org/2.4/modules/calib3d/doc/camera_calibration_and_3d_reconstruction.html and…
Gnubie
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What's the difference between reprojectImageto3D(OpenCV) and disparity to 3D coordinates?

I'm trying to get 3D coordinates with a stereo camera. The first method is to calculate directly using this formula. The second method is to use reprojectImageTo3D in opencv. But I do not know the principle of this method. The result is not in…
user6445248
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Rotation and Translation from Essential Matrix incorrect

I currently have a stereo camera setup. I have calibrated both cameras and have the intrinsic matrix for both cameras K1 and K2. K1 = [2297.311, 0, 319.498; 0, 2297.313, 239.499; 0, 0, 1]; K2 =…
user1431515
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Getting depth map

I can't get normal depth map from disparity. Here is my code: #include "opencv2/core/core.hpp" #include "opencv2/calib3d/calib3d.hpp" #include #include #include…
Aram Gevorgyan
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Minimum number of chessboard images for Stereo Calibration and Rectification

What is the minimum number of chessboard image pairs in order to mathematically calibrate and rectify two cameras ? One pair is considered as a single view of the chessboard by each camera, ending with a left and right image of the same scene. As…
Chris
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stereoCalibrate() changes focal lengths even when it was not supposed to

I noticed that opencv stereoCalibrate() changes the focal lengths in camera matrices even though I've set appropriate flag (ie CV_CALIB_FIX_FOCAL_LENGTH). I'm using two identical cameras with the same focal length set mechanically on lens and…
marol
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Getting real depth from disparity map

I want to get real distance of an object from stereo camera. I am using OpenCV example code as given in Learning OpenCV O'Reilly book. After getting disparity map I want to use the formula: distance = focal_length * baseline distance / disparity…
user3291650
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