I am learning camera matrix stuff. I already known that I can get the homography of the camera (3*3 matrix) by using four points in a plane in object space. I want to know if we can get the homagra...

Is there a free-access database containing camera calibration parameters (camera matrices, intrinsic and extrinsic parameters) for the most popular devices? I'm particularly interested in mobile-p...

I am calibrating an industrial AVT camera. Is it ok, when I focus on the plane where I will do my measurements with the f/4 aperture then close the aperture to f/16, calibrate the internal paramete...

I tried determining camera motion from fundamental matrix using opencv. I'm currently using optical flow to track movement of points in every other frame. Essential matrix is being derived from fun...

How do we use the function apple provides (below) to perform rectilinear conversion? Apple provides a reference implementation in 'AVCameraCalibrationData.h' on how to correct images for lens dist...

I'm in some trouble getting the charuco camera calibration to work. To the best of my knowledge, I do everything right, but the final undistorted images are very much more warped than expected. It ...

After checking several pieces of codes, I took several shots, found the chessboard corners and use them to get the camera matrix, distortion coefficients, rotation, and translation vectors. Now, ...

I am using opencv to calibrate my webcam. So, what I have done is fixed my webcam to a rig, so that it stays static and I have used a chessboard calibration pattern and moved it in front of the cam...

I am trying to get a 3x4 camera matrix for triangulation process but calibrateCamera() returns only 3x3 and 4x1 matrices. How can i get the 3x4 out of those matrices? Thanks in advance!!

I'm trying to computing the exact prospective transformation of a 3D object starting from a vanishing points and horizon line of a picture. What I want is, fixed the vanishing points and horizon...

stereoParameters takes two extrinsic parameters: RotationOfCamera2 and TranslationOfCamera2. The problem is that the documentation is a not very detailed about what RotationOfCamera2 really means,...

I get the following error when I try to calibrate camera using cv2.calibrateCamera: rms, camera_matrix, dist_coefs, rvecs, tvecs = cv2.calibrateCamera(pts3d, pts2d, self.imgsize, None, None) cv2.e...

I am trying to use StereoBM to get disparity map of two images. I tried some sample code and images. They are working fine. However, when I try my own images, I got very bad map, very noisy. ...

I am using OpenCV to estimate a webcam's intrinsic matrix from a series of chessboard images - as detailed in this tutorial, and reverse project a pixel to a direction (in term of azimuth/elevation...

There are some measured results available for certain older ios devices but I'm not able to find FOV numbers for newer models, specifically, iPhone 5s ~ 6s Plus and iPad 4 ~ iPad Pro. Also, the num...

I'm using a wide-angle lens (178º Diagonal FOV ) and I'm trying to calibrate it properly using Opencv Calibration module. All the detection and calibration process are working fine, but the result ...

I know the default OpenCV Calibration systems model a Pinhole camera, but I'm working with a system using extremely wide FOV lens (187-degrees). If there any existing way to do this in OpenCV, or t...

I have the following image I1. I did not capture it. I downloaded it from Google I apply a known homography H to I1 to obtain the following image I2. I want to assume that a camera has taken ...

I have been using cv::StereoBM for a while, and am trying to switch to cuda::StereoBM (uses the GPU) but have run into a problem where they look completely different, even with the same settings an...

Originally I have a image with a perfect circle grid, denoted as A I add some lens distortion and perspective transformation to it, and it becomes B In camera calibration, A would be my destinati...

I am trying to render views of a 3D mesh in VTK, I am doing the following: vtkSmartPointer<vtkRenderWindow> render_win = vtkSmartPointer<vtkRenderWindow>::New(); vtkSmartPointer<vtk...

I'm getting results I don't expect when I use OpenCV 3.0 calibrateCamera. Here is my algorithm: Load in 30 image points Load in 30 corresponding world points (coplanar in this case) Use points to...

I am trying to calibrate a camera with a fisheye lens. I therefor used the fisheye lens module, but keep getting strange results no matter what distortion parameters I fix. This is the input image ...

I'm trying to do calibration of Kinect camera and external camera, with Emgu/OpenCV. I'm stuck and I would really appreciate any help. I've choose do this via fundamental matrix, i.e. epipolar ge...

I am developing an application for the iPhone using opencv. I have to use the method solvePnPRansac: http://opencv.willowgarage.com/documentation/cpp/camera_calibration_and_3d_reconstruction.html ...