I calibrated my mono camera using opencv. Now I know the camera intrinsic matrix and distortion coefs [K1, K2, P1 ,P2,K3 ,K4, K5, K6] of my camera. Assuming that camera is place in [x, y, z] with [...

I have a task to locate an object in 3D coordinate system. Since I have to get almost exact X and Y coordinate, I decided to track one color marker with known Z coordinate that will be placed on th...

I have the intrisic and extrinsic parameters of the camera. The extrinsic is a 4 x 4 matrix with rotation and translation. I have sample data as under, I have this one per camera image taken. 2....

In the pinhole camera model there is only one focal length which is between the principal point and the camera center. However, after calculating the camera's intrinsic parameters, the matrix cont...

I am trying to get the bird's eye view perspective transform from camera intrinsic, extrinsic matrices and distortion coefficients. I tried using the answer from this question. The image used is...

I am reading up on homographies and i have seen some places that it says that the homography is defined "up to a scale factor" what does this mean? Is there an upper limit for scaling the homograph...

I'm trying to verify my camera calibration, so I'd like to rectify the calibration images. I expect that this will involve using a call to warpPerspective but I do not see an obvious function that ...

I was trying to replicate this camera calibration code. When I run my script, the calibration process won't stop for about 30 minutes (I expected the intrinsic camera matrix for the output). What ...

Suppose I have got the face euler angles (pitch, yaw, roll). How can draw the 3D Coordinate Axes which show the face pose? Here is an example from here:

Given a set of 2D points, how can I apply the opposite of undistortPoints? I have the camera intrinsics and distCoeffs and would like to (for example) create a square, and distort it as if the came...

I have an image of a colorchecker captured with a digital camera, how do I use this to calibrate (color-correct) the images using opencv? See below the colorchecker image:

I am calibrating my camera following a tutorial. I understand the whole process of finding the intrinsic parameter and the distortion coefficients of the camera using the chessboard. What I don't u...

I'm kind of confused about the Reprojection Error during camera calibration. I understood that the Reprojection Error describes the differences between the detected point and the world point. I eve...

I got camera intrinsic matrix and distortion parameters using camera calibration. The unit of the focal length is pixels, i guess. Then, how can i calculate field of view (along y) ? Is this f...

I have to do camera calibration. I understand the general concept and I have it working, but in many guides it says to use many images or at the very least two with different orientation. Why exact...

Consider the following diagram and equations representing a pinhole camera: Suppose the image size is W times H pixels, and that there is no nonlinear distortion. To compute the field of vi...

I'm receiving depth images of a tof camera via MATLAB. the delivered drivers of the tof camera to compute x,y,z coordinates out of the depth image are using openCV function, which are implemented i...

My goal: I am trying to get the TruthDepth camera parameters (such as the intrinsic, extrinsic, lens distortion etc) for the TruthDepth camera while I am doing the face tracking. I read that there ...

iOS provides lens distortion information for images obtained with the iPhone depth cameras, specifically the front-facing TrueDepth camera and the rear-facing Portrait mode camera. These lens disto...

I accessed calibration files from part odometry of KITTI, wherein contents of one calibration file are as follows: P0: 7.188560000000e+02 0.000000000000e+00 6.071928000000e+02 0.000000000000e+00 0...

I am using OpenCV to calibrate images taken using cameras with fish-eye lenses. The functions I am using are: findChessboardCorners(...); to find the corners of the calibration pattern. cornerSu...

I am working on the KITTI dataset. I have downloaded the object dataset (left and right) and camera calibration matrices of the object set. I want to use the stereo information. But I don't know h...

I have got a calibrated multi-camera system. Both the internal (focal length, distortion, etc) and external (poses) camera parameters have been estimated using HALCON-based program. Now, the goal i...

The quality of calibration is measured by the reprojection error (is there an alternative?), which requires a knowledge world coordinates of some 3d point(s). Is there a simple way to produce such...

I am doing camera calibration from tsai algo. I got intrensic and extrinsic matrix, but how can I reconstruct the 3D coordinates from that inormation? 1) I can use Gaussian Elimination for find...