camera_calibration | Camera calibration using OpenCV | Camera library

I'm trying to compile camera_calibration on OSX 10.11 and after a few hurdles with a few X11 related dependencies I find myself still stuck with a few linking errors:

I am new to ROS and its developing. By following this link. i try to calibrate uvc camera. Installation of calibration package and Installation of uvc_camera package are done. After i try to run

I am currently experimenting with ORB SLAM 2 and a stereo camera like this. I am using 2.8mm and optionally 3.6mm lenses with a resolution of 640x480 pixels for the left and right camera/image.

ORB SLAM 2 lets me define several distortion/rectifying parameters withing the settings file (*.yaml), such as:

I am using ROS to control a drone for real-time image processing applications. I have calibrated camera by using cameracalibrator.py node in Ros. When I use image_proc node to compare raw and rectified images, I don't get what I want. Although image is rectified, border of the image is getting distorted toward opposite direction as the image below:

As a result, rectified image is still useless for me.

Thus, this time, I calibrated my camera using opencv so that I can get region of interest (ROI) in the image after undistortion operation. Thus, the rectified image becomes perfect for me. However, I need ROS to do that while streaming rectified image by using image_proc. Is there anyway to do that ?

I am trying to write a cmake.I will use OpenGL, SDL and OpenCV together. The things is cmake operation is done properly but if I enter make command, it says that "No such file or directory" for SDL/SDL.h

my cmake is like this:

I'm using the code provided by opencv for camera calibration. I've edited the settings file to contain my own directories, and it looks like this:

I try to calibrate camera with ultra wide angle lens > 180 degrees. I use OpenCV 3.2 and camera calibration code from opencv/samples/cpp/tutorial_code/calib3d/camera_calibration, as a result I get image similar to this one from this post. I found numerous movies on youtube.com on which people show how they calibrate fisheye cameras, for example this video.

I know that calibration of ultra wide lenses cameras could be tricky. I also found that there are another then standard model for fisheye camera calibrations in openCV contrib

Is it possible to use camera calibration model from standard OpenCV to calibrate such a wide angle camera or should I use another model e.g., from openCV contrib?

The "camera_calibration" is a sample of calib3d in OpenCV. In this folder, a file named "VID5.xml" listing the images for running. But I could not find these jpg files in OpenCV source.

Thanks.

My camera has different resolutions 1280*480 640*240 320*120

I have used the algorithm of Opencv3 to calibrate the camera with the resolution of 1280*480 and I have got the camera matrix (fx fy cx cy)and the distortion matrix (k1 k2 p1 p2 k3)for this resolution.

But now I want to use these camera matrix and distortion matrix to calibrate the camera with the resolution of 320*120. I don't know how to apply these two matrix of the resolution 1280*480 to the resolution of 320*120. PS I haven't calibrated the camera with the resolution of 320*120 directly because the image is too small and the algorithm of Opencv can't find the chessboard.

I want to know how the camera matrix (fx fy cx cy)and the distortion matrix (k1 k2 p1 p2 k3) will change if i change the resolution 1280*480 to 320*120.

The algorithm of opencv is the following one: http://docs.opencv.org/3.0-beta/doc/tutorials/calib3d/camera_calibration/camera_calibration.html