Camera calibration is the process by which the different camera parameters are obtained. You can obviously use the specifications provided by the camera manufacturer, but for some tasks, such as 3D reconstruction, these specifications are not accurate enough. Camera calibration works by showing known patterns to the camera and analyzing the obtained images. An optimization process will then determine the optimal parameter values that explain the observations. This is a complex process that has been made easy by the availability of OpenCV's calibration functions.
Calibrating a camera
Getting ready
To calibrate a camera, you show it a set of scene points where the 3D positions are known. Then, you need to observe where...
