Calibrate camera charuco

1. What is camera calibration in computer vision?
2. What are Tvecs and Rvecs?
3. What is Charuco?

What is camera calibration in computer vision?

Geometric camera calibration, also referred to as camera resectioning, estimates the parameters of a lens and image sensor of an image or video camera. You can use these parameters to correct for lens distortion, measure the size of an object in world units, or determine the location of the camera in the scene.

What are Tvecs and Rvecs?

The rvec and tvec are the transformations used to get the position of any other 3D point(in the world reference frame) w.r.t the camera coordinate system. So both these vectors are the extrinsic parameters [R|t]. The intrinsic parameters are generally derived from calibration.

What is Charuco?

Charuco definition. The ArUco part is used to interpolate the position of the chessboard corners, so that it has the versatility of marker boards, since it allows occlusions or partial views. Moreover, since the interpolated corners belong to a chessboard, they are very accurate in terms of subpixel accuracy.