I am wondering how many images are recommended to calibrate a camera using the chessboard corners approach. Should I use 5, 10, 20? Also, if 10 is a good number, for example, is there any benefit of using more?
Further, is there any advantage to moving the chessboard around in the image? That is, should I try and take pictures with the chessboard placed at all the parts of the image or are multiple images of the chessboard at the same location just as good.
Any help appreciated.
Regards, James