Hi all, I am not familiar with Calib3d.calibrateCamera(). Is it possible to calibrate the camera without the use of a checkered chessboard pattern? If so, how would the objectPoints and imagePoints be defined?
Looking at the description for ObjectPoints on https://docs.opencv.org/3.2.0/d9/d0c/group__calib3d.html, can I feed the detected features of a 2D image as my ObjectPoint and assign the Z-axis to 0? Then feed the detected features of another image taken in the same scene as the imagePoints?