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Method for Multiple Camera (more than 2) Stereo Calibration


For my project I am looking at using 4 to 8 cameras in order to obtain 3D keypoints (joint centers) on a person walking around an 8m x 3m x 2m capture volume. I am using a ChArUco board for calibration and capturing videos/images of the board at various poses. So far I have successfully calibrated camera intrinsic parameters for each camera, and I have performed stereo calibration with a pair of cameras.

I am curious as to how I should go about expanding this to a setup with various cameras (4+). Is it as simple as creating multiple stereo pairs ( [1,2], [2,3], [3,4] ), or is there a better way to go about this? I have heard some about bundle adjustment but I am not quite sure that is what I am looking for.

Let me know if you need any other information about my project/plans! Thanks.