Multi camera stereo calibration

Multi camera stereo calibration includes two parts ：

1. Calibration of multiple calibration plates ： Use a camera to calibrate the spatial relationship between the calibration plates ;

2. Multi camera calibration ： Based on the results of the first step , Calibrate the position relationship between cameras ;

Calibration plate recommendation ：

More cameras , The more you can't see the full chessboard calibration board , have access to AprilGrid Calibration plate