How do you determine the real-world 3D point coordinates

[y2w77]

Hello, thank you for sharing the knowledge. How do you determine the real-world 3D point coordinates, which is this paragraph in the code:objectPoints = np.array([[2.37427, 110.322, 21.7776],
[70.0602, 109.898, 20.8234],
[36.8301, 78.3185, 52.0345],
[14.8498, 51.0115, 30.2378],
[58.1825, 51.0115, 29.6224]])