How do you account for the human movement in background modeling?

[xiyichen]

I noticed that you centered the human bounding box as origin for each frame. In that case, if the human moves, wouldn't the same 3d coordinate represent different locations in the background in different frames? How is this accounted for in background modeling?

[KHao123]

I have the same problem about the camera pose. How do you understand this process? Thank you!