[PointCloud] Handling Point Cloud From PyRealSense2

[NguyenDuyDuc1995]

Hi,

I read the code from the link below to visualize the point cloud from pyRealSense2.
https://github.com/isl-org/Open3D/blob/master/examples/python/reconstruction_system/sensors/realsense_pcd_visualizer.py

I do not understand this code line: vis.poll_events()
What does it do?

Thanks

[NguyenDuyDuc1995]

I have one more question.
After I create the point cloud from a depth frame and a color frame, can I get (x,y,z) world coordinate from (x,y) pixel coordinate?
Thank a lot.