This video is a demonstration of an open-source Unity application that allows for streaming and displaying 3D point clouds on HoloLens.
The source code of the application can be downloaded here:
https://github.com/MarekKowalski/LiveScan3D-Hololens

For more info about me and my projects check out my website: http://home.elka.pw.edu.pl/~mkowals6/