Mesher for LiveScan3D is a Meshlab-based app that allows you to process pointcloud files generated with a special version of LiveScan3D to a polygonal mesh. The special version can be found here: https://github.com/ChristopherRemde/LiveScan3D (You need to switch the branch to "CameraPoseExport")
You need to install Meshlab v2016.12 on your computer: https://github.com/cnr-isti-vclab/meshlab/releases/tag/v2016.12
To get the current release of Mesher for LiveScan 3D, click on the "Releases" Tab. Note that currently only x64 Windows is supported. Download the .exe and open it. The command-line interface will guide you through the rest of the process. The paths you need to input can be simply copy and pasted from your windows explorer.
Note! Only files generated with the special version of LiveScan3D are supported, make sure to use it while recording!