Laser Scanning :
The building or Object is scanned by a device that generates its point cloud 3d model with high quality and precision up to 2 mm.
Scan To BIM :
Scan to BIM is where the BIM models are created by a scan provided in form of a point cloud.
The Scan is a form of point cloud of a the model of a building or object on to which it is worked on to create its BIM model with impeccable precision and quality with details.