In this article from Intertek they explain in detail how to create 3D CAD models from laser scan point cloud data in a complex plant environment.
As they explain:
“There are two types of CAD models produced from laser scan data, simple geometric models and intelligent models. A geometric model is the basic shape of the pipe or flange with a centreline. The LFM software analyses thousands of points on the pipe and precisely fits a CAD element to them with millimetre accuracy. The resulting pipe model only contains basic geometry such as the diameter and length of the pipe.
Intelligent models are similar to geometric models, however, when analysing the points to fit the CAD element the LFM software references international standards tables for piping such as ANSI for the type of pipe that best suits the data. When created, this model provides much more specific information such as the pressure rating for the pipe and what type of valves, flanges and other associated equipment are designed to work with it.
The following video demonstrates how to create an isometric from the CAD model.
it is belong to BIM which contains geometry and semantic information .
It’s incredibly convenient to have an intelligent model provide that sort of information for you, especially if you’re working with a deadline that provides little time for tracking down the parts you need. However, if time isn’t as important of a factor, using a geometric model and finding the right pieces yourself works just as well, just not as quickly. Thanks for sharing.