CAD Design and REVIT
Point Clouds in CAD and Revit Models: Scan data can play an important if not vital role in the accuracy of creating as-built models. Kohera3D's Scan-To-Plan laser scanning and modeling solutions are designed to not only increase
the accuracy in modeling, but to make the CAD modeler/designer's job easier and highly productive. Point clouds are necessary for as-built accuracy, but they are not always easy to work with. Kohera3D's point cloud isolation along with a tight point cloud registration
can take away much of the headache and frustrations that come with modeling inside your scan data. We often refer to a point cloud as "the blob". Quite honestly it feels like one too. But once the data is isolated into groups that can be turned off from view, designers
can focus only on what one needs to model, such as the walls in a building, or to follow and model a pipe run. Isolation removes the challenges of working inside the "blob", and the scan data (or point cloud) becomes easier to work with and easier to manage.
Images below are of an isolated point cloud. As seen here elements surrounding the building have been turned off. Walls, floors,
ceilings, and columns are also assigned to their own layers prior to completing the model. Note: Video above shows this process in detail.
Isolated point cloud. Walls,
ceilings, doors, etc., can be turned on and off
As-built building model created inside the point cloud model
Overlay comparison of the building model and point cloud model
The point cloud below was first isolated which allowed us to place items onto separate layers. The wall layer is colored red and the doors have been colored blue. Modeling in CAD or Revit when a point cloud has been isolated into layers allows the designer to focus
on a chosen area without clutter or blockage from other items in the scan data. Here we were able to turn off the doors to model only the walls, then turn the doors back on and install them to their correct location as seen inside the point cloud.
Note: If the doors are open during the scanning, their swing direction will be seen as well.
Point cloud only with isolated walls and doors turned on
Using scan data to create as-built architecture plans