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Re-Engineeing NURBS surfaces from scanned point clouds

This PointCloud is the result of several 3D captures from different locations, which have been stitched together.

There are areas where the points are pretty dense and others with a few points only.
 

 


   

Rough Mesh

The imported points have been converted to a rough mesh (_MeshFromPoints) just for an overall impression of the hull. As you can see there are many areas where the points are not dense enough to create a mesh without holes.
 

 


 

Symmetry

Usually the scan is not perfectly symmetrical. The following page shows how to get a symmetrical model from the entire scan data.
 

 


 

Cleanup and subdividing the PointCloud

The PointCloud has been exploded and smaller PointClouds have been created, which represents a logical NURBS topology that can describe this shape with simple and fair surfaces. Blends have been separated to get sharp edges that can be filleted or blended later. Points which are located far off from the shape have been removed. Areas with poor point density were filled manually.
 

 

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