Exercise: Extract features from a point cloud

Unlike the best Feature computation commands which use all points of an object, the commands to extract features try to find the best feature from a seed of point(s).

Open the file AlignOnRef.3dr.


Circle

To extract the dimensions of a hole in this mechanical part, launch Region Grow Circle. Set the Extraction tolerance to 0.5mm and click a point close to the border of the hole.

images/download/attachments/122260109/image2020-3-26_16-16-48.png Extract Circle - Region Grow


  • You can set some parameters (Center, Normal, Radius). The distance between the extracted feature and the original points is visualized using the color gradient.

  • You can generate a label or the extracted points if you wish by checking the corresponding options.

  • Click OK, Next to validate the circle or OK, Exit to validate and exit the command.


images/download/attachments/122260109/image2020-3-26_16-27-22.png Circle, cylinder and plane extracted from the cloud