Extract Sphere Centers from Point Cloud    

Creates a point group by extracting sphere centers from a point cloud generated by a raster-format scanner (Sur- phaser scanner or FARO Photon scanner, for example).

 

Input Arguments

 

0

Collection Object Name

Cloud Name

The name of the point cloud in which to search for spheres.

1

Double

Desired Diameter

The nominal diameter of the spheres.

 

2

 

Double

 

Extraction Tolerance

The allowable tolerance on the desired diam- eter. Spheres exceeding this tolerance are not extracted.

3

Integer

Minimum Point Count

The minimum number of points required for the sphere fit. If less points are detected, the sphere is

not extracted.

4

Collection Object Name

Group Name for Points

The group into which to place the extracted sphere centers.

5

Boolean

Perform Final Fit

True performs the ASTM fit algorithm

6

Double

Final Fit Cone Angle

Cone angle to apply

 

Return Arguments

 

5

Integer

Number of Points Extracted

The number of center points extracted from the cloud.

 

Returned Status

 

SUCCESS

The points were extracted successfully.

FAILURE

The source cloud was not found.

 

Remarks

When the Final Fit Boolean (A5) is set to True a more advance sphere fit is used. This method employs the standard sphere extraction method defined in ASME E3125-17. This method uses the instrument shot line to improve outlier rejection and further refine the location of the sphere center point.