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Computes the mass center of a shape.

Name Type Description
inShape Path
outMassCenter Point2D


The operation computes the mass center of a shape bounded by a closed path.

Note that if the input path is not a valid shape (i.e. it has at least one self-intersection), the computation may lead to results that are not intuitive.


The resulting outMassCenters drawn onto the sample shapes.


This filter can throw an exception to report error. Read how to deal with errors in Error Handling.

List of possible exceptions:

Error type Description
DomainError Degenerate shape on input in ShapeMassCenter.
DomainError Open path on input in ShapeMassCenter.

Complexity Level

This filter is available on Basic Complexity Level.

See Also

  • PathMassCenter – Computes the average of the path points (all, not only characteristic ones).
  • RegionMassCenter – Computes a point with coordinates equal to the average coordinates of the region's pixels.