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Merge Twins

Group (Subgroup)

Reconstruction (Grouping)

Description

This Filter groups neighboring Features that are in a twin relationship with each other (currently only FCC σ = 3 twins). The algorithm for grouping the Features is analogous to the algorithm for segmenting the Features - only the average orientation of the Features are used instead of the orientations of the individual Elements. The user can specify a tolerance on both the axis and the angle that defines the twin relationship (i.e., a tolerance of 1 degree for both tolerances would allow the neighboring Features to be grouped if their misorientation was between 59-61 degrees about an axis within 1 degree of <111>, since the Sigma 3 twin relationship is 60 degrees about <111>).

Parameters

Name Type Description
Axis Tolerance (Degrees) float Tolerance allowed when comparing the axis part of the axis-angle representation of the misorientation
Angle Tolerance (Degrees) float Tolerance allowed when comparing the angle part of the axis-angle representation of the misorientation

Required Geometry

Not Applicable

Required Objects

Kind Default Name Type Component Dimensions Description
Feature Attribute Array NonContiguousNeighbors List of int32_t (1) List of non-contiguous neighbors for each Feature. Only needed if Use Non-Contiguous Neighbors is checked
Feature Attribute Array NeighborList List of int32_t (1) List of neighbors for each Feature
Element Attribute Array FeatureIds int32_t (1) Specifies to which Feature each Element belongs
Feature Attribute Array Phases int32_t (1) Specifies to which Ensemble each Feature belongs
Feature Attribute Array AvgQuats float (4) Specifies the average orientation of the Feature in quaternion representation
Ensemble Attribute Array CrystalStructures uint32_t (1) Enumeration representing the crystal structure for each Ensemble

Created Objects

Kind Default Name Type Component Dimensions Description
Element Attribute Array ParentIds int32_t (1) Specifies to which parent each Element belongs
Attribute Matrix NewFeatureData Feature N/A Created Feature Attribute Matrix name
Feature Attribute Array ParentIds int32_t (1) Specifies to which parent each Feature belongs
Feature Attribute Array Active bool (1) Specifies if the Feature is still in the sample (true if the Feature is in the sample and false if it is not). At the end of the Filter, all Features will be Active

Example Pipelines

  • (10) SmallIN100 Full Reconstruction
  • (06) SmallIN100 Postsegmentation Processing

Please see the description file distributed with this Plugin

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