Find Feature Average Orientations¶
Group (Subgroup)¶
Statistics (Crystallographic)
Description¶
This Filter determines the average orientation of each Feature by the following algorithm:
- Gather all Elements that belong to the Feature
- Using the symmetry operators of the phase of the Feature, rotate the quaternion of the Feature's first Element into the Fundamental Zone nearest to the origin
- Rotate each subsequent Elements's quaternion (with same symmetry operators) looking for the quaternion closest to the quaternion selected in Step 2
- Average the rotated quaternions for all Elements and store as the average for the Feature
Note: The process of finding the nearest quaternion in Step 3 is to account for the periodicity of orientation space, which would cause problems in the averaging if all quaternions were forced to be rotated into the same Fundamental Zone
Note: The quaternions can be averaged with a simple average because the quaternion space is not distorted like Euler space.
Parameters¶
None
Required Geometry¶
Not Applicable
Required Objects¶
| Kind | Default Name | Type | Component Dimensions | Description |
|---|---|---|---|---|
| Element Attribute Array | FeatureIds | int32_t | (1) | Specifies to which Feature each Element belongs |
| Element Attribute Array | Phases | int32_t | (1) | Specifies the Ensemble of the Element |
| Element Attribute Array | Quats | float | (4) | Specifies the orientation of the Element 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 |
|---|---|---|---|---|
| Feature Attribute Array | AvgQuats | float | (4) | Specifies the average orientation of the Feature in quaternion representation |
| Feature Attribute Array | AvgEulerAngles | float | (3) | Specifies the orientation of each Feature in Bunge convention (Z-X-Z) |
Example Pipelines¶
- (10) SmallIN100 Full Reconstruction
- InsertTransformationPhase
- (06) SmallIN100 Postsegmentation Processing
- (05) SmallIN100 Crystallographic Statistics
- (06) SmallIN100 Synthetic
License & Copyright¶
Please see the description file distributed with this Plugin
DREAM.3D Mailing Lists¶
If you need more help with a Filter, please consider asking your question on the DREAM.3D Users Google group!