DREAM.3D v6 User Manual
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Unsupported (Anisotropy)
This Filter attempts to align 'sections' of the sample perpendicular to the Z-direction by determining the position that results in the most overlap of previously defined "regions". The "regions" are defined by a boolean array where the Cells have been flagged by another Filter. Typically, during reading/processing of the data, each Cell is subject to a "quality metric" (or threshold) that defines if the Cell is good. This threshold can be used to define areas of each slice that are bad, either due to actual Features in the microstructure or external references inserted by the user/experimentalist. If these "regions" of bad Cells are believed to be consistent through sections, then this Filter will preserve that by aligning those "regions" on top of one another on consecutive sections.
This initial alignment is followed by a correction algorithm which adapts the shifts to a complementary criterion having one of the following forms:
The initial alignment algorithm of this Filter is as follows:
Note that this is similar to a downhill simplex and can get caught in a local minimum!
The correction alignment algorithm of this Filter attempts to improve the complementary fit as follows:
The user can choose to write the determined shift to an output file by enabling Write Alignment Shifts File and providing a file path.
Name | Type | Description |
---|---|---|
Write Alignment Shift File | bool | Whether to write the shifts applied to each section to a file |
Alignment File | File Path | The output file path where the user would like the shifts applied to the section to be written. Only needed if Write Alignment Shifts File is checked |
Global Correction: SEM Images | bool | Whether to use SEM images for adaptive alignment. |
Global Correction: Own Shifts | bool | Whether to set the shifts for adaptive alignment manually. |
Total Shift In X-Direction (Microns) | float | Shift in X-direction between the first and the last slice of the stack in microns. Only needed if Global Correction: Own Shifts is checked. |
Total Shift In Y-Direction (Microns) | float | Shift in Y-direction between the first and the last slice of the stack in microns. Only needed if Global Correction: Own Shifts is checked. |
Image
Kind | Default Name | Type | Component Dimensions | Description |
---|---|---|---|---|
Image Data Array | ImageData | uint8_t | any component size | Specifies image data containing the SEM images to be used for global correction of the shifts. |
Cell Attribute Array | Mask | bool | (1) | Specifies if the Cell is to be counted as part of the sample or not. |
None
Please see the description file distributed with this Plugin
If you need more help with a Filter, please consider asking your question on the DREAM.3D Users Google group!