matei jordache
d4c5cf4670
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29 lines
1.0 KiB
Markdown
29 lines
1.0 KiB
Markdown
# Unrotate
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Auto-detect and correct in-plane scan rotation. Computes a slope angle histogram, finds the dominant feature direction for the given symmetry, and rotates the image to align features with the axes.
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## Inputs
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| Name | Type | Required | Description |
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|------|------|----------|-------------|
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| field | DATA_FIELD | Yes | Input field to correct |
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## Outputs
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| Name | Type | Description |
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|------|------|-------------|
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| leveled | DATA_FIELD | Field with rotation corrected |
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## Controls
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| Name | Type | Default | Description |
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|------|------|---------|-------------|
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| symmetry | dropdown | 4-fold | Expected symmetry of the surface features: 2-fold, 3-fold, 4-fold, or 6-fold |
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## Notes
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- Best suited for crystalline or patterned surfaces where features have a clear preferred direction.
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- 4-fold symmetry is the most common choice for cubic crystal surfaces and rectangular gratings.
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- If the detected rotation is less than 0.01°, the data is returned unchanged.
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- Uses bilinear interpolation; edges are handled with nearest-neighbor extension.
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