Drift Correction
Compensate for thermal or piezo drift between scan lines. Estimates inter-row displacement via cross-correlation and shifts rows to align them. Equivalent to Gwyddion's drift.c module.
Inputs
| Name |
Type |
Required |
Description |
| field |
DATA_FIELD |
Yes |
Input field with drift artifacts |
Outputs
| Name |
Type |
Description |
| corrected |
DATA_FIELD |
Drift-corrected field |
Controls
| Name |
Type |
Default |
Description |
| reference |
dropdown |
previous_row |
Reference for drift estimation: previous_row (local) or mean_row (global average) |
| direction |
dropdown |
horizontal |
Drift direction to correct: horizontal or vertical |
Notes
- Use previous_row for slow, cumulative drift. Use mean_row when drift is more random row-to-row.
- Apply after Line Correction for best results.
- Vertical direction transposes the correction axis — useful for column-scanned data.
