matei jordache
d4c5cf4670
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1.0 KiB
1.0 KiB
Arc Revolve
Subtract a cylindrical arc background. A circular arc of the given radius is rolled under each row (or column), and the envelope it traces is subtracted as the background.
Inputs
| Name | Type | Required | Description |
|---|---|---|---|
| field | DATA_FIELD | Yes | Input field |
Outputs
| Name | Type | Description |
|---|---|---|
| leveled | DATA_FIELD | Field with arc background subtracted |
| background | DATA_FIELD | The estimated arc background |
Controls
| Name | Type | Default | Description |
|---|---|---|---|
| radius | INT | 20 | Arc radius in pixels (1–1000) |
| direction | dropdown | horizontal | Direction to apply the arc: horizontal, vertical, or both |
Notes
- Larger radii produce smoother backgrounds that follow gentle curvature. Smaller radii track finer features.
- The "both" direction takes the minimum of horizontal and vertical backgrounds.
- Deep outliers are suppressed before fitting so that scratches or pits do not pull the arc down.