Fractal Interpolation
Fill masked regions using fractal interpolation. Matches the spectral characteristics of the surrounding surface to produce natural-looking infill that preserves texture. Better than Laplace for rough surfaces. Equivalent to Gwyddion's fraccor.c module.
Inputs
| Name |
Type |
Required |
Description |
| field |
DATA_FIELD |
Yes |
Input field with regions to fill |
| mask |
IMAGE |
Yes |
Binary mask where white (255) marks pixels to interpolate |
Outputs
| Name |
Type |
Description |
| filled |
DATA_FIELD |
Field with masked regions filled by fractal interpolation |
Controls
| Name |
Type |
Default |
Description |
| iterations |
INT |
200 |
Number of boundary relaxation iterations (10–5000) |
Notes
- Fractal interpolation synthesizes fill data whose power spectrum matches the surrounding surface. This produces a more realistic appearance than Laplace interpolation for textured or rough surfaces.
- The fill region boundaries are smoothed via relaxation to ensure continuity.
- For very smooth surfaces, Laplace Interpolation may produce cleaner results.
- The seed for random synthesis is fixed for reproducibility.
