Local Contrast
Expand the local dynamic range at each pixel to reveal fine surface features that are hidden by global contrast range. Equivalent to Gwyddion local_contrast.c.
Inputs
| Name |
Type |
Required |
Description |
| field |
DATA_FIELD |
Yes |
Input field |
Outputs
| Name |
Type |
Description |
| result |
DATA_FIELD |
Field with enhanced local contrast |
Controls
| Name |
Type |
Default |
Description |
| kernel_size |
INT |
10 |
Size of the local neighbourhood window in pixels (2–100) |
| weight |
FLOAT |
0.5 |
Blend weight between original and full-contrast output (0 = original, 1 = full local contrast; 0–1) |
Limitations
- Large kernel sizes are slow; values above ~50 pixels may be noticeably slow on large fields.
- The enhancement is purely a display-contrast operation; it changes the underlying data values.
