28 lines
969 B
Markdown
28 lines
969 B
Markdown
# Local Contrast
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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.
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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 |
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## Outputs
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| Name | Type | Description |
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|------|------|-------------|
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| result | DATA_FIELD | Field with enhanced local contrast |
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## Controls
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| Name | Type | Default | Description |
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|------|------|---------|-------------|
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| kernel_size | INT | 10 | Size of the local neighbourhood window in pixels (2–100) |
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| weight | FLOAT | 0.5 | Blend weight between original and full-contrast output (0 = original, 1 = full local contrast; 0–1) |
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## Limitations
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- Large kernel sizes are slow; values above ~50 pixels may be noticeably slow on large fields.
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- The enhancement is purely a display-contrast operation; it changes the underlying data values.
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