30 lines
1.3 KiB
Markdown
30 lines
1.3 KiB
Markdown
# Grain Distance Transform
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Compute the mask distance transform using Gwyddion-style interior, exterior, or signed output. Supports Euclidean, city-block, chessboard, and octagonal distance variants, with optional image-boundary handling matching mask_edt.
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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 | Field providing physical calibration for the output |
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| mask | IMAGE | Yes | Binary mask to compute distances for |
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## Outputs
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| Name | Type | Description |
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|------|------|-------------|
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| distance | DATA_FIELD | Distance transform field in physical units |
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## Controls
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| Name | Type | Default | Description |
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|------|------|---------|-------------|
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| distance_type | dropdown | euclidean | Distance metric: euclidean, cityblock, chess (Chebyshev), octagonal48, octagonal84, or octagonal |
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| output_type | dropdown | interior | Output mode: interior (distances inside grains), exterior (distances outside), or signed (positive inside, negative outside) |
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| from_border | BOOLEAN | True | When enabled, image borders are treated as mask boundaries |
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## Notes
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- Output distances are in physical xy units derived from the field calibration.
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- The mask must have the same pixel dimensions as the field.
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