34 lines
1.5 KiB
Markdown
34 lines
1.5 KiB
Markdown
# Process Scanned Photo
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`PortraitScannedPhotoPreview` is a narrow utility for scanned physical photographs. A
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scanner's white bed/background is distinct from a print's own border, such as a
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Polaroid frame. This node can straighten a scan and select which boundary to crop.
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It is retained separately from Intelligent AutoCrop and Smart Photo Prepare.
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## Inputs
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- `image`: Scanned photograph.
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- `straighten`: Estimate print rotation and rotate the scan before cropping.
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- `crop_mode`:
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- **Scanner Bed Only**: Target the outer print boundary, retaining the print's
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own border where the detector can distinguish it from the white bed.
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- **Inner Photo Frame**: Target the image region inside the print's border,
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removing the scanner bed and the print border.
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- **None**: Skip cropping; straightening can still be enabled.
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- `padding`: Pixels to retain around the detected crop. Negative values crop
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further inward.
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- `threshold`: Brightness threshold used in scan-boundary detection.
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## Output
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One processed `image`. No subject mask, protection mask, or editor-resolution
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selection is involved.
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Detection uses brightness, edges, and contours rather than a semantic print
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model. A white print border that is indistinguishable from a white scanner bed
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can be ambiguous; inspect the result and adjust threshold/padding.
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The production node uses the 2.0 scan engine, preserving floating-point pixels
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and the scanner-bed/inner-frame distinction. The old `ProcessScannedPhoto`
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ID has been removed.
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