immortaly007andClaude Opus 5.5
55a25ba978
Fit the background brightness from the photo border and subtract it, so side-lit photos threshold cleanly. The clicked pixel (or, without a click, the border) decides whether the piece is darker or lighter, replacing the invert checkbox. Adds the MDF-on-wood-floor photo as a regression fixture. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
28 lines
977 B
Markdown
28 lines
977 B
Markdown
# Real photo fixtures
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Regression photos for `detect()`. Each entry in `manifest.json` is checked by `tests/fixtures.test.ts`.
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To add one:
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1. Take a top-down photo of a scrap piece with something of known length visible.
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2. Rotate it upright and resize it so the long side is at most 2000 px. Save as JPEG.
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EXIF orientation is ignored by the test decoder.
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3. Measure the real piece's bounding box in mm.
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4. Open the photo in the app, set the scale, and note px/mm, the threshold you used, and,
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if needed, a seed point (shown in image px).
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5. Add an entry:
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```json
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{
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"file": "plywood-1.jpg",
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"threshold": null,
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"seed": null,
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"pxPerMm": 3.21,
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"expected": { "widthMm": 412, "heightMm": 287, "holes": 2 },
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"toleranceMm": 8
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}
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```
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`threshold: null` means Otsu's automatic value. `holes` is optional; leave it out when
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background texture creates noise holes. Without a known scale, use `pxPerMm: 1` and sizes in px. `seed` is `{ "x": ..., "y": ... }` or `null`.
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