{
  "description": "Computed bitmap examples from EngravePrep's bundled sample portrait. These are not physical engraving results.",
  "preprocessing": "CoreGraphics DeviceGray conversion; high-quality resampling to 600 × 750 pixels; full source frame; no additional tone adjustment, sharpening, material preset, or inversion. This fixture isolates DitherEngine, not the complete app image-processing pipeline.",
  "nominalDpi": 300,
  "nominalWidthInches": 2,
  "nominalHeightInches": 2.5,
  "detailCrop": {
    "x": 190,
    "y": 200,
    "width": 200,
    "height": 200,
    "origin": "top-left of decoded full PNG"
  },
  "inputs": [
    {
      "path": "EngravePrep/Resources/Assets.xcassets/SamplePortrait.imageset/sample-portrait.png",
      "sha256": "ad2d1f568d169f34147a391ce35854e55f0cd2c3c1c12a3537015587c60f3f9f"
    },
    {
      "path": "EngravePrep/Processing/DitherEngine.swift",
      "sha256": "e3fb49ca0903c6b133ebb0ee69f05f76c96bbb64e79dda1f11b1de84e2649a7b"
    },
    {
      "path": "EngravePrep/Models/EngraveSettings.swift",
      "sha256": "697a991c70c9957244e8669b3f9b185aaaf477c85e65bd9d5862750f4d42cb6b"
    },
    {
      "path": "website/scripts/dither-examples.swift",
      "sha256": "ce6f34992720728bf6a22e9710d6e9874490e6f6ac83493abfb4596942a31d44"
    }
  ],
  "outputs": [
    {
      "file": "source.png",
      "sha256": "5d9cf30e2d573cbc68a48666b1565198bb84e63e79dab778699b49742814bdf1",
      "width": 600,
      "height": 750,
      "bitDepth": 8
    },
    {
      "file": "source-detail.png",
      "sha256": "d040448d362acfd2f2afca17c2edd1644f03ea886d189357bc01374d7a38fc7c",
      "width": 200,
      "height": 200,
      "bitDepth": 8
    },
    {
      "file": "floyd-steinberg.png",
      "sha256": "c5fca1df8486efa38db955e60e53d0f3bccc12ef48fef032ab6435b310ffa10b",
      "width": 600,
      "height": 750,
      "bitDepth": 1
    },
    {
      "file": "floyd-steinberg-detail.png",
      "sha256": "fbb2512cd8e1fce0dcf9246a5994143d6fe2aa3904dc052cee3ed3d5425f429d",
      "width": 200,
      "height": 200,
      "bitDepth": 1
    },
    {
      "file": "jarvis.png",
      "sha256": "7549d6817d33591b58b271b24b2c32ed4a0561cdd67d2b925c1e914f670207d6",
      "width": 600,
      "height": 750,
      "bitDepth": 1
    },
    {
      "file": "jarvis-detail.png",
      "sha256": "47a453eec4748031853c49cb31483749bba08752375b7d2e9c4867c6223904ec",
      "width": 200,
      "height": 200,
      "bitDepth": 1
    },
    {
      "file": "stucki.png",
      "sha256": "8739be024658ad0b06fecd2c382fe623d1e16ef184094bb50b6a35c38a7b12ce",
      "width": 600,
      "height": 750,
      "bitDepth": 1
    },
    {
      "file": "stucki-detail.png",
      "sha256": "da28b1249679c0c3e6e069fa1bfd9614b352991c634e3720901268244c65f67e",
      "width": 200,
      "height": 200,
      "bitDepth": 1
    }
  ]
}