{
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    "width": 1280,
    "height": 960,
    "megapixels": 1.23
  },
  "staged": {
    "width": 2390,
    "height": 1792,
    "megapixels": 4.28
  },
  "aspect_ratio": {
    "original": 1.3333,
    "staged": 1.3337,
    "deviation": 0.0003,
    "pass": true
  },
  "resolution_kept": true,
  "resolution_ratio": 3.485,
  "raw_drift_score": 23.5,
  "alignment": {
    "ok": true,
    "method": "SIFT + ratio test + RANSAC similarity (estimateAffinePartial2D)",
    "keypoints_original": 366,
    "keypoints_staged": 659,
    "matches": 92,
    "affine_anisotropy": 0.0008,
    "inliers": 73,
    "inlier_ratio": 0.793,
    "median_residual_px": 0.3,
    "matrix_staged_to_original_work": [
      [
        0.9995,
        -0.00067,
        0.28094
      ],
      [
        0.00067,
        0.9995,
        -0.29082
      ]
    ]
  },
  "framing": {
    "pass": true,
    "result": "pass",
    "zoom": 1.0005,
    "shift_px": [
      -0.3,
      -0.2
    ],
    "shift_pct": [
      -0.02,
      -0.02
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    "rotation_deg": 0.039,
    "visible_overlap_pct": 100.0,
    "invented_area_pct": 0.0,
    "original_px_lost": {
      "left": 0.4,
      "right": 0.9,
      "top": 0.5,
      "bottom": 0.8
    },
    "criteria": "overlap >= 97%, zoom 0.99-1.02, |rotation| <= 0.5 deg, invented area <= 2%",
    "units": "px of the original image; shift = staged frame centre vs original centre; zoom > 1 = cropped/zoomed in"
  },
  "diagnostics": {
    "sensitive_edges": {
      "line_recall": 0.8433,
      "line_displaced_frac": 0.0809,
      "line_missing_frac": 0.0758,
      "structural_line_pixels": 24790
    },
    "note": "low-threshold Canny that also sees white wall/soffit/column edges; not part of drift_score"
  },
  "architecture": {
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    "line_recall": 0.7099,
    "line_displaced_frac": 0.1697,
    "line_missing_frac": 0.1204,
    "structural_line_pixels": 9146,
    "evaluated_area_frac": 0.649,
    "drift_score": 22.5,
    "aligned": true,
    "evaluated_area_frac_of_mask": 0.999,
    "mask": "auto: top 65% of frame"
  },
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  "structure": {
    "edge_ssim": 0.8398,
    "line_recall": 0.6897,
    "line_displaced_frac": 0.1826,
    "line_missing_frac": 0.1277,
    "structural_line_pixels": 9146,
    "evaluated_area_frac": 0.65,
    "drift_score": 23.5,
    "mask": "auto: top 65% of frame",
    "note": "legacy unaligned structure check (= raw_drift_score)"
  },
  "seconds_to_result": null,
  "seconds_approx": true,
  "files": {
    "original": "photos/03-room-passage-desk.jpg",
    "staged": "results/stylesmarter/03.jpg"
  }
}