{
  "calibration_status": "completed",
  "camera_model": "Synthetic Test Camera",
  "pattern": {
    "width": 9,
    "height": 6,
    "square_size": 25.0
  },
  "reprojection_error": 0.22815125276117232,
  "image_width": 640,
  "image_height": 480,
  "camera_matrix": [
    [
      347605.45724283694,
      0.0,
      319.7305652632741
    ],
    [
      0.0,
      347605.45724283694,
      239.28421856431248
    ],
    [
      0.0,
      0.0,
      1.0
    ]
  ],
  "distortion_coefficients": [
    -0.00012935642723745932,
    0.0005464968772907774,
    -0.5226696326398965,
    0.11865778037533631,
    -0.00013870509407587638
  ],
  "observability": {
    "overall_score": 78.48886485629612,
    "spatial_coverage": 0.5555555555555556,
    "orientation_variance_deg": 4.853697755543555,
    "distance_variance": 0.078996442258358,
    "num_valid_views": 12,
    "warnings": [],
    "recommendations": [
      "Better spatial coverage (more detections near edges) would improve distortion estimation"
    ]
  },
  "visualization": {
    "detected_corners": [
      {
        "url": "/static/uploads/calibration/1/detected_corners_1.png"
      },
      {
        "url": "/static/uploads/calibration/1/detected_corners_2.png"
      },
      {
        "url": "/static/uploads/calibration/1/detected_corners_3.png"
      },
      {
        "url": "/static/uploads/calibration/1/detected_corners_4.png"
      }
    ],
    "overview": "/static/uploads/calibration/1/overview.png",
    "spatial_coverage": "/static/uploads/calibration/1/spatial_coverage.png"
  },
  "input_video": "/static/uploads/calibration/synthetic_calibration.mp4"
}