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{
  "sample_id": 540,
  "geometry_type": "sphere",
  "geometry_parameters": {
    "type": "sphere",
    "radius": 0.9885845052317046,
    "segment_angle": 37.91908224505124
  },
  "rq_target": 0.0011328060473954514,
  "rq_actual": 0.0011328060473954514,
  "ra_actual": 0.0009174220476254151,
  "severity": "high_corrosion",
  "is_anisotropic": false,
  "psd_method": "exponential",
  "manufacturing_process": "structural_degradation",
  "method": "hybrid",
  "grid_resolution": [
    220,
    156
  ],
  "physical_dimensions": [
    0.18466028707410803,
    0.038159427975944196
  ],
  "curvature_statistics": {
    "mean_slope": 0.0009528588618327902,
    "max_slope": 0.0018323853572882742,
    "height_range": 0.2087104999034757,
    "mean_height": 0.07075612537084205,
    "std_height": 0.06285059644310147
  },
  "generation_timestamp": "2025-11-08T03:28:37.047874",
  "correlation_length": 0.05469714113082721,
  "hybrid_parameters": {
    "w_psd": 0.1,
    "w_perlin": 0.15,
    "w_fractal": 0.75,
    "perlin_octaves": 6,
    "perlin_persistence": 0.707496243334856,
    "perlin_lacunarity": 2.5,
    "fractal_hurst": 0.3760635830819362,
    "fractal_modes": 63
  }
}