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{
  "sample_id": 239,
  "geometry_type": "nurbs",
  "geometry_parameters": {
    "type": "nurbs",
    "n_control_x": "5",
    "n_control_y": "5",
    "max_height": 0.15,
    "smoothness": 0.39409063986272574
  },
  "rq_target": 0.0026677971861884743,
  "rq_actual": 0.0026677971861884743,
  "ra_actual": 0.002206201864622326,
  "severity": "high_corrosion",
  "is_anisotropic": false,
  "psd_method": "exponential",
  "manufacturing_process": "structural_degradation",
  "method": "hybrid",
  "grid_resolution": [
    252,
    188
  ],
  "physical_dimensions": [
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  ],
  "curvature_statistics": {
    "mean_slope": 0.0011862820741935821,
    "max_slope": 0.002838959228588734,
    "height_range": 0.16057085981934333,
    "mean_height": -0.028136553647553634,
    "std_height": 0.036291534872705276
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  "generation_timestamp": "2025-11-08T02:51:09.358491",
  "correlation_length": 0.04862176549598331,
  "hybrid_parameters": {
    "w_psd": 0.1,
    "w_perlin": 0.15,
    "w_fractal": 0.75,
    "perlin_octaves": 7,
    "perlin_persistence": 0.6715266102595768,
    "perlin_lacunarity": 2.5,
    "fractal_hurst": 0.383153887894158,
    "fractal_modes": 80
  }
}