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{
  "sample_id": 91,
  "geometry_type": "simple_spline",
  "geometry_parameters": {
    "type": "simple_spline",
    "n_control_points": "5",
    "max_height": 0.1
  },
  "rq_target": 0.0019423135385265955,
  "rq_actual": 0.0019423135385265957,
  "ra_actual": 0.001585084976159738,
  "severity": "high_corrosion",
  "is_anisotropic": true,
  "psd_method": "exponential",
  "manufacturing_process": "random",
  "method": "hybrid",
  "grid_resolution": [
    207,
    142
  ],
  "physical_dimensions": [
    0.1954238679003001,
    0.04890050610273516
  ],
  "curvature_statistics": {
    "mean_slope": 0.0020162311647567823,
    "max_slope": 0.008614502529253387,
    "height_range": 0.20232051024343053,
    "mean_height": -0.06399708484897061,
    "std_height": 0.04579714955000692
  },
  "generation_timestamp": "2025-11-08T02:32:44.325173",
  "correlation_length_x": 0.08748656025819493,
  "correlation_length_y": 0.013671539715094968,
  "orientation": 147.756716494733,
  "anisotropy_ratio": 6.3991739102801715,
  "hybrid_parameters": {
    "w_psd": 0.1,
    "w_perlin": 0.15,
    "w_fractal": 0.75,
    "perlin_octaves": 8,
    "perlin_persistence": 0.6502512926218473,
    "perlin_lacunarity": 2.5,
    "fractal_hurst": 0.4974658442081626,
    "fractal_modes": 61
  }
}