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{
  "sample_id": 176,
  "geometry_type": "simple_spline",
  "geometry_parameters": {
    "type": "simple_spline",
    "n_control_points": "5",
    "max_height": 0.1
  },
  "rq_target": 0.003923151544249843,
  "rq_actual": 0.003923151544249843,
  "ra_actual": 0.003195028650218483,
  "severity": "high_corrosion",
  "is_anisotropic": true,
  "psd_method": "exponential",
  "manufacturing_process": "combined_mechanisms",
  "method": "hybrid",
  "grid_resolution": [
    258,
    100
  ],
  "physical_dimensions": [
    0.1943319440963273,
    0.0495962107786155
  ],
  "curvature_statistics": {
    "mean_slope": 0.00199041333330313,
    "max_slope": 0.006277110277374945,
    "height_range": 0.20078355995224806,
    "mean_height": -0.030116562445984207,
    "std_height": 0.06333670742559673
  },
  "generation_timestamp": "2025-11-08T02:45:30.678376",
  "correlation_length_x": 0.009266681628371503,
  "correlation_length_y": 0.018961964749825533,
  "orientation": 30.0,
  "anisotropy_ratio": 0.4886983891506688,
  "hybrid_parameters": {
    "w_psd": 0.1,
    "w_perlin": 0.15,
    "w_fractal": 0.75,
    "perlin_octaves": 8,
    "perlin_persistence": 0.6687107531621214,
    "perlin_lacunarity": 2.5,
    "fractal_hurst": 0.3701125036271876,
    "fractal_modes": 87
  }
}