{
  "sample_id": 252,
  "geometry_type": "simple_spline",
  "geometry_parameters": {
    "type": "simple_spline",
    "n_control_points": "5",
    "max_height": 0.1
  },
  "rq_target": 0.0028720725508793545,
  "rq_actual": 0.002872072550879355,
  "ra_actual": 0.0022800831573206062,
  "severity": "high_corrosion",
  "is_anisotropic": false,
  "psd_method": "exponential",
  "manufacturing_process": "structural_degradation",
  "method": "hybrid",
  "grid_resolution": [
    308,
    181
  ],
  "physical_dimensions": [
    0.16364668944794003,
    0.036536610952060136
  ],
  "curvature_statistics": {
    "mean_slope": 0.0013396325563006406,
    "max_slope": 0.006505300250323462,
    "height_range": 0.19907159664432683,
    "mean_height": 0.057851769775331116,
    "std_height": 0.03835160979268686
  },
  "generation_timestamp": "2025-11-08T02:54:22.358061",
  "correlation_length": 0.031087934370412584,
  "hybrid_parameters": {
    "w_psd": 0.1,
    "w_perlin": 0.15,
    "w_fractal": 0.75,
    "perlin_octaves": 6,
    "perlin_persistence": 0.7441777986611445,
    "perlin_lacunarity": 2.5,
    "fractal_hurst": 0.45963232201471677,
    "fractal_modes": 89
  }
}