{
  "sample_id": 689,
  "geometry_type": "flat",
  "geometry_parameters": {
    "type": "flat"
  },
  "rq_target": 0.0007575168979246294,
  "rq_actual": 0.0007575168979246294,
  "ra_actual": 0.0006088191380142693,
  "severity": "high_corrosion",
  "is_anisotropic": true,
  "psd_method": "exponential",
  "manufacturing_process": "random",
  "method": "hybrid",
  "grid_resolution": [
    266,
    118
  ],
  "physical_dimensions": [
    0.15057257563891566,
    0.0698825134517786
  ],
  "curvature_statistics": {
    "mean_slope": 0.0,
    "max_slope": 0.0,
    "height_range": 0.0,
    "mean_height": 0.0,
    "std_height": 0.0
  },
  "generation_timestamp": "2025-11-08T03:46:48.516431",
  "correlation_length_x": 0.2553887689768318,
  "correlation_length_y": 0.01563105266004819,
  "orientation": 140.87228339617508,
  "anisotropy_ratio": 16.338552145600953,
  "hybrid_parameters": {
    "w_psd": 0.1,
    "w_perlin": 0.15,
    "w_fractal": 0.75,
    "perlin_octaves": 6,
    "perlin_persistence": 0.8492218667918329,
    "perlin_lacunarity": 2.5,
    "fractal_hurst": 0.3698310483478934,
    "fractal_modes": 95
  }
}