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{
  "sample_id": 661,
  "geometry_type": "flat",
  "geometry_parameters": {
    "type": "flat"
  },
  "rq_target": 0.0015894198151387947,
  "rq_actual": 0.0015894198151387947,
  "ra_actual": 0.0013057662690191235,
  "severity": "high_corrosion",
  "is_anisotropic": true,
  "psd_method": "exponential",
  "manufacturing_process": "random",
  "method": "hybrid",
  "grid_resolution": [
    297,
    113
  ],
  "physical_dimensions": [
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    0.03821091923029943
  ],
  "curvature_statistics": {
    "mean_slope": 0.0,
    "max_slope": 0.0,
    "height_range": 0.0,
    "mean_height": 0.0,
    "std_height": 0.0
  },
  "generation_timestamp": "2025-11-08T03:43:52.286349",
  "correlation_length_x": 0.0630494926245416,
  "correlation_length_y": 0.0035048629100555635,
  "orientation": 87.25251331241238,
  "anisotropy_ratio": 17.989146577930505,
  "hybrid_parameters": {
    "w_psd": 0.1,
    "w_perlin": 0.15,
    "w_fractal": 0.75,
    "perlin_octaves": 7,
    "perlin_persistence": 0.7948764441156714,
    "perlin_lacunarity": 2.5,
    "fractal_hurst": 0.3831101022426995,
    "fractal_modes": 91
  }
}