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{
  "schema_version": "2.0",
  "repair_basis": "Frozen before the E5 v2 rerun from pre-existing project repair and reannotation prompt inventories; v1 outputs are retained.",
  "categories": {
    "stairs": {
      "prompts": [
        "stair steps",
        "outdoor staircase",
        "concrete stair steps",
        "stair treads",
        "pedestrian stairway",
        "steps at a building entrance"
      ],
      "max_area_ratio": 0.75
    },
    "ramp": {
      "prompts": [
        "wheelchair ramp",
        "wheelchair access ramp",
        "accessible ramp with handrails",
        "accessible sloped walking surface",
        "sloped sidewalk ramp",
        "pedestrian access ramp"
      ]
    },
    "tactile_paving": {
      "prompts": [
        "tactile walking surface indicator strip",
        "raised bar tactile paving path",
        "ribbed guidance tiles on pedestrian route",
        "tactile guidance paving strip",
        "tactile warning strip on sidewalk",
        "truncated dome warning surface"
      ],
      "max_area_ratio": 0.65
    },
    "curb_cut": {
      "prompts": [
        "curb ramp",
        "dropped curb",
        "sidewalk curb cut",
        "pedestrian curb ramp"
      ]
    },
    "walkway": {
      "prompts": [
        "pedestrian sidewalk",
        "walkable pedestrian path",
        "accessible walkway",
        "pavement area where pedestrians can walk"
      ],
      "max_area_ratio": 0.92
    }
  },
  "category_confusions": {
    "stairs": ["ramp"],
    "ramp": ["stairs", "walkway"],
    "tactile_paving": ["walkway"],
    "curb_cut": ["ramp", "walkway"],
    "walkway": ["stairs", "ramp"]
  },
  "obstacle_prompts": [
    "person",
    "wheelchair",
    "baby stroller",
    "dog",
    "car",
    "van",
    "truck",
    "bicycle",
    "motorcycle",
    "scooter",
    "suitcase",
    "trash bin",
    "chair",
    "table",
    "bench",
    "tree trunk",
    "street sign",
    "utility cabinet",
    "traffic cone",
    "bollard",
    "pole",
    "planter",
    "box or package",
    "construction material"
  ],
  "category_obstacle_prompts": {
    "stairs": [
      "object blocking the stairs",
      "post blocking the stairs",
      "railing post occluding the staircase"
    ],
    "ramp": [
      "object blocking the ramp",
      "post blocking the ramp"
    ],
    "curb_cut": [
      "object blocking the curb ramp",
      "street pole"
    ],
    "tactile_paving": [
      "object on the tactile paving",
      "street furniture"
    ],
    "walkway": [
      "object blocking the walkway",
      "street pole"
    ]
  },
  "obstacle_maximum_area_ratio": {
    "default": 0.20,
    "person": 0.45,
    "car": 0.55,
    "van": 0.55,
    "truck": 0.60
  },
  "barrier_obstacle_prompts": [
    "temporary pedestrian barrier",
    "construction safety barrier",
    "road work barrier"
  ],
  "barrier_obstacle_backends": [
    "sam3"
  ],
  "quality_thresholds": {
    "minimum_target_area_ratio": 0.005,
    "maximum_target_area_ratio": 0.92,
    "minimum_prompt_agreement": 0.45,
    "minimum_model_confidence": 0.45,
    "auto_accept_score": 0.72,
    "manual_review_score": 0.45
  }
}