{
    "image_id": "sample_004",
    "buildings": [
        {
            "id": "bld_001",
            "bbox": [
                336,
                330,
                33,
                30
            ],
            "confidence": 0.9,
            "area": 990.0,
            "type": "industrial",
            "height_estimate": 24.1
        },
        {
            "id": "bld_002",
            "bbox": [
                211,
                265,
                51,
                31
            ],
            "confidence": 0.95,
            "area": 1581.0,
            "type": "industrial",
            "height_estimate": 23.5
        },
        {
            "id": "bld_003",
            "bbox": [
                487,
                384,
                44,
                30
            ],
            "confidence": 0.93,
            "area": 1320.0,
            "type": "residential",
            "height_estimate": 25.6
        },
        {
            "id": "bld_004",
            "bbox": [
                161,
                176,
                35,
                54
            ],
            "confidence": 0.92,
            "area": 1890.0,
            "type": "residential",
            "height_estimate": 28.7
        },
        {
            "id": "bld_005",
            "bbox": [
                314,
                196,
                32,
                32
            ],
            "confidence": 0.94,
            "area": 1024.0,
            "type": "residential",
            "height_estimate": 12.3
        }
    ],
    "detection_date": "2025-12-28",
    "model_version": "v1.0",
    "total_buildings": 5
}