{
  "replace_osm_ids": [
    "466202929",
    "466202944",
    "466202947",
    "466202949",
    "466202952",
    "481477932",
    "481477936"
  ],
  "landmarks": [
    {
      "id": "landmark:concert-hall",
      "name": "长沙音乐厅",
      "osm_id": "466202944",
      "height_m": 32,
      "height_evidence": "参考照片估计坡顶最高处；非实测",
      "details": [
        "真实不规则轮廓",
        "北高南低屋顶",
        "30道屋顶梯田",
        "玻璃基座",
        "天窗及女儿墙"
      ]
    },
    {
      "id": "landmark:museum",
      "name": "长沙博物馆及规划展览馆",
      "osm_id": "466202947",
      "height_m": 20,
      "height_evidence": "OSM height=20；折面屋顶局部高差为参考推定",
      "details": [
        "真实不规则轮廓",
        "折面石材外壳",
        "三角天窗及分格",
        "架空玻璃基座"
      ]
    },
    {
      "id": "landmark:library",
      "name": "长沙图书馆",
      "osm_id": "466202952",
      "height_m": 20,
      "height_evidence": "OSM height=20；开敞庭院与屋顶折面据总平面近似",
      "details": [
        "真实轮廓",
        "开敞内院",
        "环院折面屋顶",
        "玻璃首层"
      ]
    },
    {
      "id": "landmark:landscape-tower",
      "name": "滨江文化园景观塔",
      "osm_id": "466202949",
      "height_m": 116,
      "height_evidence": "设计项目介绍116m；OSM标50m与该来源冲突，保留冲突记录",
      "details": [
        "低矮不规则展亭",
        "独立细三角塔身",
        "收分尖顶",
        "斜向立面分材"
      ]
    },
    {
      "id": "landmark:intercontinental",
      "name": "长沙北辰洲际酒店",
      "osm_ids": [
        "481477932",
        "481477936"
      ],
      "height_m": 125,
      "height_evidence": "大悦城参奖总平面标注酒店H=125m/G+26F；未获得竣工测量",
      "details": [
        "OSM弧形裙房及塔楼分开建模",
        "26层横向线条",
        "弧面窗框",
        "退台冠部"
      ]
    },
    {
      "id": "landmark:joy-city-office",
      "name": "大悦城旁圆角办公塔楼",
      "osm_id": "466202929",
      "height_m": 120,
      "height_evidence": "暂沿用OSM height=120/levels=40；参奖总平面A1-2标235m，轮廓归属及现状高度存在冲突，待核验",
      "details": [
        "真实圆角轮廓",
        "独立玻璃立面",
        "40层横向分格",
        "退台机房"
      ]
    },
    {
      "id": "landmark:joy-city-mall",
      "name": "北辰三角洲大悦城裙房",
      "height_m": 24,
      "height_evidence": "依据参奖总平面及照片的简化估计；并非完整竣工轮廓",
      "footprint_evidence": "以酒店/办公塔楼OSM为锚点手工近似裙房边界",
      "details": [
        "连续多折线裙房",
        "三层玻璃带",
        "环形屋顶活动空间",
        "层叠绿化"
      ]
    },
    {
      "id": "landmark:civic-plaza",
      "name": "三馆一厅中央广场细节",
      "height_m": 1.8,
      "height_evidence": "示意性铺装、台阶与坐凳；位置和尺寸为参考近似",
      "details": [
        "中央步行铺装",
        "台阶",
        "坐凳"
      ]
    }
  ],
  "triangles": 9226,
  "units": "height_m is metres; emitted vertices use project()/scale",
  "reference_sources": [
    "https://www.archcollege.com/42538.html",
    "https://www.credaward.com/project/245440/"
  ],
  "limitations": "外轮廓优先使用OSM；地标屋顶、立面、商场裙房与小设施是资料辅助的简化重建，非测绘级模型。",
  "supplements": [
    {
      "id": "1557985245",
      "name": "文化园东北侧白色折面屋顶建筑",
      "footprint_source": "OSM",
      "height_m": 29,
      "height_source": "roof profile visually inferred from supplied image; not measured",
      "details": "56 pyramidal roof bays and glazing bands"
    },
    {
      "id": "manual:west-bank-basins",
      "name": "西岸原图可见低矮构筑物",
      "footprint_source": "manually traced from original satellite reference",
      "height_source": "3–7 m schematic estimate",
      "details": "30 process basins and 3 low structures"
    },
    {
      "id": "manual:civic-paving",
      "name": "三馆一厅广场铺装及花坛",
      "footprint_source": "manually interpreted image layout",
      "height_source": "schematic < 1 m"
    }
  ]
}