{
  "topic": "C13",
  "title": "SAM 3D 多物体重建：单图配三张蒙版，检查物体姿态与场景布局",
  "scope": "实际原生三物体图、保留遮挡的可见区域蒙版、同坐标GLB和布局真值；未在Mac运行SAM3D推理。",
  "targetTool": "SAM 3D Objects",
  "targetServiceExecution": "Not performed; actual local native operations are described separately.",
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