[
  {
    "id": "ipn_hands",
    "name": "IPN HandS",
    "scale": "200 视频 · 801,476 帧 · 约 7 小时 25 分钟 · 21 点/手",
    "ego": "非 ego",
    "origin": "MediaPipe 预标 → 专家人工修正 x、y；支持插值辅助。",
    "tags": [
      "2D local pose pretrain",
      "连续动作 / 时序"
    ],
    "status": "全 200 视频核查；196 段时间轴一致，每段均匀抽 3 帧",
    "refs": [
      [
        "官方发布",
        "https://github.com/GibranBenitez/IPN-hand/blob/master/README_HandS.md"
      ],
      [
        "标注流程",
        "https://www.mdpi.com/2076-3417/15/11/6321"
      ]
    ],
    "notes": "展示 landmarks_gt 的手部 x、y；z 和辅助身体点未经人工验证，不绘制。单专家修正，无全库多人独立复核证据。 本次对全部 200 段视频分三等长时间区间，每区间选择距中心最近且至少有 3 个图内标签点的帧；不按动作类别、画面美观或拟合效果筛选。解码时间轴不一致的视频单独列出，不猜测偏移。",
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