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| license: other | |
| task_categories: | |
| - robotics | |
| tags: | |
| - robotics | |
| - dexterous-manipulation | |
| - teleoperation | |
| - motion-capture | |
| - human-hand | |
| - imitation-learning | |
| - hdf5 | |
| size_categories: | |
| - 10GB | |
| # CAP —— 杯序整理任务(右手)灵巧操作数据集 | |
| CAP(Capture Dataset)是一套**人类手部动作采集 + 灵巧操作演示**数据集,记录了操作者用右手完成「**按序摆放杯子(cups_order)**」任务的全过程。数据以 DexCap 风格的采集管线记录,包含**压缩后的轨迹 HDF5** 与**多视角相机的原始图像帧**,可直接用于动作复现、模仿学习与手部姿态分析。 | |
| - 仓库:`dex-robot/cap` | |
| - 主文件:`cap.zip`(10,697,737,890 字节 ≈ 9.96 GiB) | |
| - 收录内容:18,939 个文件 + 24 个目录条目 | |
| - SHA256:`f91c11ee1761822fa875d4783c1fd9388f6fa3f0fa3feeef6cd5c20775220c10` | |
| - 采集日期:2026-07-07 | |
| - 任务:cups_order(按序摆放杯子) | |
| - 手别:右手(right hand) | |
| --- | |
| ## 1. 数据总览 | |
| | 项目 | 内容 | | |
| | --- | --- | | |
| | 任务 | cups_order(按序摆放杯子) | | |
| | 采集手别 | 右手 | | |
| | 采集日期 | 2026-07-07 | | |
| | 有效采集次数 | 5 次(16:46:34 / 16:54:35 / 16:56:54 / 16:59:04 / 17:01:24) | | |
| | 轨迹文件 | 5 个 `.hdf5`(每次采集一个) | | |
| | 相机视角 | 6 路(左手 / 右手 / 头部双目 / 头部全局 RGB / 头部全局深度) | | |
| | 图像帧 | 18,914 张 `.png` + 5 段 `.mp4` | | |
| | 其他 | 3 个 `.json`、6 个 `.txt`、5 个 `.npy`、1 个 `.raw` | | |
| | 压缩包大小 | 10.7 GB(10,697,737,890 字节) | | |
| --- | |
| ## 2. 目录结构 | |
| ``` | |
| cap/ | |
| ├── hdf5/ # 每次采集一条压缩轨迹 | |
| │ ├── cups_order_right_hand_20260707_164634/ | |
| │ │ └── cups_order_right_hand_20260707_164634.hdf5 | |
| │ ├── cups_order_right_hand_20260707_165435/ | |
| │ │ └── cups_order_right_hand_20260707_165435.hdf5 | |
| │ ├── cups_order_right_hand_20260707_165654/ | |
| │ │ └── cups_order_right_hand_20260707_165654.hdf5 | |
| │ ├── cups_order_right_hand_20260707_165904/ | |
| │ │ └── cups_order_right_hand_20260707_165904.hdf5 | |
| │ └── cups_order_right_hand_20260707_170124/ | |
| │ └── cups_order_right_hand_20260707_170124.hdf5 | |
| └── raw_data/ # 原始多模态记录(图像 + 视频 + 标定) | |
| └── cups_order_right_hand_20260707_164634/ | |
| └── cups_order_right_hand_20260707_164634_extracted/ | |
| └── observe/ | |
| └── vision/ | |
| ├── left_hand_rgb/ # 左手腕视角(video + metadata) | |
| ├── right_hand_rgb/ # 右手腕视角 | |
| ├── head_zed_left/ # 头部 ZED 左目 | |
| ├── head_zed_right/ # 头部 ZED 右目 | |
| ├── head_global_rgb/ # 头部全局 RGB | |
| ├── head_global_depth/ # 头部全局深度 | |
| └── *_frames/ # 各视角抽帧后的 PNG 序列 | |
| ``` | |
| --- | |
| ## 3. 采集会话清单 | |
| | 会话 ID | 起始时间 | HDF5 轨迹 | 原始帧 | | |
| | --- | --- | --- | --- | | |
| | `cups_order_right_hand_20260707_164634` | 16:46:34 | ✅ | ✅ | | |
| | `cups_order_right_hand_20260707_165435` | 16:54:35 | ✅ | — | | |
| | `cups_order_right_hand_20260707_165654` | 16:56:54 | ✅ | — | | |
| | `cups_order_right_hand_20260707_165904` | 16:59:04 | ✅ | — | | |
| | `cups_order_right_hand_20260707_170124` | 17:01:24 | ✅ | — | | |
| > 说明:完整的多视角原始帧(18,915 张 PNG + 5 段 MP4)随**首个会话** `164634` 一同发布;其余 4 次采集提供压缩后的 HDF5 轨迹。 | |
| ## 4. 相机视角与帧数 | |
| | 视角目录 | 帧数(PNG) | 视频 | | |
| | --- | --- | --- | | |
| | `head_global_depth_frames` | 5,565 | ✅ | | |
| | `right_hand_rgb_frames` | 3,089 | ✅ | | |
| | `head_zed_right_frames` | 2,629 | ✅ | | |
| | `left_hand_rgb_frames` | 2,563 | ✅ | | |
| | `head_zed_left_frames` | 2,546 | ✅ | | |
| | `head_global_rgb_frames` | 2,522 | ✅ | | |
| 帧文件命名规则:`frame_%06d.png`。**编号并非严格连续**(采集过程中存在丢帧),使用时请按文件名排序取序列,不要假设 `i` 与 `i+1` 相邻。 | |
| ### 数据预览 | |
|  | |
|  | |
| | 预览文件 | 内容 | | |
| | --- | --- | | |
| | `preview_overview.png` | 6 路视角单帧总览 | | |
| | `preview_grid.gif` | 6 路视角同步动图(24 帧) | | |
| | `preview_right_hand_rgb.gif` | 右手腕视角动态预览 | | |
| | `preview_head_global_rgb.gif` | 头部全局 RGB 动态预览 | | |
| | `preview_head_global_depth.gif` | 头部全局深度动态预览 | | |
| --- | |
| ## 5. 下载 | |
| ### 5.1 huggingface-cli(推荐,支持断点续传) | |
| ```bash | |
| pip install -U "huggingface_hub[cli]" | |
| export HF_ENDPOINT=https://hf-mirror.com # 国内网络可加,境外可省略 | |
| huggingface-cli download dex-robot/cap cap.zip --repo-type dataset --local-dir ./cap_data | |
| ``` | |
| ### 5.2 Python | |
| ```python | |
| from huggingface_hub import hf_hub_download | |
| p = hf_hub_download("dex-robot/cap", "cap.zip", repo_type="dataset") | |
| print(p) | |
| ``` | |
| ### 5.3 直链 | |
| ``` | |
| https://huggingface.co/datasets/dex-robot/cap/resolve/main/cap.zip | |
| ``` | |
| --- | |
| ## 6. 解压与校验 | |
| ```bash | |
| # 1) 大小核对 | |
| stat -c %s cap.zip # 应为 10697737890 | |
| # 2) SHA256 核对 | |
| sha256sum cap.zip | |
| # f91c11ee1761822fa875d4783c1fd9388f6fa3f0fa3feeef6cd5c20775220c10 | |
| # 3) 逐文件 CRC 校验(18963 项全部 OK 即为通过) | |
| unzip -t cap.zip | |
| # 4) 解压到当前目录,得到 cap/ | |
| unzip -q cap.zip | |
| du -sh cap | |
| ``` | |
| 预期结果: | |
| ``` | |
| cap/ | |
| ├── hdf5/ (5 个 .hdf5) | |
| └── raw_data/ (18,934 个文件) | |
| ``` | |
| --- | |
| ## 7. 读取示例 | |
| ### 7.1 读取 HDF5 轨迹 | |
| ```python | |
| import h5py | |
| path = "cap/hdf5/cups_order_right_hand_20260707_164634/cups_order_right_hand_20260707_164634.hdf5" | |
| with h5py.File(path, "r") as f: | |
| def show(name, obj): | |
| if isinstance(obj, h5py.Dataset): | |
| print(f"D {name:50s} shape={obj.shape} dtype={obj.dtype}") | |
| else: | |
| print(f"G {name}") | |
| f.visititems(show) | |
| ``` | |
| ### 7.2 读取图像帧 | |
| ```python | |
| import cv2, glob | |
| frames = sorted(glob.glob( | |
| "cap/raw_data/cups_order_right_hand_20260707_164634/" | |
| "cups_order_right_hand_20260707_164634_extracted/observe/vision/" | |
| "head_global_rgb_frames/frame_*.png")) | |
| print("帧数:", len(frames)) | |
| img = cv2.imread(frames[0]) | |
| print(img.shape) # (H, W, 3) | |
| ``` | |
| --- | |
| ## 8. 推荐环境 | |
| ```bash | |
| pip install h5py opencv-python numpy | |
| ``` | |
| - Python ≥ 3.8 | |
| - 解压后约需 15 GB 可用磁盘(原始 PNG 序列体积较大) | |
| - 读取深度数据时注意 `head_global_depth` 可能为 16-bit PNG 或伴随 `.npy` / `.raw` 原始深度 | |
| --- | |
| ## 9. 许可与引用 | |
| - 许可:见仓库 `LICENSE`(未单独指定时请联系数据发布方) | |
| - 引用本数据集时请注明来源: | |
| ```bibtex | |
| @misc{cap_dataset_2026, | |
| title = {CAP: Cups Ordering Dexterous Manipulation Capture Dataset (Right Hand)}, | |
| author = {dex-robot}, | |
| year = {2026}, | |
| howpublished = {\url{https://huggingface.co/datasets/dex-robot/cap}} | |
| } | |
| ``` | |
| --- | |
| ## 10. 常见问题 | |
| **Q:下载中断怎么办?** | |
| `huggingface-cli download` 支持断点续传,重新执行同一条命令即可继续;也可加 `--max-workers 1` 降低并发提升稳定性。 | |
| **Q:`unzip` 报 "End-of-central-directory signature not found"?** | |
| 说明下载不完整、文件被截断,请校验文件大小是否为 **10,697,737,890 字节**、SHA256 是否匹配,不一致请重新下载。 | |
| **Q:只想用轨迹,不想下 10 GB 图像?** | |
| 目前仅提供整包发布;有细分需求请在仓库 Discussion 中提出。 | |
| **Q:深度图和 RGB 怎么对齐?** | |
| 同视角的 `*_frames` 与 MP4 按帧序号(`frame_%06d`)一一对应;跨视角对齐请使用 `raw_data/.../observe/vision/` 下的标定 JSON。 | |
| --- | |
| ## 11. 已知限制 | |
| 1. **帧编号不连续**:各视角 `frame_%06d.png` 的编号存在跳号(采集过程中的丢帧),例如 `right_hand_rgb_frames` 实际 3,089 帧、最大编号 3,746。请按文件名排序后的顺序使用,不要通过 `i+1` 推断下一帧。 | |
| 2. **原始帧仅覆盖首个会话**:5 次采集中,只有 `164634` 附带完整的多视角 PNG / MP4;其余 4 次仅有 HDF5 轨迹。 | |
| 3. **HDF5 内部结构随版本演进**:不同采集时间生成的 HDF5 其 group / dataset 名称可能有差异,读取时请先 `visititems` 打印结构再取数。 | |
| 4. 本数据集由一次中断的打包过程抢救重建而来(已通过全部 18,963 项 CRC 校验),末尾 1 个不完整的 PNG 帧已被剔除。 | |