Delete docs/vlac2_public_release.md
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docs/vlac2_public_release.md
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# VLAC2 Public Release
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这是一个最小使用说明,主要说明拿到发布包后怎么放数据、怎么抽帧、以及后续该用哪个 benchmark JSON。
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## 发布包包含什么
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```text
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vlac2_release/
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├── benchmark_json/
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├── vlac2_release_data/
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│ ├── vlac2_release_data_part*.tar.zst
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│ └── vlac2_release_data_archives_manifest.json
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├── scripts/
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└── docs/
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```
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- `benchmark_json/`
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- 公开提供的 benchmark 文件。
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- 包含 `train/` 和 4 个 `test_*` bucket。
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- `vlac2_release_data/`
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- 放原始数据集分片归档。
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- 解压全部归档后,会得到 `ARX-data/`、`droid_lerobot/`、`libero/` 等原始数据目录。
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- `scripts/extract_vlac2_release_raw_archives.sh`
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- 先把 `vlac2_release_data/` 下所有 `vlac2_release_data_part*.tar.zst` 解压到 `vlac2_release_data/`。
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- `scripts/extract_vlac2_release_frames.py`
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- 原始数据解压完成后,再运行这个脚本做抽帧。
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- 如果不手动指定 `--output-root`,脚本会自动把图片写到 `<release-root>/_extracted_frames/`,并在首次运行时创建该目录。
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## 基础使用
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### 1. 解压原始数据
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先把 `vlac2_release_data/` 下的所有归档解压到:
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```text
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<release-root>/vlac2_release_data/
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```
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最简单的方式是直接运行:
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```bash
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bash scripts/extract_vlac2_release_raw_archives.sh /path/to/vlac2_release/vlac2_release_data
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```
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如果你想手动解压,也可以逐个运行:
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```bash
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for archive in /path/to/vlac2_release/vlac2_release_data/vlac2_release_data_part*.tar.zst; do
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tar --zstd -xf "${archive}" -C /path/to/vlac2_release/vlac2_release_data
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done
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```
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解压完成后,目录结构应当类似于:
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```text
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<release-root>/vlac2_release_data/ARX-data/...
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<release-root>/vlac2_release_data/droid_lerobot/...
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<release-root>/vlac2_release_data/libero/...
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<release-root>/vlac2_release_data/libero_zty50/...
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<release-root>/vlac2_release_data/VLABench_5/...
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```
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### 2. 运行抽帧
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在 release 根目录下运行:
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```bash
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python scripts/extract_vlac2_release_frames.py --release-root /path/to/vlac2_release
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```
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默认行为:
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- 自动读取 `benchmark_json/` 里的 benchmark 文件
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- 自动找到对应原始视频
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- 如果未指定 `--output-root`,把抽出的帧写到 `_extracted_frames/...`
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- 图片命名格式为:
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- `{frame_idx}-{num_frames}.jpg`
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如果只想抽 benchmark 主视角,可以运行:
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```bash
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python scripts/extract_vlac2_release_frames.py \
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--release-root /path/to/vlac2_release \
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--view-mode main-only
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```
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如果想强制重抽已经存在的帧,可以运行:
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```bash
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python scripts/extract_vlac2_release_frames.py \
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--release-root /path/to/vlac2_release \
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--overwrite-existing
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```
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## 后续使用哪个文件
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后续测评只使用:
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- `benchmark_json/.../video_progress_benchmark_file.json`
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不需要用户自己重建 benchmark JSON。
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## 路径说明
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`video_progress_benchmark_file.json` 里的图片路径使用占位前缀:
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- `__VLAC2_RELEASE_ROOT__/_extracted_frames/...`
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实际使用时,把它替换成你本地 release 根目录的绝对路径即可。例如:
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- `__VLAC2_RELEASE_ROOT__/_extracted_frames/...`
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- `/abs/path/to/vlac2_release/_extracted_frames/...`
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## 依赖
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抽帧脚本至少需要一个解码后端:
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- `opencv-python`
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- 或 `imageio`
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如果两者都没有安装,脚本会直接报错退出。
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