ExylosAi/coffee-brew-cross-embodiment-rich-modality-sample

Cross-Embodiment Coffee Brew — Rich-Modality 10-Episode Inspection Sample

10 full-modality cross-embodiment coffee-brew episodes: 5 single-arm Franka Panda + 5 single-arm WidowXAI, 14,401 frames, 5 RGB views per robot, task-camera depth and segmentation, native robot state/action, end-effector trajectories, 6-DoF object poses, and QA annotations.

✅ Use it / ❌ Skip it

Use it for

• Inspecting loaders, schemas, camera coverage, depth, segmentation, object poses, annotations, and cross-embodiment differences before using the 150-episode sources.
• Testing visualization, filtering, QA, and preprocessing pipelines on both Panda and WidowXAI.
• Reviewing clean and deliberately suboptimal demonstrations. The cleanup sample also includes true task failures.

Skip it if you need

• A from-scratch training corpus. Ten episodes are not sufficient for policy training.
• A single shared state/action tensor across robots. Panda and WidowXAI retain different joint definitions and vector widths.
• Real-world data, force/torque, contact, tactile, point-cloud, or audio streams.

At a glance

Episodes / frames	10 / 14,401 (≈7.99 min @ 30 FPS)
Robot split	5 Panda + 5 WidowXAI
Selection split	Per robot: 2 successful / 3 suboptimal; all 5 remain task-successful
State/action	Panda 9-D; WidowXAI 8-D joint/gripper state; achieved next-frame action, not recorded controller commands
Cameras	5 RGB views per robot, 1280×960 H.264, no audio
Depth / segmentation	Metric depth and instance segmentation from right_cam_45
Other modalities	End-effector state/action, local/world TCP poses, 6-DoF object state, gripper semantics, phase/subtask QA
Format	Two robot-specific LeRobot v2.1 subsets + four Hugging Face Viewer configs
Repository footprint	≈6.81 GB
License	Not specified in either source repository

Additional camera modalities: Any RGB view can be supplied with additional synthetic modalities, including metric depth and instance segmentation, on request. These modalities are not included in this release unless explicitly listed above.

Load it

The robot frame schemas are intentionally separate. Select the embodiment explicitly:

from datasets import load_dataset

repo = "ExylosAi/coffee-brew-cross-embodiment-rich-modality-sample"
panda = load_dataset(repo, name="panda", split="train")
widowxai = load_dataset(repo, name="widowxai", split="train")

print(panda[0]["observation.state"])
print(widowxai[0]["observation.state"])
print(panda[0]["selection_bucket"], panda[0]["source_episode_index"])

Use name="episodes" for the combined 10-row provenance and quality index. Use name="videos" for the combined RGB browser.

Canonical nested Parquet is stored under each robot root and is best read with PyArrow:

from huggingface_hub import hf_hub_download
import pyarrow.parquet as pq

path = hf_hub_download(
    "ExylosAi/coffee-brew-cross-embodiment-rich-modality-sample",
    "robots/panda/data/chunk-000/episode_000000.parquet",
    repo_type="dataset",
)
episode = pq.read_table(path)
print(episode.schema)

Episode selection

Robot	Local ep	Source	Source ep	Inspection bucket	Task success	Grade	Score
panda	0	xrsc-coffee-brew-panda-150ep	30	successful	yes	B	4.43
panda	1	xrsc-coffee-brew-panda-150ep	59	successful	yes	B	3.86
panda	2	xrsc-coffee-brew-panda-150ep	101	suboptimal	yes	C	2.86
panda	3	xrsc-coffee-brew-panda-150ep	112	suboptimal	yes	C	3.29
panda	4	xrsc-coffee-brew-panda-150ep	144	suboptimal	yes	C	3.43
widowxai	0	xrsc-coffee-brew-widowxai-150ep	31	successful	yes	B	4.43
widowxai	1	xrsc-coffee-brew-widowxai-150ep	78	successful	yes	B	3.71
widowxai	2	xrsc-coffee-brew-widowxai-150ep	50	suboptimal	yes	C	2.71
widowxai	3	xrsc-coffee-brew-widowxai-150ep	33	suboptimal	yes	B	4.14
widowxai	4	xrsc-coffee-brew-widowxai-150ep	6	suboptimal	yes	C	2.71

Selection buckets summarize why an episode is present in this inspection sample. Detailed phase annotations, D1–D7 scores, raw measurements, confidence, and source provenance remain available in annotations.json, viewer_index/metadata.parquet, and sample_manifest.json.

Modalities

• RGB video: all source cameras for every selected episode.
• Metric depth: packed float32 NPZ, referenced frame-by-frame from canonical and Viewer Parquet.
• Instance segmentation: lossless FFV1 MKV plus per-row label maps.
• Robot state/action: native, embodiment-specific joint and gripper vectors; no padding or mixed robot tensor.
• End-effector: packed state/action plus local/world TCP poses and linear velocity.
• Objects: per-frame 6-DoF poses, orientation, velocity, and task-specific state.
• QA: task outcome, failure reason, phase ranges, execution quality, task alignment, D1–D7 metrics, composite score, confidence, and grade.

Source revisions

The sample is reproducibly derived from these immutable private snapshots:

• VadRobotics/xrsc-coffee-brew-panda-150ep@9ea52935351cf60305b828d8735a31831a32f623
• VadRobotics/xrsc-coffee-brew-widowxai-150ep@bf305cff00475320e5f5c8729d25dcee613f96f3

Media payloads are byte-identical copies of the selected source files. Episode indices and paths are remapped only inside the five-episode robot subsets. sample_manifest.json preserves the complete mapping.

File layout

robots/panda/        meta · data · videos · annotations for 5 Panda episodes
robots/widowxai/     meta · data · videos · annotations for 5 WidowXAI episodes
viewer_data/         separate flattened panda and widowxai frame configs
viewer_index/        combined 10-row episode/provenance config
viewer_videos/       combined RGB Video-feature config
assets/              dataset_preview.gif showing RGB, depth, and segmentation
sample_manifest.json · annotations.json

Notes and limitations

• This is a synthetic inspection sample, not a statistically representative training or evaluation benchmark.
• Robot schemas are deliberately separate. Do not concatenate state/action vectors without an explicit embodiment adapter.
• The joint-space and Cartesian actions are derived from achieved next-frame state; no commanded target stream exists.
• RGB has no audio. Depth and segmentation are available from one task-specific camera.
• Both 150-episode coffee sources contain zero task_success=false episodes, so this sample does not claim a task-failure example.
• Some suboptimal selections contain a failed run_coffee_brew phase followed by task completion. They are not labeled as recovery because no retry or corrective action is explicitly verified.
• No standalone license file or explicit license terms were present in the source repositories. Do not assume redistribution rights.

Citation

If you use this sample, cite this repository plus the exact sample commit and source revisions listed above.