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Readers arrive from the paper or the blog, so the card no longer restates the
capture protocol, calibration steps, annotation pipeline, or per-method
benchmark findings, all of which are covered better there. What remains is what
decides whether to request access: scale, modalities, the two capture scales,
the precision figures, and the access terms. Body drops from ~400 lines to ~170,
and from seven figures to one.

Badges were stacking because HF only exempts shields.io images from its
'a:has(img:only-child) { display: block }' rule when they are wrapped in a link;
the two unlinked ones broke the row. All four now link.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

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  1. README.md +89 -313
README.md CHANGED
@@ -126,53 +126,38 @@ extra_gated_button_content: Submit access request
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  </p>
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  <p>
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  <a href="https://ace-data-engine.github.io/ACE-Data-0/"><img src="https://img.shields.io/badge/Blog-ACE--Data--0-0054A6?logo=googlechrome&amp;logoColor=white" alt="Blog"></a>
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- <img src="https://img.shields.io/badge/Technical_Report-Coming_Soon-6B7280" alt="Technical report coming soon">
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  <a href="./LICENSE"><img src="https://img.shields.io/badge/License-Research_Only-A33B20" alt="Research-only license"></a>
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- <img src="https://img.shields.io/badge/Data_Files-Coming_Soon-6B7280" alt="Data files coming soon">
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  </p>
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  <p>
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  <img src="https://ace-data-engine.github.io/ACE-Data-0/assets/images/data-teaser.webp" width="100%" alt="ACE-Data-0 teaser: table-scale and room-scale ambient capture with synchronized multi-modal streams">
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  </p>
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  <p>
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- <b>ACE transforms real home environments into spatially calibrated, temporally synchronized recording studios for embodied AI.</b>
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  </p>
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  <p>
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- ▶ <a href="https://ace-data-engine.github.io/ACE-Data-0/assets/videos/teaser-video.mp4">Watch the demo video</a>
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  &nbsp;·&nbsp;
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- <a href="https://ace-data-engine.github.io/ACE-Data-0/">Read the full story on the blog</a>
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  </p>
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  </div>
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146
- ## Dataset Description
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148
- ### Dataset Summary
 
 
 
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- Embodied intelligence faces a fundamental data bottleneck. Learning to act in the physical world
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- requires more than observing what an action looks like: models must capture how first-person
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- perception, whole-body motion, dexterous manipulation, object state, sound, and touch evolve
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- **together** as humans pursue goals over time. Existing datasets typically fragment this experience
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- across viewpoints, modalities, or spatial scales, leaving the full perception-action loop only
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- partially observed.
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- We introduce the **A**mbient **C**apture **E**ngine (**ACE**), a human-centric data engine that
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- transforms real home environments into spatially calibrated, temporally synchronized recording
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- studios. ACE operates at two complementary scales:
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-
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- - **Table-scale capture** resolves fine-grained hand-object manipulation around work surfaces.
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- - **Room-scale capture** preserves whole-body motion, locomotion, and interactions distributed
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- across a furnished home.
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-
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- Across both settings, ACE records egocentric and multi-view exocentric video, full-body and
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- articulated hand motion, high-fidelity object geometry and 6-DoF trajectories, multi-channel audio,
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- and tactile signals as a unified multisensory stream.
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-
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- Using ACE, we build **ACE-Data-0**, a large-scale dataset of natural, goal-directed household
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- activity spanning atomic manipulation, long-horizon chains of household activities, and human-scene
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- interaction.
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-
173
- ### Dataset Scale
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-
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- | Statistic | ACE-Data-0 |
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  | --- | ---: |
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  | Recorded activity | 150 hours+ |
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  | Video frames | 17M+ |
@@ -182,312 +167,108 @@ interaction.
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  | Capture environments | 2 |
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  | Views per moment | 8+ exocentric, plus 4 egocentric fisheye |
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  | Take length | minutes, not seconds; up to 20-30 min for long-horizon chains |
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- | Raw data rate | approx. 1 TB per hour of session |
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-
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- These values describe the planned ACE-Data-0 release and will be verified in the final release
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- manifest.
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-
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- An *episode* is a contiguous segment of interaction that realizes one meaningful sub-goal, the
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- smallest unit that stays semantically self-contained as a training example. Episodes are counted
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- within takes rather than recorded in isolation, so the actions preceding and following each segment
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- are preserved in the same stream.
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195
- ### What Makes ACE-Data-0 Different
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197
- - **Nothing is fragmented.** Egocentric video, exocentric video, body and hand motion, object pose,
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- audio, and touch are recorded in one pass, on one clock, in one world frame, not assembled from
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- separate sources.
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- - **Real homes, not laboratories.** The room-scale site is a fully furnished 200 m² apartment. The
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- clutter, furniture occlusion, and spatial constraints that lab capture removes are exactly what
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- makes home interaction hard, and they are kept.
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- - **Long horizons.** Participants receive **goal-level** instructions ("prepare a cup of tea and
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- serve it at the table") rather than step-by-step scripts. Planning, hesitation, and improvisation
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- enter the data by themselves.
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- - **Annotations are measured, not estimated.** Human states, object states, and contact are
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- metrically tracked or directly sensed. Pose reprojections, bounding boxes, motion trails, and
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- contact events follow by projection, with no estimation model in the loop. Only the textual
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- descriptions are generated, and those are human-verified.
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211
- ## Dataset Structure
 
 
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- ### Data Modalities
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-
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- Each take is organized around a shared timeline and a shared world coordinate frame.
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-
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- | Modality | Contents | Role |
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- | --- | --- | --- |
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- | Egocentric video | 4 fisheye views, IMU readings, per-frame 6-DoF headset pose from the tracked rig | Participant-centric perception |
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- | Exocentric video | 8 synchronized fixed-camera views, each with intrinsics and world-frame pose | Scene, body, and object context |
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- | Human motion | 41-joint body skeletons plus converted SMPL-X parameters | Metric kinematic supervision |
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- | Hand motion | Articulated hand state and per-view projections | Dexterous manipulation supervision |
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- | Object state | Scanned or 2DGS-reconstructed meshes, identity, 6-DoF pose at 60 Hz, motion trails | Dynamic scene-state supervision |
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- | Audio | Synchronized multi-source audio from the exocentric cameras and the headset | Contact, appliance, and ambient events |
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- | Tactile | Hand-shaped pressure grids with calibrated normalization and baseline correction | Physical interaction supervision |
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- | Calibration | Camera intrinsics, extrinsics, headset pose, world registration, cross-stream timeline | Cross-view and cross-modal alignment |
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- | Language | Goal- and activity-level descriptions | Semantic supervision |
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-
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- Because every take ships its calibration and its timeline as data, any tracked 3D point can be
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- projected onto any pixel of any view, and any two streams can be paired at any instant. Modalities
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- can therefore be combined freely for training, as inputs or as supervision, without rerunning any
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- part of the capture pipeline.
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-
234
- ### Annotations
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-
236
- | Type | Contents |
237
  | --- | --- |
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- | Object | category label, 2D/3D bounding boxes in all views, per-frame 6-DoF pose, mesh, motion trail |
239
- | Human | full-body pose per frame, reprojected as pixel-aligned 2D overlays in every view plus metric 3D in the world frame |
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- | Hand | articulated finger configurations during dexterous manipulation |
241
- | Tactile | per-frame pressure reading, aligned to the visual streams and to the object currently in use |
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- | Audio and language | sound-event descriptions, plus the take's goal and the sequence of sub-goals reaching it |
243
- | Calibration and sync | per-camera intrinsics, camera poses in the shared world frame, full cross-stream timeline |
 
244
 
245
- ### Activity Families
 
 
246
 
247
- | Take type | Content | Typical length |
248
- | --- | --- | --- |
249
- | **Atomic HOI** | 1-3 household tasks drawn from 15+ activity types (pouring water, drinking, making tea, watering plants, chopping vegetables, cooking, tidying up) | ~3 min |
250
- | **Chain of HOI** | the full range of short tasks combined into one continuous activity; sub-tasks interleave freely, and every take ends with the scene tidied back into order | ~20-30 min |
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- | **Human-Scene Interaction (HSI)** | almost no objects; whole-body motion (walking, exercising) and human-scene contact (sitting, lying, leaning) with tables, chairs, and sofas | ~5 min |
252
-
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- <div align="center">
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- <img src="https://ace-data-engine.github.io/ACE-Data-0/assets/images/script-example.webp" alt="Examples of ACE-Data-0 task categories and long-horizon capture scripts" width="88%">
255
- <br>
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- <img src="https://ace-data-engine.github.io/ACE-Data-0/assets/images/statistics.webp" alt="ACE-Data-0 task families and dataset statistics" width="88%">
257
- </div>
258
-
259
- ## Dataset Creation
260
-
261
- ### Capture System
262
 
263
  | | Table-scale | Room-scale |
264
  | --- | --- | --- |
265
- | Space | ~30 m² workspace around a work desk | ~200 m² furnished apartment (kitchen, dining, living room, bedroom) |
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- | Target | fine-grained dexterous hand-object manipulation | whole-body activity, locomotion, scene-wide interaction |
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- | Exocentric RGB | 8 × GoPro at close range (0.3-0.5 m), 1920×1080 @ 30 FPS | 8 × ZED One on adjustable poles, 1920×1080 @ 30 FPS, at least 4 views on any point |
268
  | Optical mocap | 16 × OptiTrack PrimeX 22 | 12 × OptiTrack PrimeX 22 |
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- | Hand pose | RANSAC triangulation of 2D keypoints from 8 exo views, plus manual refinement | Manus mocap gloves @ 60 Hz |
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- | Objects | 25+ interactable instances, 8+ categories | 25+ interactable instances |
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-
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- **Shared across both sites**
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-
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- | Device | Role | Spec |
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- | --- | --- | --- |
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- | ACE-Ego-Head-V02 Lite | Egocentric capture | 4 fisheye cameras (front/rear, L/R), 1088×1280 @ 20 FPS, onboard IMU, 5 tracked markers |
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- | OptiTrack PrimeX 22 | Optical motion capture | 2048×1088 @ 60 Hz; 41 body markers per participant, plus objects and the ego rig |
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- | ACE-Sense-Glove Lite | Contact pressure | full-palm pressure map, both hands |
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- | GoPro / ACE-Ego-Head | Audio | contact events, appliance operation, ambient scene sound |
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-
281
- <table align="center" width="100%">
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- <tr>
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- <td width="50%" align="center"><img src="https://ace-data-engine.github.io/ACE-Data-0/assets/images/setup-ace-t.webp" width="100%" alt="Table-scale configuration"></td>
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- <td width="50%" align="center"><img src="https://ace-data-engine.github.io/ACE-Data-0/assets/images/setup-ace-r.webp" width="100%" alt="Room-scale configuration"></td>
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- </tr>
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- <tr>
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- <td align="center"><sub><b>Table-scale configuration</b></sub></td>
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- <td align="center"><sub><b>Room-scale configuration</b></sub></td>
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- </tr>
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- </table>
291
-
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- ### Capture Protocol
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-
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- Participants receive household goals rather than fixed sequences of atomic actions. They choose
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- routes, object instances, grasp strategies, subtask order, pauses, and recovery behavior. This
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- preserves natural variation while keeping the activity goal and the measured physical state
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- available as supervision. Each participant completes all designed tasks across a 2-day session.
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-
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- Every session follows the same five-step protocol at both sites:
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-
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- 1. **Scene preparation.** Objects are placed at randomized yet plausible initial positions.
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- 2. **Participant setup.** The participant puts on the mocap suit, the headset, and the gloves, then
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- performs a short T-pose routine that registers their skeleton with the tracking system.
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- 3. **Task briefing.** The participant receives a goal-level instruction verbally; how to achieve it
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- is left entirely to them.
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- 4. **Recording.** The take opens with the clock glance described below, after which all sensors
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- record continuously while an operator monitors stream health on a live dashboard.
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- 5. **Post-checks.** Synchronization and tracking quality are verified after each take, and failed
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- takes are flagged for re-capture.
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-
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- <div align="center">
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- <img src="https://ace-data-engine.github.io/ACE-Data-0/assets/images/data-procedure.webp" alt="ACE capture, temporal synchronization, and annotation workflow" width="88%">
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- </div>
314
-
315
- ### Temporal Synchronization
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-
317
- All devices are registered to the OptiTrack 60 Hz clock, which internally delivers strictly
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- simultaneous frames. Because recorded camera timestamps lag true exposure by approximately 0.29 s
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- and drift slowly, we instead let each camera **photograph a clock**: the mocap host displays its own
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- time as a nanosecond-resolution QR code, and readings sampled across a take are fitted with a
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- constant offset plus a slow drift.
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-
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- - Residual alignment error: **millisecond level** (within a single mocap frame).
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- - Egocentric fisheye views, mutual misalignment: **< 2 ms**.
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- - Independent check, per-camera offsets re-estimated during calibration: **< 4 ms**.
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- - Tactile gloves are aligned to the headset by matching correlated IMU motion templates.
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-
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- Every take ships a table mapping each camera frame, egocentric and exocentric alike, to its 60 Hz
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- mocap frame.
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-
331
- ### Spatial Calibration
332
 
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- The exocentric cameras never move but barely share a view; the egocentric cameras move every frame.
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- Both are solved through the motion-capture system rather than through co-visibility.
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- - **Exocentric.** An ArUco board with a retroreflective marker at each corner is visible to the RGB
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- cameras and the infrared cameras at once, bridging cameras that share no field of view. Median
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- reprojection error on held-out frames: **< 3 px**.
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- - **Egocentric.** The 5 markers on the headset chassis form a rigid body tracked at 60 Hz, so the
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- only unknown is the fixed camera-to-body transform, solved as hand-eye calibration and refined by
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- joint bundle adjustment. Median reprojection error: **approx. 2 px**. Camera poses are therefore
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- *measured* rather than estimated, and do not drift.
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- Calibration is re-verified twice a day. This alignment lets one modality supervise another without
345
- uncertain temporal or spatial correspondence.
346
-
347
- ### Annotation Process
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-
349
- Most annotations are derived from the synchronized and calibrated capture system rather than
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- estimated independently from video. Because the human and object annotations come from measured 3D
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- states rather than image-based detectors, they remain correct where detectors typically fail: under
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- furniture occlusion, extreme viewpoints, and motion blur.
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-
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- Textual descriptions are the one generated type. Gemini-3.1-pro-preview watches the ego-view video
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- and describes each time span in natural language, segment by segment; human annotators then check
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- the auto-generated labels and correct the descriptions by hand.
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-
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- <div align="center">
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- <b>Human pose annotation</b><br>
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- <img src="https://ace-data-engine.github.io/ACE-Data-0/assets/images/annotation-smplx-sg.webp" alt="Human pose annotation across synchronized views and 3D motion" width="88%">
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- <br><br>
362
- <b>Object state annotation</b><br>
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- <img src="https://ace-data-engine.github.io/ACE-Data-0/assets/images/annotation-obj-sg.webp" alt="Object state annotation across synchronized views and 3D motion" width="88%">
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- <br><br>
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- <b>Articulated hand annotation</b><br>
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- <img src="https://ace-data-engine.github.io/ACE-Data-0/assets/images/annotation-hand.webp" alt="Articulated hand annotation" width="88%">
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- <br><br>
368
- <b>Tactile annotation</b><br>
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- <img src="https://ace-data-engine.github.io/ACE-Data-0/assets/images/annotation-tactile.webp" alt="Tactile annotation" width="88%">
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- <br><br>
371
- <b>Language annotation</b><br>
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- <img src="https://ace-data-engine.github.io/ACE-Data-0/assets/images/annotation-caption.webp" alt="Language annotation" width="88%">
373
- </div>
374
-
375
- ### Source Data
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-
377
- ACE-Data-0 consists of original recordings collected with the ACE capture system. It is not
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- assembled from scraped internet video or third-party household datasets.
379
 
380
  ## Benchmark
381
 
382
- <div align="center">
383
- <img src="https://ace-data-engine.github.io/ACE-Data-0/assets/images/benchmark-steps.webp" alt="Three-level benchmark: signals, scene components, interactions" width="88%">
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- </div>
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-
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- We hold out **10 hours** of capture as a test set and evaluate **30+ published methods** with their
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- officially released checkpoints, across three levels that mirror the capabilities an embodied agent
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- must chain together: sensing contact, estimating scene state, mastering hand-object coordination.
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-
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- **1. Low-level signals: tactile from vision.** Predict full-hand grasp pressure from egocentric
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- video, evaluated against synchronized glove measurements (temporal accuracy, contact IoU, volumetric
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- IoU, center-of-pressure error). *Finding:* detecting **when** contact occurs is far easier than
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- recovering **where** pressure is distributed. The best method's absolute C-IoU and V-IoU remain
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- modest, and a substantial generalization gap persists.
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-
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- **2. Scene components: human motion estimation.** 22 methods across per-frame, temporal,
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- scene-aware, single-view exo, multi-view exo, and egocentric settings, all against the same metric
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- ground truth. *Findings:* (i) strong Procrustes-aligned pose accuracy does **not** imply an accurate
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- world-frame trajectory, and the two rankings differ; (ii) scene context mainly helps locate the body
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- in the room rather than improve joint configuration; (iii) egocentric methods lag because much of
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- the body is out of frame.
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-
403
- **3. Embodied interaction: hand motion from ego and exo views.** The same interactions are recorded
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- simultaneously from both viewpoints, so the comparison changes only the viewpoint. *Findings:*
405
- exocentric methods reach approximately 9.1 mm PA-MPJPE and a 63 mm world-frame trajectory error,
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- while egocentric world-space methods remain near 100 mm. This points at **egomotion estimation**,
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- not finger articulation, as the dominant error source in egocentric hand reconstruction.
408
 
409
- Full tables, metric definitions, and per-method results are in the technical report.
410
 
411
- ## Considerations for Using the Data
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-
413
- ### Intended Uses
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-
415
- ACE-Data-0 is intended for non-commercial academic research on:
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-
417
- - Embodied perception and interaction understanding
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- - Human and hand motion recovery
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- - Human-object and human-scene interaction
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- - Multi-view and egocentric video understanding
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- - Cross-modal learning across vision, motion, audio, and touch
422
- - Object-state estimation and dynamic 3D scene understanding
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- - Imitation learning, world models, and vision-language-action systems
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-
425
- ### Out-of-Scope and Prohibited Uses
426
-
427
- The dataset is not intended for:
428
-
429
- - Identifying, re-identifying, or profiling participants
430
- - Biometric recognition or surveillance
431
- - Inferring sensitive personal attributes
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- - Training systems for harmful, deceptive, or privacy-invasive applications
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- - Any commercial purpose
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- - Representing all homes, cultures, bodies, abilities, or household practices without further
435
- validation
436
-
437
- The [ACE-Data-0 Research License Agreement](./LICENSE) is binding and defines the full set of
438
- restrictions.
439
-
440
- ### Personal and Sensitive Information
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-
442
- All participants volunteered and signed a written informed consent form covering data collection and
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- research release, including the appearance of their faces. The dataset contains identifiable
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- individuals. Any attempt to identify, contact, locate, or infer private attributes of a participant,
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- and any use of the data for biometric identification, surveillance, or profiling, is prohibited by
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- the license and will result in access being revoked.
447
 
448
- If you are a participant and wish to have your recordings withdrawn, reach the authors through the
449
- Community tab of this repository or through the project page, and the affected takes will be removed
450
- from subsequent releases.
 
 
 
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452
- ### Known Limitations
 
 
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454
- - **Site coverage.** Two sites only, hence limited variation in layouts, furnishings, and lighting.
455
- - **Instrumented ground truth.** Tracked objects must be scanned and marked in advance. State
456
- changes of articulated mechanisms, fluids, and deformable materials are not annotated.
457
- - **Visible instrumentation.** The mocap suit, gloves, headset, and markers appear in the recordings
458
- and may introduce dataset-specific visual cues.
459
 
460
- ## Access and Download
 
 
 
461
 
462
- This repository is **gated**. Access is granted to named individuals for **non-commercial academic
463
- research only**.
 
 
464
 
465
- 1. Sign in to Hugging Face and submit the access form on this page. Access is granted once you
466
- accept the terms.
467
- 2. Use your **institutional** email and describe your intended research. What you submit is recorded
468
- as part of your licence, and inaccurate information is a breach of the agreement.
469
- 3. Access is **personal and non-transferable**. Collaborators and students must each submit their
470
- own request; redistributing the data terminates your licence and revokes your access.
471
 
472
- For commercial licensing or industrial collaboration, open a thread on the Community tab of this
473
- repository instead of submitting the form.
474
 
475
- > **Status.** Data files are not published yet. This card describes the dataset and its capture
476
- > system; repository organization, storage requirements, checksums, and loading examples will be
477
- > added at release time. Because the dataset comprises large synchronized media and sensor streams,
478
- > the release will use sharded archives rather than direct browser downloads. Approved users retain
479
- > access across the release.
480
 
481
  ## License
482
 
483
- Released under the [ACE-Data-0 Research License Agreement](./LICENSE): non-commercial academic
484
- research use only, no redistribution, no re-identification. Please read it in full before requesting
485
- access.
486
 
487
  ## Citation
488
 
489
- If you use ACE-Data-0 in your research, please cite:
490
-
491
  ```bibtex
492
  @article{cao2026acedata0,
493
  title = {ACE-Data-0: Human-Centric Ambient Capture as Embodied Data Engine},
@@ -500,14 +281,9 @@ If you use ACE-Data-0 in your research, please cite:
500
  }
501
  ```
502
 
503
- The arXiv identifier above is a placeholder and will be replaced when the technical report is
504
- posted.
505
 
506
  ## Contact
507
 
508
- For project updates, visit the [ACE-Data-0 blog](https://ace-data-engine.github.io/ACE-Data-0/),
509
- which hosts the full story, the audio-enabled demo, interactive multi-camera examples, and a Chinese
510
- version.
511
-
512
- Questions about access, licensing, or annotations should be raised on the Community tab of this
513
- repository.
 
126
  </p>
127
  <p>
128
  <a href="https://ace-data-engine.github.io/ACE-Data-0/"><img src="https://img.shields.io/badge/Blog-ACE--Data--0-0054A6?logo=googlechrome&amp;logoColor=white" alt="Blog"></a>
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+ <a href="https://ace-data-engine.github.io/ACE-Data-0/"><img src="https://img.shields.io/badge/Technical_Report-Coming_Soon-6B7280" alt="Technical report coming soon"></a>
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  <a href="./LICENSE"><img src="https://img.shields.io/badge/License-Research_Only-A33B20" alt="Research-only license"></a>
131
+ <a href="https://ace-data-engine.github.io/ACE-Data-0/"><img src="https://img.shields.io/badge/Data_Files-Coming_Soon-6B7280" alt="Data files coming soon"></a>
132
  </p>
133
  <p>
134
  <img src="https://ace-data-engine.github.io/ACE-Data-0/assets/images/data-teaser.webp" width="100%" alt="ACE-Data-0 teaser: table-scale and room-scale ambient capture with synchronized multi-modal streams">
135
  </p>
136
  <p>
137
+ <b>ACE turns real home environments into spatially calibrated, temporally synchronized recording studios for embodied AI.</b>
138
  </p>
139
  <p>
140
+ ▶ <a href="https://ace-data-engine.github.io/ACE-Data-0/assets/videos/teaser-video.mp4">Demo video</a>
141
  &nbsp;·&nbsp;
142
+ <a href="https://ace-data-engine.github.io/ACE-Data-0/">Full story, figures, and interactive examples on the blog</a>
143
  </p>
144
  </div>
145
 
146
+ ## What this is
147
 
148
+ Learning to act in the physical world requires more than observing what an action looks like: models
149
+ must capture how first-person perception, whole-body motion, dexterous manipulation, object state,
150
+ sound, and touch evolve **together** as humans pursue goals over time. Existing datasets fragment
151
+ this experience across viewpoints, modalities, or spatial scales.
152
 
153
+ ACE-Data-0 records all of it in one pass, on one clock, in one world frame. Participants receive
154
+ **goal-level** instructions ("prepare a cup of tea and serve it at the table") rather than
155
+ step-by-step scripts, so planning, hesitation, and improvisation enter the data by themselves. Human
156
+ states, object states, and contact are metrically tracked or directly sensed, so the annotations are
157
+ **measured rather than estimated**: they stay correct under furniture occlusion, extreme viewpoints,
158
+ and motion blur, where image-based detectors fail.
159
 
160
+ | | |
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
161
  | --- | ---: |
162
  | Recorded activity | 150 hours+ |
163
  | Video frames | 17M+ |
 
167
  | Capture environments | 2 |
168
  | Views per moment | 8+ exocentric, plus 4 egocentric fisheye |
169
  | Take length | minutes, not seconds; up to 20-30 min for long-horizon chains |
 
 
 
 
 
 
 
 
 
170
 
171
+ These values describe the planned release and will be verified in the final release manifest.
172
 
173
+ ## What each take contains
 
 
 
 
 
 
 
 
 
 
 
 
174
 
175
+ Every take shares one timeline and one world coordinate frame, and ships its own calibration and
176
+ sync tables as data. Any tracked 3D point can therefore be projected onto any pixel of any view, and
177
+ any two streams paired at any instant, without rerunning any part of the capture pipeline.
178
 
179
+ | Modality | Contents |
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
180
  | --- | --- |
181
+ | Egocentric video | 4 fisheye views @ 20 FPS, IMU, per-frame 6-DoF headset pose from the tracked rig |
182
+ | Exocentric video | 8 synchronized views @ 30 FPS, each with intrinsics and world-frame pose |
183
+ | Human motion | 41-joint skeletons, articulated hand poses, converted SMPL-X parameters |
184
+ | Object state | scanned or 2DGS meshes, 6-DoF pose @ 60 Hz, 2D/3D boxes in all views, motion trails |
185
+ | Audio | multi-source, from the exocentric cameras and the headset |
186
+ | Tactile | full-palm pressure grids, normalized and baseline-corrected |
187
+ | Language | per-segment activity descriptions, take goal, and its sequence of sub-goals |
188
 
189
+ Takes come in three families: **atomic HOI** (1-3 household tasks, ~3 min), **chains of HOI** (one
190
+ continuous activity of ~20-30 min ending with the scene tidied back into order), and **human-scene
191
+ interaction** (whole-body motion and furniture contact, almost no objects, ~5 min).
192
 
193
+ ## How it was captured
 
 
 
 
 
 
 
 
 
 
 
 
 
 
194
 
195
  | | Table-scale | Room-scale |
196
  | --- | --- | --- |
197
+ | Space | ~30 m² desk workspace | ~200 m² furnished apartment |
198
+ | Target | fine-grained hand-object manipulation | whole-body activity and locomotion |
199
+ | Exocentric RGB | 8 × GoPro at 0.3-0.5 m | 8 × ZED One, at least 4 views on any point |
200
  | Optical mocap | 16 × OptiTrack PrimeX 22 | 12 × OptiTrack PrimeX 22 |
201
+ | Hand pose | triangulated from 8 exo views, manually refined | Manus mocap gloves @ 60 Hz |
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
202
 
203
+ Participants wear an ACE-Ego-Head-V02 Lite headset (4 fisheye cameras, IMU, 5 tracked markers), a
204
+ 41-marker mocap suit, and full-palm tactile gloves.
205
 
206
+ Two numbers carry the credibility of everything above. **Temporal:** all devices are registered to
207
+ the OptiTrack 60 Hz clock by photographing a nanosecond-resolution clock displayed on the mocap
208
+ host, giving millisecond-level residuals, within a single mocap frame. **Spatial:** an ArUco board
209
+ with retroreflective corners bridges exocentric cameras that share no field of view (median
210
+ reprojection error < 3 px), while the headset is solved by hand-eye calibration against its tracked
211
+ rig (~2 px), so egocentric camera poses are measured rather than estimated and do not drift.
 
212
 
213
+ The blog and the technical report cover the capture protocol, calibration, and annotation pipeline
214
+ in full.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
215
 
216
  ## Benchmark
217
 
218
+ We hold out 10 hours as a test set and evaluate 30+ published methods across three levels: tactile
219
+ inference from video, human motion recovery, and hand motion from egocentric and exocentric views.
220
+ Existing methods degrade sharply under contact, occlusion, egomotion, and long horizons. In
221
+ particular, strong per-frame pose accuracy does not imply an accurate world-frame trajectory, and
222
+ egomotion, not finger articulation, dominates the error in egocentric hand reconstruction. Full
223
+ tables are in the technical report.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
224
 
225
+ ## Access
226
 
227
+ This repository is **gated**. Access is granted to named individuals for **non-commercial academic
228
+ research only**, and takes effect once you accept the terms on the access form above.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
229
 
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+ - Use your **institutional** email and describe your intended research. What you submit is recorded
231
+ as part of your licence; inaccurate information is a breach of the agreement.
232
+ - Access is **personal and non-transferable**. Collaborators and students must each submit their own
233
+ request. Redistributing the data terminates your licence and revokes your access.
234
+ - For commercial licensing or industrial collaboration, open a thread on the Community tab instead
235
+ of submitting the form.
236
 
237
+ > **Data files are not published yet.** Repository layout, storage requirements, checksums, and
238
+ > loading examples will be added at release time. Because the streams are large, the release will
239
+ > use sharded archives rather than direct browser downloads. Approved users keep their access.
240
 
241
+ ## Intended and prohibited uses
 
 
 
 
242
 
243
+ Intended for non-commercial academic research on embodied perception, human and hand motion
244
+ recovery, human-object and human-scene interaction, egocentric and multi-view video understanding,
245
+ cross-modal learning across vision, motion, audio, and touch, and imitation learning, world models,
246
+ and vision-language-action systems.
247
 
248
+ **Not** for identifying, re-identifying, or profiling participants; biometric recognition or
249
+ surveillance; inferring sensitive personal attributes; any commercial purpose; or representing all
250
+ homes, cultures, bodies, abilities, or household practices without further validation. The
251
+ [LICENSE](./LICENSE) is binding and defines the full set of restrictions.
252
 
253
+ All participants volunteered and signed informed consent covering data collection and research
254
+ release, including the appearance of their faces. **The dataset contains identifiable individuals.**
255
+ If you are a participant and want your recordings withdrawn, reach us through the Community tab and
256
+ the affected takes will be removed from subsequent releases.
 
 
257
 
258
+ ## Limitations
 
259
 
260
+ Two sites only, so limited variation in layouts, furnishings, and lighting. Tracked objects must be
261
+ scanned and marked in advance, and state changes of articulated mechanisms, fluids, and deformable
262
+ materials are not annotated. The mocap suit, gloves, headset, and markers are visible in the
263
+ recordings and may introduce dataset-specific visual cues.
 
264
 
265
  ## License
266
 
267
+ [ACE-Data-0 Research License Agreement](./LICENSE): non-commercial academic research only, no
268
+ redistribution, no re-identification. Read it in full before requesting access.
 
269
 
270
  ## Citation
271
 
 
 
272
  ```bibtex
273
  @article{cao2026acedata0,
274
  title = {ACE-Data-0: Human-Centric Ambient Capture as Embodied Data Engine},
 
281
  }
282
  ```
283
 
284
+ The arXiv identifier is a placeholder and will be replaced when the report is posted.
 
285
 
286
  ## Contact
287
 
288
+ Project updates on the [blog](https://ace-data-engine.github.io/ACE-Data-0/). Questions about
289
+ access, licensing, or annotations belong on the Community tab of this repository.