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{
  "schema_version": "1.0.0",
  "name": "diffraction-egocentric-kitchen-sample",
  "type": "human_egocentric_observation",
  "release_status": "public_evaluation_sample",
  "license": "cc-by-4.0",
  "min_depth_confidence": 1,
  "coordinate_frame": "ARKit camera-to-world, metres, xyzw quaternion; OpenCV unprojection requires diag(1,-1,-1) camera-axis conversion",
  "pose_source": "device_vio_estimate",
  "robot_actions": "absent",
  "episodes": [
    {
      "capture_id": "onion-preparation",
      "instruction": "Prepare and peel the onion on the cutting board using hands and a kitchen knife.",
      "split": "sample",
      "session_group": "kitchen_capture_group_unverified",
      "video": "videos/onion-preparation.mp4",
      "preview": "previews/onion-preparation.mp4",
      "sensors": "sensors/onion-preparation.zip",
      "signals": {
        "quality": "annotations/onion-preparation/quality.parquet",
        "tracks_raw": "annotations/onion-preparation/tracks_raw.parquet",
        "tracks": "annotations/onion-preparation/tracks.parquet",
        "arkit_poses": "annotations/onion-preparation/arkit_poses.parquet",
        "frame_mapping": "annotations/onion-preparation/frame_mapping.parquet",
        "camera_intrinsics": "annotations/onion-preparation/camera_intrinsics.parquet",
        "device_imu": "annotations/onion-preparation/device_imu.parquet",
        "hand_pose_raw": "annotations/onion-preparation/hand_pose_raw.parquet",
        "hand_pose": "annotations/onion-preparation/hand_pose.parquet",
        "hand_world_trajectory": "annotations/onion-preparation/hand_world_trajectory.parquet",
        "contact": "annotations/onion-preparation/contact.parquet",
        "contact_events": "annotations/onion-preparation/contact_events.parquet"
      },
      "frame_count": 4543,
      "duration_s": 75.733333,
      "width": 1920,
      "height": 1440,
      "nominal_fps": 59.9868,
      "source_archive_sha256": "4a25f7c7080ee803ce6e9d4837ae2de68df296b37f60e37b43dce02ce04d87a4",
      "video_sha256": "7279f0d51cfc9ea5d01088aaa45a1777036da8300f0316462befad9a25bdbcab",
      "sensor_archive_sha256": "f3257b74551aed7ed90adffc7d2462a11234b984ad9d2b393c241420cb0520ca"
    },
    {
      "capture_id": "pepper-slicing",
      "instruction": "Prepare and slice the bell pepper on the cutting board using a kitchen knife.",
      "split": "sample",
      "session_group": "kitchen_capture_group_unverified",
      "video": "videos/pepper-slicing.mp4",
      "preview": "previews/pepper-slicing.mp4",
      "sensors": "sensors/pepper-slicing.zip",
      "signals": {
        "quality": "annotations/pepper-slicing/quality.parquet",
        "tracks_raw": "annotations/pepper-slicing/tracks_raw.parquet",
        "tracks": "annotations/pepper-slicing/tracks.parquet",
        "arkit_poses": "annotations/pepper-slicing/arkit_poses.parquet",
        "frame_mapping": "annotations/pepper-slicing/frame_mapping.parquet",
        "camera_intrinsics": "annotations/pepper-slicing/camera_intrinsics.parquet",
        "device_imu": "annotations/pepper-slicing/device_imu.parquet",
        "hand_pose_raw": "annotations/pepper-slicing/hand_pose_raw.parquet",
        "hand_pose": "annotations/pepper-slicing/hand_pose.parquet",
        "hand_world_trajectory": "annotations/pepper-slicing/hand_world_trajectory.parquet",
        "contact": "annotations/pepper-slicing/contact.parquet",
        "contact_events": "annotations/pepper-slicing/contact_events.parquet"
      },
      "frame_count": 3465,
      "duration_s": 57.75,
      "width": 1920,
      "height": 1440,
      "nominal_fps": 60.0,
      "source_archive_sha256": "166703cbbc48dea22dbde6b7ef461c51199f244bb5d86a60fce1449066d062b4",
      "video_sha256": "8a7efeadc9a2bd2cdac97c7f55df35ef6cb144b64c98d707251f5caae168f1da",
      "sensor_archive_sha256": "a6ad8727007b28c635c0626b0e250c34981e46ac681d2009b143ed5117b139bc"
    },
    {
      "capture_id": "pepper-dicing",
      "instruction": "Dice the bell pepper strips on the cutting board using a kitchen knife.",
      "split": "sample",
      "session_group": "kitchen_capture_group_unverified",
      "video": "videos/pepper-dicing.mp4",
      "preview": "previews/pepper-dicing.mp4",
      "sensors": "sensors/pepper-dicing.zip",
      "signals": {
        "quality": "annotations/pepper-dicing/quality.parquet",
        "tracks_raw": "annotations/pepper-dicing/tracks_raw.parquet",
        "tracks": "annotations/pepper-dicing/tracks.parquet",
        "arkit_poses": "annotations/pepper-dicing/arkit_poses.parquet",
        "frame_mapping": "annotations/pepper-dicing/frame_mapping.parquet",
        "camera_intrinsics": "annotations/pepper-dicing/camera_intrinsics.parquet",
        "device_imu": "annotations/pepper-dicing/device_imu.parquet",
        "hand_pose_raw": "annotations/pepper-dicing/hand_pose_raw.parquet",
        "hand_pose": "annotations/pepper-dicing/hand_pose.parquet",
        "hand_world_trajectory": "annotations/pepper-dicing/hand_world_trajectory.parquet",
        "contact": "annotations/pepper-dicing/contact.parquet",
        "contact_events": "annotations/pepper-dicing/contact_events.parquet"
      },
      "frame_count": 2062,
      "duration_s": 34.366667,
      "width": 1920,
      "height": 1440,
      "nominal_fps": 60.0,
      "source_archive_sha256": "fa7c7f295d02aab54901688f44d666283ba43f35a97a2b03c3ea7fe2351ce49b",
      "video_sha256": "e164e7b06fa2f73e41f87eba48f59ef9b808a9b99516a9a02e6cda3afcf7558b",
      "sensor_archive_sha256": "477b42ac2c8044dc3ecec64a9f86429cc379f3e6ab7ba1a0c7ad24f48db45fa5"
    }
  ],
  "overview": "media/sample-overview.jpg",
  "validation_report": "validation.json",
  "huggingface_repo_id": "diffracting/egocentric-kitchen-sample"
}