Voxel51/APAC-Egocentric-Stereo

APAC Egocentric Stereo → FiftyOne (Native Multimodal MCAP)

The labeled stereo release of humyn-labs/APAC-Egocentric-Stereo-Labeled, converted to native multimodal MCAP episodes.

Twelve people were filmed doing their jobs while wearing a head-mounted stereo rig. Each sequence runs about a minute and carries the rectified video from both eyes, a depth render, a hand and head tracking render, and a caption describing what the wearer is doing at every moment. The work spans industrial, hospitality, logistics and retail settings: an automotive garage, a construction site, an electronics factory, a restaurant, a kitchen, a bar, a shipment hub, a laundromat, a shopping mart, a clothes store and a book store.

Installation

pip install fiftyone

Usage

import fiftyone as fo
import fiftyone.utils.huggingface as fouh

dataset = fouh.load_from_hub(
    "Voxel51/APAC-Egocentric-Stereo",
    name="APAC-Egocentric-Stereo",
    persistent=True,
)
fo.launch_app(dataset)

The industrial workplaces:

view = dataset.match({"environment": "Industrial"})

What you get

Twelve episodes and 12.0 minutes of recording at 30 fps. Each episode carries:

• /stereo-camera, the rectified pair at 3840x1080 with 1920x1080 per eye, as foxglove.CompressedVideo
• /depth-map and /hand-tracking, both 1920x1080, as foxglove.CompressedVideo, on the same frame clock as the cameras
• /action and /action-caption, the verb, the object and the full caption for each segment, stamped where the segment opens
• /action.plot, the index of the segment currently running
• /instruction, the task description for the sequence

Across the whole set that comes to 248 captioned segments and 62 distinct verbs.

Episodes carry the fields sample_id, environment, scene, task_description, verbs, num_segments, num_frames, duration, fps, sbs_width, sbs_height, per_eye_width, depth_width and depth_height.

Notes on the conversion

The depth stream is a false-colour 8-bit render distributed as H.264 video. Its pixel values are a colormap. Nothing in the source carries per-pixel distance.

Hand and head tracking is an overlay drawn onto the camera frame, not a stream of joint coordinates.

Both eyes ride in one side-by-side stream. The source publishes the pair pre-rectified in a single file, and the halves are cut at per_eye_width.

All three streams are Annex-B H.264 without B-frames. The source stereo video is MPEG-4 Part 2, and the source depth and tracking videos are H.264 with B-frames, so each is re-encoded rather than carried through.

Segments tile each sequence end to end with no gaps. They run three seconds each, except the last in a sequence, which is whatever time remains. One sequence carries 17 segments rather than 21 because its clip runs 50.8 seconds rather than about 60.

The source's verb vocabulary is inconsistently cased, listing both Applying and applying. The verbs field is deduplicated case-insensitively. The /action messages carry the verb as written.

License & attribution

The source dataset is released by humyn labs under CC BY 4.0, and this conversion is distributed under the same license.

Changes from the source: conversion to the FiftyOne MCAP flavor, encoding of the action segments as message streams, and re-encoding of the video.

A monocular counterpart is published at humyn-labs/APAC-Egocentric-Monocular-Labeled.