# ju1ce/April-Tag-VR-FullBody-Tracker

Full-body tracking in VR using AprilTag markers.

Repository: https://github.com/ju1ce/April-Tag-VR-FullBody-Tracker
Canonical: https://ross.abutalabs.com/products/april-tag-vr-fullbody-tracker
Language: C++
License: MIT
License Family: permissive
Topics: vr, vrchat, tracker, tracking, steamvr, fbt, fullbodytracking
Last push: 2023-10-31T19:33:20+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 2139, "days_push": 1037, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1229, forks 55 (observed 2026-08-28T04:04:03.624501+00:00)

## What it is
A free open-source application that provides full-body tracking in VR using printed AprilTag fiducial markers tracked by a phone or PS Eye camera, feeding positions into SteamVR. It includes a GUI, calibration tools, and a SteamVR driver, offering a low-cost alternative to commercial trackers for VRChat and similar games.

## Use cases
- get full-body tracking in VRChat without buying trackers
- track hips and legs in VR using printed AprilTag markers and a phone camera
- replace Driver4VR with a free marker-based tracking solution
- set up cheap full-body tracking with cardboard markers and a PS Eye camera
- calibrate AprilTag trackers for SteamVR full-body tracking

## When to choose
- you want free full-body tracking using only a phone camera and printed markers
- you use VRChat and need hip plus two leg trackers
- you cannot afford commercial Vive trackers or slimeVR hardware

## When to avoid
- you need high-precision, low-latency tracking for competitive play
- you want a plug-and-play solution without camera setup and calibration
- your tracking environment has poor lighting or frequent marker occlusion

## Facets
- artifact type: application
- maturity: maintenance
- function: computer-vision, gui
- domain: computer-vision, gaming-tools, graphics
- platform: windows, cpp
- tags: vr, steamvr, fullbody-tracking, apriltag, vrchat, fiducial-markers, openvr-driver, driver, linux

## Member repositories
- ju1ce/April-Tag-VR-FullBody-Tracker (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:03.624501+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:15:06.826407+00:00, confidence not recorded.
  - readme: https://github.com/ju1ce/April-Tag-VR-FullBody-Tracker (fetched 2026-08-28T04:04:03.624501+00:00, sha cf29b6323b42)
- Data as of 2026-08-30T08:39:29.467469+00:00.