{"adoption": {"forks": 55, "observed_at": "2026-08-28T04:04:03.624501+00:00", "stars": 1229}, "canonical_url": "https://ross.abutalabs.com/products/april-tag-vr-fullbody-tracker", "card": {"archived": false, "artifact_type": "application", "description": "Full-body tracking in VR using AprilTag markers.", "domain": ["computer-vision", "gaming-tools", "graphics"], "enriched": true, "function": ["computer-vision", "gui"], "health_score": 20, "homepage": null, "language": "C++", "license": "MIT", "license_family": "permissive", "maturity": "maintenance", "member_repos": ["ju1ce/April-Tag-VR-FullBody-Tracker"], "name": "ju1ce/April-Tag-VR-FullBody-Tracker", "platform": ["windows", "cpp"], "pushed_at": "2023-10-31T19:33:20+00:00", "repo": "ju1ce/April-Tag-VR-FullBody-Tracker", "stars": 1229, "tags": ["vr", "steamvr", "fullbody-tracking", "apriltag", "vrchat", "fiducial-markers", "openvr-driver", "driver", "linux"], "topics": ["vr", "vrchat", "tracker", "tracking", "steamvr", "fbt", "fullbodytracking"], "urls": [], "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"], "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.", "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"], "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"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/april-tag-vr-fullbody-tracker", "repo": "ju1ce/April-Tag-VR-FullBody-Tracker", "role": "main", "score": 23}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:04:03.624501+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T06:15:06.826407+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "cf29b6323b42774c77b3b631434c7ca8cb482393ee73faf75226f0b09f1decf4", "fetched_at": "2026-08-28T04:04:03.624501+00:00", "kind": "readme", "missing": false, "url": "https://github.com/ju1ce/April-Tag-VR-FullBody-Tracker"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:04:03.624501+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T06:15:06.826407+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "cf29b6323b42774c77b3b631434c7ca8cb482393ee73faf75226f0b09f1decf4", "fetched_at": "2026-08-28T04:04:03.624501+00:00", "kind": "readme", "missing": false, "url": "https://github.com/ju1ce/April-Tag-VR-FullBody-Tracker"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T06:15:06.826407+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "cf29b6323b42774c77b3b631434c7ca8cb482393ee73faf75226f0b09f1decf4", "fetched_at": "2026-08-28T04:04:03.624501+00:00", "kind": "readme", "missing": false, "url": "https://github.com/ju1ce/April-Tag-VR-FullBody-Tracker"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:04:03.624501+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:04:03.624501+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:04:03.624501+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T06:15:06.826407+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "cf29b6323b42774c77b3b631434c7ca8cb482393ee73faf75226f0b09f1decf4", "fetched_at": "2026-08-28T04:04:03.624501+00:00", "kind": "readme", "missing": false, "url": "https://github.com/ju1ce/April-Tag-VR-FullBody-Tracker"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:04:03.624501+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:04:03.624501+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T06:15:06.826407+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "cf29b6323b42774c77b3b631434c7ca8cb482393ee73faf75226f0b09f1decf4", "fetched_at": "2026-08-28T04:04:03.624501+00:00", "kind": "readme", "missing": false, "url": "https://github.com/ju1ce/April-Tag-VR-FullBody-Tracker"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:04:03.624501+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:04:03.624501+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:04:03.624501+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T06:15:06.826407+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "cf29b6323b42774c77b3b631434c7ca8cb482393ee73faf75226f0b09f1decf4", "fetched_at": "2026-08-28T04:04:03.624501+00:00", "kind": "readme", "missing": false, "url": "https://github.com/ju1ce/April-Tag-VR-FullBody-Tracker"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:04:03.624501+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:04:03.624501+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T06:15:06.826407+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "cf29b6323b42774c77b3b631434c7ca8cb482393ee73faf75226f0b09f1decf4", "fetched_at": "2026-08-28T04:04:03.624501+00:00", "kind": "readme", "missing": false, "url": "https://github.com/ju1ce/April-Tag-VR-FullBody-Tracker"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T06:15:06.826407+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "cf29b6323b42774c77b3b631434c7ca8cb482393ee73faf75226f0b09f1decf4", "fetched_at": "2026-08-28T04:04:03.624501+00:00", "kind": "readme", "missing": false, "url": "https://github.com/ju1ce/April-Tag-VR-FullBody-Tracker"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T06:15:06.826407+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "cf29b6323b42774c77b3b631434c7ca8cb482393ee73faf75226f0b09f1decf4", "fetched_at": "2026-08-28T04:04:03.624501+00:00", "kind": "readme", "missing": false, "url": "https://github.com/ju1ce/April-Tag-VR-FullBody-Tracker"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T06:15:06.826407+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "cf29b6323b42774c77b3b631434c7ca8cb482393ee73faf75226f0b09f1decf4", "fetched_at": "2026-08-28T04:04:03.624501+00:00", "kind": "readme", "missing": false, "url": "https://github.com/ju1ce/April-Tag-VR-FullBody-Tracker"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 0, "longevity": 100, "rhythm": 8}, "computed_at": "2026-09-03T02:20:16.233290+00:00", "flags": [], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 2139, "days_push": 1037, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 23, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}