{"adoption": {"forks": 421, "observed_at": "2026-08-28T04:07:31.960587+00:00", "stars": 2950}, "canonical_url": "https://ross.abutalabs.com/products/loftr", "card": {"archived": false, "artifact_type": "library", "description": "Code for \"LoFTR: Detector-Free Local Feature Matching with Transformers\", CVPR 2021, T-PAMI 2022", "domain": ["computer-vision", "image-processing", "machine-learning", "robotics"], "enriched": true, "function": ["computer-vision", "machine-learning", "deep-learning"], "health_score": 20, "homepage": "https://zju3dv.github.io/loftr/", "language": "Jupyter Notebook", "license": "Apache-2.0", "license_family": "permissive", "maturity": "stable", "member_repos": ["zju3dv/LoFTR"], "name": "zju3dv/LoFTR", "platform": ["python", "cross-platform"], "pushed_at": "2024-05-31T06:54:41+00:00", "repo": "zju3dv/LoFTR", "stars": 2950, "tags": ["feature-matching", "pose-estimation", "transformers", "3d-vision", "visual-localization", "image-correspondence", "pytorch", "gpu"], "topics": ["feature-matching", "pose-estimation", "3d-vision"], "urls": [], "use_cases": ["match features between two images with transformers", "estimate camera pose from image pairs", "find correspondences in low-texture images", "visual localization for slam or sfm pipelines", "run pretrained image matching model in python", "use loftr via kornia"], "what_it_is": "LoFTR is a detector-free local image feature matching method using Transformers, released with PyTorch inference and training code plus pretrained indoor/outdoor models. It produces semi-dense pixel-level matches between image pairs, excelling in low-texture, blurred, or repetitive regions.", "when_to_avoid": ["you need real-time matching on CPU or very low-latency edge devices", "you only need lightweight sparse keypoints for a production mobile app", "you want a maintained general-purpose vision toolkit rather than a focused matcher"], "when_to_choose": ["you need robust semi-dense matches where classic detectors like SIFT fail", "you want a research-grade, well-cited matcher with pretrained models", "you need image matching integrated into kornia or PyTorch workflows"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/loftr", "repo": "zju3dv/LoFTR", "role": "main", "score": 32}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:07:31.960587+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T07:32:43.313354+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "dc1731fa0972aee30f1e7b6cbc7e77e5441c2db01195717092f2fdf9556e39fa", "fetched_at": "2026-08-28T04:07:31.960587+00:00", "kind": "readme", "missing": false, "url": "https://github.com/zju3dv/LoFTR"}, {"content_hash": "f2057b499931458e2193d79f84ef4759a0409dca30f938406b914faa1a53b290", "fetched_at": "2026-08-29T09:47:53.577167+00:00", "kind": "homepage", "missing": false, "url": "https://zju3dv.github.io/loftr/"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:07:31.960587+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T07:32:43.313354+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "dc1731fa0972aee30f1e7b6cbc7e77e5441c2db01195717092f2fdf9556e39fa", "fetched_at": "2026-08-28T04:07:31.960587+00:00", "kind": "readme", "missing": false, "url": "https://github.com/zju3dv/LoFTR"}, {"content_hash": "f2057b499931458e2193d79f84ef4759a0409dca30f938406b914faa1a53b290", "fetched_at": "2026-08-29T09:47:53.577167+00:00", "kind": "homepage", "missing": false, "url": "https://zju3dv.github.io/loftr/"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T07:32:43.313354+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "dc1731fa0972aee30f1e7b6cbc7e77e5441c2db01195717092f2fdf9556e39fa", "fetched_at": "2026-08-28T04:07:31.960587+00:00", "kind": "readme", "missing": false, "url": "https://github.com/zju3dv/LoFTR"}, {"content_hash": "f2057b499931458e2193d79f84ef4759a0409dca30f938406b914faa1a53b290", "fetched_at": "2026-08-29T09:47:53.577167+00:00", "kind": "homepage", "missing": false, "url": "https://zju3dv.github.io/loftr/"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:07:31.960587+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:07:31.960587+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:07:31.960587+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T07:32:43.313354+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "dc1731fa0972aee30f1e7b6cbc7e77e5441c2db01195717092f2fdf9556e39fa", "fetched_at": "2026-08-28T04:07:31.960587+00:00", "kind": "readme", "missing": false, "url": "https://github.com/zju3dv/LoFTR"}, {"content_hash": "f2057b499931458e2193d79f84ef4759a0409dca30f938406b914faa1a53b290", "fetched_at": "2026-08-29T09:47:53.577167+00:00", "kind": "homepage", "missing": false, "url": "https://zju3dv.github.io/loftr/"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:07:31.960587+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:07:31.960587+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T07:32:43.313354+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "dc1731fa0972aee30f1e7b6cbc7e77e5441c2db01195717092f2fdf9556e39fa", "fetched_at": "2026-08-28T04:07:31.960587+00:00", "kind": "readme", "missing": false, "url": "https://github.com/zju3dv/LoFTR"}, {"content_hash": "f2057b499931458e2193d79f84ef4759a0409dca30f938406b914faa1a53b290", "fetched_at": "2026-08-29T09:47:53.577167+00:00", "kind": "homepage", "missing": false, "url": "https://zju3dv.github.io/loftr/"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:07:31.960587+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:07:31.960587+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:07:31.960587+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T07:32:43.313354+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "dc1731fa0972aee30f1e7b6cbc7e77e5441c2db01195717092f2fdf9556e39fa", "fetched_at": "2026-08-28T04:07:31.960587+00:00", "kind": "readme", "missing": false, "url": "https://github.com/zju3dv/LoFTR"}, {"content_hash": "f2057b499931458e2193d79f84ef4759a0409dca30f938406b914faa1a53b290", "fetched_at": "2026-08-29T09:47:53.577167+00:00", "kind": "homepage", "missing": false, "url": "https://zju3dv.github.io/loftr/"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:07:31.960587+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:07:31.960587+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T07:32:43.313354+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "dc1731fa0972aee30f1e7b6cbc7e77e5441c2db01195717092f2fdf9556e39fa", "fetched_at": "2026-08-28T04:07:31.960587+00:00", "kind": "readme", "missing": false, "url": "https://github.com/zju3dv/LoFTR"}, {"content_hash": "f2057b499931458e2193d79f84ef4759a0409dca30f938406b914faa1a53b290", "fetched_at": "2026-08-29T09:47:53.577167+00:00", "kind": "homepage", "missing": false, "url": "https://zju3dv.github.io/loftr/"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T07:32:43.313354+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "dc1731fa0972aee30f1e7b6cbc7e77e5441c2db01195717092f2fdf9556e39fa", "fetched_at": "2026-08-28T04:07:31.960587+00:00", "kind": "readme", "missing": false, "url": "https://github.com/zju3dv/LoFTR"}, {"content_hash": "f2057b499931458e2193d79f84ef4759a0409dca30f938406b914faa1a53b290", "fetched_at": "2026-08-29T09:47:53.577167+00:00", "kind": "homepage", "missing": false, "url": "https://zju3dv.github.io/loftr/"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T07:32:43.313354+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "dc1731fa0972aee30f1e7b6cbc7e77e5441c2db01195717092f2fdf9556e39fa", "fetched_at": "2026-08-28T04:07:31.960587+00:00", "kind": "readme", "missing": false, "url": "https://github.com/zju3dv/LoFTR"}, {"content_hash": "f2057b499931458e2193d79f84ef4759a0409dca30f938406b914faa1a53b290", "fetched_at": "2026-08-29T09:47:53.577167+00:00", "kind": "homepage", "missing": false, "url": "https://zju3dv.github.io/loftr/"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T07:32:43.313354+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "dc1731fa0972aee30f1e7b6cbc7e77e5441c2db01195717092f2fdf9556e39fa", "fetched_at": "2026-08-28T04:07:31.960587+00:00", "kind": "readme", "missing": false, "url": "https://github.com/zju3dv/LoFTR"}, {"content_hash": "f2057b499931458e2193d79f84ef4759a0409dca30f938406b914faa1a53b290", "fetched_at": "2026-08-29T09:47:53.577167+00:00", "kind": "homepage", "missing": false, "url": "https://zju3dv.github.io/loftr/"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 0, "longevity": 100, "rhythm": 35}, "computed_at": "2026-09-02T17:46:02.011165+00:00", "flags": ["no_releases"], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 2010, "days_push": 824, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 32, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}