# hku-mars/FAST-Calib

A Handy Extrinsic Calibration Tool for LiDAR-camera Systems.

Repository: https://github.com/hku-mars/FAST-Calib
Canonical: https://ross.abutalabs.com/products/fast-calib
Language: C++
License: GPL-2.0
License Family: copyleft
Last push: 2026-05-12T13:34:30+00:00

## Health v2 (maintenance only)
Score: 56/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 82, release rhythm 35, longevity 35
- inputs: {"age_days": 501, "days_push": 113, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1044, forks 163 (observed 2026-08-28T04:03:21.180103+00:00)

## What it is
FAST-Calib is a C++ tool for fast, target-based extrinsic calibration of LiDAR-camera systems, producing accurate results in about one second without initial extrinsic guesses. It supports both solid-state and mechanical LiDARs and integrates with ROS workflows.

## Use cases
- calibrate lidar to camera extrinsics
- calibrate a Mid360 Livox lidar with a camera
- extrinsic calibration for FAST-LIVO2 sensor suite
- multi-scene joint lidar-camera calibration
- calibrate Ouster or Livox Avia lidar with camera
- find rotation and translation between lidar and camera without initial guess

## When to choose
- you need fast, accurate extrinsic calibration of a LiDAR-camera rig
- you have no prior estimate of the extrinsic parameters
- you use solid-state LiDARs like Livox Mid360 or Avia
- you want a ROS-based calibration workflow with a printable calibration target

## When to avoid
- you need online/continuous calibration during motion rather than static scenes
- you need camera-only intrinsic calibration
- you cannot fabricate the required circular-hole calibration target
- you need a non-ROS or Windows-native tool

## Facets
- artifact type: application
- maturity: active
- function: computer-vision, image-processing, developer-tools
- domain: robotics, computer-vision, autonomous-vehicles
- platform: cpp
- tags: lidar-camera-calibration, extrinsic-calibration, ros, sensor-fusion, point-cloud, target-based-calibration, linux

## Member repositories
- hku-mars/FAST-Calib (main) score 56

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:21.180103+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 2026-08-30T07:02:13.579931+00:00, confidence not recorded.
  - readme: https://github.com/hku-mars/FAST-Calib (fetched 2026-08-28T04:03:21.180103+00:00, sha 794316ccb1dd)
- Data as of 2026-08-30T08:39:29.467469+00:00.