# snavely/bundler_sfm

Bundler Structure from Motion Toolkit

Repository: https://github.com/snavely/bundler_sfm
Canonical: https://ross.abutalabs.com/products/bundler_sfm
Language: C
License Family: other
Topics: structure-from-motion, computer-vision, bundle-adjustment, computer-vision-tools, 3d-reconstruction, 3d-vision
Last push: 2019-05-13T15:27:18+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4924, "days_push": 2669, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1578, forks 476 (observed 2026-08-28T04:05:06.646713+00:00)

## What it is
Bundler is a structure-from-motion (SfM) system that takes unordered image collections with features and matches and produces a 3D reconstruction of camera parameters and sparse scene geometry. It uses incremental reconstruction with sparse bundle adjustment and includes utilities like Bundle2PMVS for exporting to multi-view stereo systems.

## Use cases
- reconstruct 3D scene geometry from a set of photos
- estimate camera poses from unordered image collections
- run bundle adjustment on camera and point data
- convert SfM output to PMVS for dense multi-view stereo
- undistort images using estimated radial distortion parameters

## When to choose
- you need classic incremental SfM for unordered photo collections
- you want a research-grade bundle adjustment engine with PMVS export
- you are working on photogrammetry or 3D vision research and can build C/C++ tools

## When to avoid
- you need actively maintained software with recent fixes and support
- you want dense reconstruction out of the box without external tools
- you need a modern GPU-accelerated SfM pipeline like COLMAP

## Facets
- artifact type: application
- maturity: maintenance
- function: computer-vision, image-processing, math
- domain: computer-vision, graphics, photography
- platform: windows, cpp
- tags: structure-from-motion, bundle-adjustment, 3d-reconstruction, photogrammetry, sparse-reconstruction, linux

## Member repositories
- snavely/bundler_sfm (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:06.646713+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 2026-08-30T03:56:56.308264+00:00, confidence not recorded.
  - readme: https://github.com/snavely/bundler_sfm (fetched 2026-08-28T04:05:06.646713+00:00, sha d65ef2ce112e)
- Data as of 2026-08-30T08:39:29.467469+00:00.