# fSpy

A cross platform app for quick and easy still image camera matching

Repository: https://github.com/stuffmatic/fSpy
Canonical: https://ross.abutalabs.com/products/fspy
Homepage: https://fspy.io
Language: TypeScript
License: GPL-3.0
License Family: copyleft
Topics: camera-calibration, 3d-graphics, blender, fspy
Last push: 2022-12-08T17:16:22+00:00
Link (homepage): https://fspy.io

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3001, "days_push": 1364, "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 2584, forks 242 (observed 2026-08-28T04:07:02.510436+00:00)

## What it is
fSpy is an open source, cross-platform desktop app for still image camera matching, computing camera parameters from a reference image. It includes an official Blender importer add-on that applies the computed parameters to a Blender camera.

## Use cases
- match a 3D camera to a still photo for compositing
- calibrate camera parameters from vanishing points in an image
- import camera parameters into Blender for photorealistic scene setup
- set up camera position, orientation, and field of view from a reference image
- use computed camera parameters in other 3D applications

## When to choose
- you need to composite 3D objects into a photograph in Blender
- you want a free, open-source alternative to manual camera calibration
- you need a standalone GUI tool rather than a script inside a 3D app

## When to avoid
- you need video or moving-image camera tracking rather than still images
- you need automated calibration without manually picking reference lines
- you require an actively developed tool with recent updates

## Facets
- artifact type: application
- maturity: maintenance
- function: computer-vision, image-processing, gui
- domain: graphics, photography
- platform: cross-platform, windows
- tags: camera-matching, camera-calibration, blender-addon, 3d-graphics, typescript, electron-app, desktop, electron, macos, linux

## Member repositories
- stuffmatic/fSpy (main) score 23
- stuffmatic/fSpy-Blender (plugin) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:02.510436+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 2026-08-30T02:22:28.600967+00:00, confidence not recorded.
  - readme: https://github.com/stuffmatic/fSpy (fetched 2026-08-28T04:07:02.510436+00:00, sha 2420f3b29e65)
  - homepage: https://fspy.io (fetched 2026-08-29T10:05:18.025869+00:00, sha 052f6cac55db)
- Data as of 2026-08-30T08:39:29.467469+00:00.