# justadudewhohacks/opencv4nodejs

Nodejs bindings to OpenCV 3 and OpenCV 4

Repository: https://github.com/justadudewhohacks/opencv4nodejs
Canonical: https://ross.abutalabs.com/products/opencv4nodejs
Language: C++
License: MIT
License Family: permissive
Topics: nodejs, opencv, face-detection, javascript, async, node, cv, typescript
Last push: 2023-04-18T20:32:54+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3300, "days_push": 1233, "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 5048, forks 826 (observed 2026-08-28T04:09:08.920198+00:00)

## What it is
Node.js bindings to the native OpenCV 3 and OpenCV 4 libraries, including OpenCV-contrib modules, with both synchronous and asynchronous APIs. It enables computer vision tasks like face detection and recognition directly from JavaScript/TypeScript.

## Use cases
- detect faces in images from nodejs
- run opencv in a javascript application
- build a face recognition app with node
- process images asynchronously in nodejs
- use opencv contrib modules from typescript
- computer vision in an electron app

## When to choose
- you need OpenCV functionality in a Node.js project with TypeScript typings
- you want async, non-blocking computer vision tasks in JavaScript
- you're building an Electron or NW.js app that needs OpenCV

## When to avoid
- you need an actively maintained library - this repo is explicitly unmaintained since 2022; use the @u4/opencv4nodejs fork instead
- you're starting a new project and can use Python or another first-class OpenCV binding
- you need the latest OpenCV 4.x features or security updates

## Facets
- artifact type: library
- maturity: abandoned
- function: image-processing, computer-vision, machine-learning
- domain: computer-vision, image-processing, developer-tools
- platform: cross-platform
- tags: opencv-bindings, face-detection, face-recognition, typescript, async-api, native-bindings, unmaintained, nodejs, docker

## Member repositories
- justadudewhohacks/opencv4nodejs (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:08.920198+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 2026-08-29T18:17:22.359725+00:00, confidence not recorded.
  - readme: https://github.com/justadudewhohacks/opencv4nodejs (fetched 2026-08-28T04:09:08.920198+00:00, sha 884fe3ac1fc7)
- Data as of 2026-08-30T08:39:29.467469+00:00.