# uclouvain/openjpeg

Official repository of the OpenJPEG project

Repository: https://github.com/uclouvain/openjpeg
Canonical: https://ross.abutalabs.com/products/openjpeg
Language: C
License: NOASSERTION
License Family: other
Topics: openjpeg, c, jpeg2000, reference-implementation, reference
Last push: 2026-07-07T16:22:56+00:00

## Health v2 (maintenance only)
Score: 67/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 91, release rhythm 16, longevity 100
- inputs: {"age_days": 4217, "days_push": 57, "days_rel": 347, "gap_med": 285, "n_releases_24m": 2}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1108, forks 519 (observed 2026-08-28T04:03:37.007750+00:00)

## What it is
OpenJPEG is an open-source JPEG 2000 codec written in C, officially recognized by ISO/IEC and ITU-T as the JPEG 2000 reference software. It provides encoding/decoding libraries plus command-line codec applications and a JPIP client-server implementation.

## Use cases
- encode and decode jpeg 2000 images in c
- convert images to jp2 format
- embed a jpeg 2000 codec in an application
- process dicom or geospatial j2k imagery
- stream jpeg 2000 images over the web with jpip

## When to choose
- you need a standards-compliant, ISO-recognized JPEG 2000 implementation
- you want a lightweight C library with a permissive BSD license
- you need JPIP remote browsing support

## When to avoid
- you need actively maintained code with responsive issue triage - the repo is declared unmaintained
- you need JPEG (not JPEG 2000) support
- you prefer a high-level managed-language library without C bindings

## Facets
- artifact type: library
- maturity: maintenance
- function: image-processing, compression, sdk
- domain: image-processing, graphics, files
- platform: cross-platform, c, cpp
- tags: jpeg2000, codec, reference-implementation, bsd-license

## Member repositories
- uclouvain/openjpeg (main) score 67

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:37.007750+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 2026-08-30T06:44:00.018538+00:00, confidence not recorded.
  - readme: https://github.com/uclouvain/openjpeg (fetched 2026-08-28T04:03:37.007750+00:00, sha c11baa9b9220)
- Data as of 2026-08-30T08:39:29.467469+00:00.