J2000: A JPEG-2000 Codec

Welcome to the home of the J2000 codec.

The J2000 codec was written in an effort to produce the cleanest and simplest implementation possible of the JPEG-2000 standard. We have put a particular emphasis on good architecture design and code simplicity, while at the same time providing an implementation as complete and efficient as possible. The source code for the codec is freely available for anyone to study or even for use in commercial programs. We hope that our open development process and our focus on clean, straightforward code will help make the J2000 codec become a reference implementation of the JPEG-2000 standard.

NEW: Please use the discussion board to post your questions and requests!

You can download the j2k tarball j2k.tgz (includes everything).

libj2k (in C): libj2k
Command line encoders and decoders (in C): pnmtoj2k, j2ktopnm, pgxtoj2k, j2ktopgx, tgatoj2k
Graphical PGX and J2K viewers (in C#): pgxview, j2kview
The sample codestreams are currently unavailable from this site and must be downloaded from the members section of www.jpeg.org.

If you want to test the JPEG-2000 encoder and decoder, please read the installation instructions.
There is also an overview of the modules that form the J2000 coder/decoder.

24/04/2003 Added Steve Williams' memory leak fixes.
05/02/2003 TGA->J2K convertor generously given by Steve Williams.
21/10/2002 The J2000 code has been ported to Plan9, thanks to Peter A Cejchan.

Checkout mmplayer.com for a preview of MMPlayer, a mobile media player for Palm handhelds!