JBIG2 Encoder

This is a JBIG2 encoder which has been written by me and open sourced by my generous employer.

You can read the documentation

From the README:

Welcome, gentle reader.

This is an encoder for JBIG2:
www.jpeg.org/public/fcd14492.pdf

JBIG2 encodes bi-level (1 bpp) images using a number of clever tricks to get
better compression than G4. This encoder can:
   * Generate JBIG2 files, or fragments for embedding in PDFs
   * Generic region encoding
   * Perform symbol extraction, classification and text region coding
   * Perform refinement coding and,
   * Compress multipage documents

It uses the (Apache-ish licensed) Leptonica library:
  http://www.leptonica.com/

You'll need version 1.36.

KNOWN BUGS:

The refinement coding causes Acrobat to crash. It's not known if this is a bug
in Acrobat, though it may well be.

BUILDING:

First, read the file PATENTS in the same directory as this file.

Fetch leptonica from its website and build it. For this you will also
need the standard libtiff, libpng and libjpeg.

If leptonica was unpacked in ../leptonlib-1.36/ you should just be able to type
make. Otherwise, fix up the path at the beginning of the Makefile first.

USAGE:

See the jbig2enc.h header for the high level API, or the jbig2 program for an
example of usage. It's very short and most of it is taken up with argument
parsing.