Internal Program Version: jbig2enc  0.30

This is an encoder for JBIG2.

JBIG2 encodes bi-level (1 bpp) images using a number of clever
tricks to get better compression than G4. Encoder capabilities:

* Generate JBIG2 files, or fragments for embedding in PDFs
* Generic region encoding
* Perform symbol extraction, classification and text region coding
* Perform refinement coding
* Compress multipage documents

https://github.com/agl/jbig2enc