jbigkit 2.1 Lossless compression for bi-level high-resolution images
JBIG-KIT implements the JBIG1 data compression standard (ITU-T T.82 and ISO/IEC 11544:1993), designed for bi-level (one bit per pixel) images such as black-and-white scanned documents. It is widely used in fax products, printer firmware and drivers, document management systems, and imaging software.
This package provides a static C library of (de)compression functions and some simple command-line converters similar to those provided by netpbm.
Two JBIG1 variants are available. One (jbig.c
) implements nearly all options of the standard but has to keep the full uncompressed image in memory. The other (jbig85.c
) implements just the ITU-T T.85 profile, with memory management optimized for embedded and fax applications. It buffers only a few lines of the uncompressed image in memory and is able to stream images of initially unknown height.
- Website: https://www.cl.cam.ac.uk/~mgk25/jbigkit/
- License: ISC, GPL 2+
- Package source: image.scm
- Patches: snippet
- Builds: x86_64-linux, i686-linux