DjVu: Document Image Compression
the ultimate in document image compression. Back in 1995, when
working on my thesis, I noticed how some types of color images could be
compressed many orders of magnitude more if the sharp edges like text
where compressed bitonally. Like many other people, I noted it as
a curiosity and then shoved it aside to continue my current research.
person, Yann Lecun, realized the significance of the observation.
DjVu was born thanks to the efforts of Leon Bottou, Yann LeCun, Patrick Haffner,
Paul Howard, and Yoshua Bengio, with some contributions from
Pascal Vincent, Patrice Simard, and Steven Pigeon. My
involvement with DjVu began in 1998 as lead developer, and continued
even after DjVu was sold by AT&T Labs to LizardTech Inc.
Today, I still provide consulting services to LizardTech Inc. in their
my ramblings, how about some interesting DjVu links:
- LizardTech Inc. -- The current
owners of DjVu. They offer a variety of commercial products
including compressors and free viewers.
- Java DjVu -- The open source
java version of DjVu. Features a free viewer, and applet.
- DjVuLibre -- The open source
version of DjVu. Features a free viewer, simple compressors, and
other open source tools. (Note: Leon Bottou maintains this
site. I am listed as lead developer only because I originally
registered the site on behalf of LizardTech Inc.)
- PlanetDjVu -- Hosted by Jim
Riles and Associates, an official reseller of DjVu products, including
many custom products. Featured is a discussion board about
DjVu and occasional news releases.
- opendjvu.webhost.ru -- Features
the DjVuReader, written by Dmitriy Gar'kaev. The most
sophisticated DjVu viewer available. Unfortunately, there is only
a Russian version.
- Foxtrot Technologies Inc.
-- Not much of a website, but it is
the only software consulting company with the lead developer for
DjVu. The most recent innovations include DjVuXML, and JavaDjVu
(a very small java applet which views DjVu including bookmarks,
annotations, and hyperlinks).