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Domain: djvu.com

Stories and comments across the archive that link to djvu.com.

Comments · 9

  1. DjVu is way better than PDF by Anonymous Coward · · Score: 0 · on Large-Scale Paper-To-Digital Conversion?
    DjVu is way better than PDF for scanned documents (see http://djvu.sf.net, http://www.djvuzone.org and http://www.djvu.com).


    The files are about 5 times smaller than with PDF for black and white 300dpi scans, and 10 or 20 times smaller for color scans (nothing even comes close to DjVu for high-res document scans).


    DjVu is open source (the decoders and viewers at least). There are open source compressors, but they are not very good for scanned docs. You are better off using the free conversion server (see http://any2djvu.djvuzone.org ), or the commercial app from LizardTech (there is a free download version).


    -- Anonycous Moward.

  2. DjVu is way better than PDF by Anonymous Coward · · Score: 0 · on Large-Scale Paper-To-Digital Conversion?
    DjVu is way better than PDF for scanned documents (see http://djvu.sf.net, http://www.djvuzone.org and http://www.djvu.com).


    The files are about 5 times smaller than with PDF for black and white 300dpi scans, and 10 or 20 times smaller for color scans (nothing even comes close to DjVu for high-res document scans).


    DjVu is open source (the decoders and viewers at least). There are open source compressors, but they are not very good for scanned docs. You are better off using the free conversion server (see http://any2djvu.djvuzone.org ), or the commercial app from LizardTech (there is a free download version).


    -- Anonycous Moward.

  3. Plug-in support / compatibility by dkh2 · · Score: 2, Insightful · on Ars Technica Reviews Mozilla

    My one complaint about Mozilla, and Netscape 6, the absolute dirth of useable plugins for popular things like Shockwave, Flash, and Quicktime. Additionally, there does not appear to be any effort being put forth to rectify this situation. This gives me little hope of ever seeing extensions for things like DjVu, a supremely excellent format for distributing scanned documents across the web. (Ya gotta appreciate a format that gives better reproduction than PDF at 20% to 30% of the file size.)

    Personally, I think that the broad use of Shockwave, Flash, and Quicktime warrant the ability of the browser to handle those formats natively. Don't write them into the browser kernel but, DO provide separate, replaceable, upgradeable extensions that ship with the browser distribution.

    Give Mozilla the ability to handle the most commonly used file formats and I'll be able to convert everybody I know over to it.

  4. Re:DjVu libre link by jkramar · · Score: 2, Informative · on Slashback: Alternatives, Ads, Apple

    For GNU/Linux, the link in the posting leads straight to a free software project DjVuLibre which handles the DjVu format (encoder, decoder, browser plugin, and standalone viewer). There doesn't seem to be a gimp plugin or any kind of editor. For Windows and Mac, LizardTech provides a browser plugin. I haven't seen it before either, but it seems to have potential.

  5. Looking for an alternative to PDF? try DjVu. by Anonymous Coward · · Score: 0 · on Sklyarov Indicted
    Looking for an alternative to PDF?

    Try DjVu. The files are smaller, and the reference library and the Unix netscape plug-in are GPLed.

    Product info at www.djvu.com, Technical info and demos at djvuzone.org, and source code at sourceforge.net/projects/djvu.

  6. use DjVu instead of PDF by Anonymous Coward · · Score: 1 · on From Paper To PDF?
    DjVu is a much better solution than PDF for paper->web conversion.

    The files are 4 to 8 times smaller than PDF for B&W documents. the DjVu plug-in is 10 times smaller and a whole lot faster than Acrobat Reader. It runs on Linux/Unix, Windoze and Mac.

    The DjVu compressor is free for non-commercial uses, and the decoder source code is available.

    Expervision's OCR software can read DjVu files. They even have an OCR toolkit for Linux.

    Although DjVu supports embedded searchable text, Expervision's engine cannot embed text into DjVu files, only produce a text file (or a number or other formats). For web-based search, you can use a simple CGI script to return the DjVu files that correspond to the text files that contain a match to the search string.

  7. Re:Fatpipe->PDF->OCR->TXT->HTML? by Anonymous Coward · · Score: 0 · on Read Einstein's FBI File

    or to DjVu?

  8. Re:Patent issue by Anonymous Coward · · Score: 0 · on Question gzip Maven Jean-loup Gailly
    There are several types of arithmetic coders, but no-one own a broad license on the concept of arithmetic coding.

    IBM, Lucent and Mitsubishi own patents that cover the QM-coder. IBM owns the MQ-coder, and AT&T owns the ZP-coder

    AT&T distributes bzz a Burrows-Wheeler based compressor that uses the ZP-coder. It beats bzip2 on standard benchmarks. It comes with a quasi-open-source license (like ksh) as part of the DjVu image compression library.

    That stuff can be found there.

    -- Anonycous Moward

  9. DjVu by AT&T by XNormal · · Score: 1 · on jpeg2000 Allows 200:1 Wavelet Compression

    Check out DjVu (pronounced deja-vu) by AT&T.

    It compresses a high resolution full color scan of a magazine page by 1:200. And I am talking about real-life performance here, not ideal cases.

    The trick is an algorithm which automatically separates text and line art from continuous tone images and compresses each one with a different algorithm. The continous tone algorithm is wavelet based, of course. This is mentioned in the JPEG2000 article as a possible future extension but DjVu has been doing it for almost two years now.

    They have a Netscape plugin for viewing this stuff and the compressor is free for noncommercial use. It supports linux and many other operating systems.

    There are many compression schemes better than JPEG being promoted by their inventors. I believe JPEG2000 will probably be the winner for a very simple reason - the name JPEG.


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