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Recompression of Bitmaps in PDF using JBIG2 format

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14330%2F10%3A00049414" target="_blank" >RIV/00216224:14330/10:00049414 - isvavai.cz</a>

  • Result on the web

    <a href="http://nlp.fi.muni.cz/projekty/eudml/pdfRecompression/" target="_blank" >http://nlp.fi.muni.cz/projekty/eudml/pdfRecompression/</a>

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Recompression of Bitmaps in PDF using JBIG2 format

  • Original language description

    Software for automatization of lossy (re)compression of scanned bitmaps to standard JBIG2 with adaptive optimalization level of lossiness and compression. It can be used on any PDF files that contain bitonal images (e.g. created by scanning during digitization). On these types of files the space gained by recompression is often more than 50%. In addition, the quality of the rendered page is often better than before recompression, as character candidates used during recompression are averaged over all representants recognized (by OCR techniques) in given PDF. It has been applied on 30,000+ pages of http://dml.cz and has been also used in the EuDML project. The application has been described in the peer-reviewed publications like Sojka, P., Hatlapatka, R.: Document Engineering for a Digital Library: PDF recompression using JBIG2 and other optimization of PDF documents. In Proceedings of DocEng 2010 conference. ACM, 2010. p.3-12, ISBN 978-1-4503-0231-9

  • Czech name

  • Czech description

Classification

  • Type

    R - Software

  • CEP classification

    JC - Computer hardware and software

  • OECD FORD branch

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Others

  • Publication year

    2010

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Internal product ID

    PDFJbim 2010/1

  • Technical parameters

    Petr Sojka, FI MU Brno, Botanická 68a, 60200 Brno, CZ, tel. +420549496966

  • Economical parameters

    Výrazná úspora místa a přenosových kapacit PDF souborů (20-80%), což jen v projektech EuDML a DML-CZ činí úsporu desítek či stovek terabajtů dat a človekodnů či člověkoměsíců čekání na přenos zobrazovaných PDF..

  • Owner IČO

    00216224

  • Owner name

    Masarykova univerzita