About: PDF Enhancements Tools for a Digital Library: pdfJbIm and pdfsign

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	This paper describes several innovative PDF document enhancements and tools that can be used when building a digital library. The main result presented in this paper is the PDF re-compression tool, developed using the jbig2enc encoder called pdfJbIm. This re-compression tool enables the size of the original bitonal PDFs to be, on average, halved. Some modifications to the jbig2enc encoder that increase the compression ratio even further are also described here. Together with another program, the pdfsizeopt.py by Péter Szabó, we have managed to decrease PDF storage size to such an extent that the transmission needs of a digital library were significantly reduced. We report the storage saving results that we have achieved on The Czech Digital Mathematics Library DML-CZ. We have downsized the PDF corpus to 43% of its original size. We also describe pdfsign tools for batch digital signature stamping of PDF documents. This paper describes several innovative PDF document enhancements and tools that can be used when building a digital library. The main result presented in this paper is the PDF re-compression tool, developed using the jbig2enc encoder called pdfJbIm. This re-compression tool enables the size of the original bitonal PDFs to be, on average, halved. Some modifications to the jbig2enc encoder that increase the compression ratio even further are also described here. Together with another program, the pdfsizeopt.py by Péter Szabó, we have managed to decrease PDF storage size to such an extent that the transmission needs of a digital library were significantly reduced. We report the storage saving results that we have achieved on The Czech Digital Mathematics Library DML-CZ. We have downsized the PDF corpus to 43% of its original size. We also describe pdfsign tools for batch digital signature stamping of PDF documents. (en)
Title	PDF Enhancements Tools for a Digital Library: pdfJbIm and pdfsign PDF Enhancements Tools for a Digital Library: pdfJbIm and pdfsign (en)
skos:prefLabel	PDF Enhancements Tools for a Digital Library: pdfJbIm and pdfsign PDF Enhancements Tools for a Digital Library: pdfJbIm and pdfsign (en)
skos:notation	RIV/00216224:14330/10:00040553!RIV11-MSM-14330___
http://linked.open...avai/riv/aktivita	P R
http://linked.open...avai/riv/aktivity	P(1ET200190513), P(LA09016), R
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Sojka, Petr Hatlapatka, Radim
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Masarykova univerzita / Fakulta informatiky
http://linked.open...dnocenehoVysledku	278340
http://linked.open...ai/riv/idVysledku	RIV/00216224:14330/10:00040553
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	jbig2enc; JBIG2; PDF size optimization; compression; DML; digital signature; JB2; DjVu; pdfJbIm; pdfsign; DML-CZ; EuDML (en)
http://linked.open.../riv/klicoveSlovo	compression JBIG2 PDF size optimization jbig2enc pdfJbIm DML DML-CZ EuDML digital signature DjVu JB2 pdfsign
http://linked.open...ontrolniKodProRIV	[005341FD7EBC]
http://linked.open...v/mistoKonaniAkce	Paris, France
http://linked.open...i/riv/mistoVydani	Brno, Czech Republic
http://linked.open...i/riv/nazevZdroje	DML 2010 Towards a Digital Mathematics Library
http://linked.open...in/vavai/riv/obor	JC
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	DML-CZ: Czech Digital Mathematical Library Czech Republic membership in the European Research Consortium for Informatics and Mathematics (ERCIM)
http://linked.open...UplatneniVysledku	2010
http://linked.open...iv/tvurceVysledku	Sojka, Petr Hatlapatka, Radim
http://linked.open...vavai/riv/typAkce	EUR - Evropská
http://linked.open.../riv/zahajeniAkce	2010-07-07 (xsd:date)
number of pages	11 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Masaryk University
https://schema.org/isbn	978-80-210-5242-0
http://localhost/t...ganizacniJednotka	14330
is http://linked.open...avai/riv/vysledek of	PDF Enhancements Tools for a Digital Library: pdfJbIm and pdfsign PDF Enhancements Tools for a Digital Library: pdfJbIm and pdfsign PDF Enhancements Tools for a Digital Library: pdfJbIm and pdfsign

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