Download - Digitization Programmes
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History
Digitization started in 1992-93 Routine production in 1996 Two national programmes:
Memoriae Mundi Series Bohemica (direct scanning – manuscripts, old printed books, maps, …)
Kramerius (preservation microfilming + digitization – acid paper materials esp. newspapers and other periodicals
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Coverage
Limited access to rare materialsEndangered by frequent useEndangered by deterioration of carriers,
corrosion of writing and printing materials, fading colours, etc.
Special case: brittle acid paper
Need to preserve through offering copies
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National programmes
Parts of the Public Information Services of Libraries programme
Grant system under the Ministry of Culture since 2000
Call for proposals, grant committees, the applicants can require up to 70% of cost
Open access + application of recommended standards
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Production
MMSB Yearly: ca. 110,000 pages
digitized
Altogether: 400,000 pages MSS 140,000 pages old prints Several hundreds of maps
3 devices for direct digitization (cameras and camera scanners)
Kramerius Yearly: up to 400,000 pages
digitized and up to 1,000,000 filmed
Altogether: Ca. 800,000 pages Sound recordings of
interviews
2 microfilm scanners
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Metadata framework
High readability Standard platform Enhanced communication
SGML and any applications thereof: TEI, Czech DOBM XML
These features enable: Direct access Indexing of metadata in
sophisticated access tools: ManuFreT (local) AiP SAFE (Internet)
Re-export into production formats and conversion into other formats
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Metadata framework
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Visual data
Stored in graphic formats for: preview (GIF, JPEG) access (JPEG, limited TIFF/G4) archival storage (JPEG, limited TIFF/G4)
Optimized for access production processing (optimal parameters for JPEG) access processing (on-the-fly DjVu conversion, DjVu) application of multiresolution formats (MrSID)
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Access data: user side
transfer:modem 56 kbit/s = 7 KB per 1 second
JPEG 2.1 MB = 300 seconds = 5 minutes DjVu 140 KB = 20 seconds
well-comparable quality decompression problems
standard, progressive, or successive displaymultiresolutional display
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Access data: provider side
acceptable quality for established purpose optimized resolution optimized lossy compression quality factors new methods
Mix Raster Content approach (image layers compressed separately and merged)
wavelet encoding scheme JBIG-similar encoding black-and-white scheme
Multiresolution approach (several resolution stored in one image file)
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MRC + waveletDCTlossless
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Reference digital archiveon-line
Fast disk arrays for access
Reference archive – preservation microfilm
Reference digital archive for off-line media (CD, mg. tapes)
Administration
Archiving of and access to reformatted documents
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Digital libraryhttp://www.cdh.nkp.cz
Catalogues http://www.memoria.czperiodicals
Virtual integratorinternationale.g. ECH:TOPICC,VICODI, European DigitalPeriodicals
User(s)
Grid CESNET2U3
U2
U1, U2, U3, …, Ux- data storage faciltities
U1