Digitization Programmes

National Library of the Czech RepublicAdolf Knoll adolf.knoll@nkp.cz

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

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

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

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

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

Metadata framework

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)

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

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)

MRC + waveletDCTlossless

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

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