Image Formats for Preservation and Access. A Report of the Technology Assessment Advisory Committee to the Commission on Preservation and Access.

Autor/in	Lesk, Michael
Institution	Commission on Preservation and Access, Washington, DC.
Titel	Image Formats for Preservation and Access. A Report of the Technology Assessment Advisory Committee to the Commission on Preservation and Access.
Quelle	(1990), (15 Seiten) PDF als Volltext kostenfreie Datei Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Monographie
Schlagwörter	Access to Information; Archives; Comparative Analysis; Computer Storage Devices; Information Storage; Library Materials; Magnetic Tapes; Microforms; Optical Data Disks; Paper (Material); Preservation + Suchen Sie Ihr Suchwort? Archivwesen; Archiv; Informationsspeicherung; Magnetband; Mikroform; Papier
Abstract	The rapid growth and distribution of scholarly research in the middle and late twentieth century, the limited supply of old books and other paper-based materials, and the deterioration of items printed on acidic paper since the mid-1800s have meant that many libraries lack suitable copies of printed sources that their users would like to read. For some time, libraries have converted books, journals, and newspapers to forms that are more stable, easier and cheaper to copy, and more compact. The most important such form has been microfilm, which is considered a safe, durable, and inexpensive preservation option. Digital imagery is now seen as a viable alternative that offers long-term promise, and is rapidly becoming more accessible to libraries. This report compares digital and microform imagery and emphasizes that making either kind of copy is preferable to leaving acidic paper to decay. Topics addressed include: (1) preservation alternatives, including chemical deacidification, microform, digital imagery, and ASCII (non-image); (2) storage considerations--i.e., magnetic disk, optical WORM (write-once-read-many) disk, digital videotape, digital audiotape, conventional magnetic tape, CD-ROM, magnetic-optical erasable disk, and digital paper; (3) conversion considerations; and (4) transmission considerations. It is concluded that, because microfilm to digital image conversion is going to be relatively straightforward, and the primary cost of either microfilming or digital scanning is in selecting the book, handling it, and turning the pages, librarians should use either method as they can manage, expecting to convert to digital form over the next decade. (SD)
Erfasst von	ERIC (Education Resources Information Center), Washington, DC