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Some scanners would offer swappable modules for the different microform types. The latest viewer/scanner can accept any microform (roll, fiche, opaque cards, fiche, or aperture cards). Software in an attached PC is then used to convert the raw capture into a standard image format for immediate or archival uses.
Document imaging systems can take many forms including microfilm, on demand printers, facsimile machines, copiers, multifunction printers, document scanners, computer output microfilm (COM) and archive writers. Document Imaging means the conversion of paper files (of any size or description) or microfilm / fiche to digital images.
Digital conversion method needs the analog video signal to be converted to digital data at the first step. A scan converter can be made in its basic structure using some high speed integrated circuits as a circuit board however there are some integrated circuits which perform this function plus other picture processing functions like scissoring ...
Alexander Murray and Richard Morse invented and patented the first analog color scanner at Eastman Kodak in 1937. Intended for color separation at printing presses, their machine was an analog drum scanner that imaged a color transparency mounted in the drum, with a light source placed underneath the film, and three photocells with red, green, and blue color filters reading each spot on the ...
Aperture cards can be converted to digital documents using scanning equipment and software. Scanning can allow for significant image cleanup and enhancement. Often, the digital image produced is better than the visual quality available prescan. [6]
Microform includes flat film, microfilm, aperture cards, microfiche, and ultra fiche. Using open reels or cassettes, microfilm is often used as a way to store many documents in a small space. It has become increasingly prevalent in the development of films, as well as storage of archived newspapers.