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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 ...
The scanner scans the film frames into a file sequence (using high-end computer data storage devices), whose single file contains a digital scan of each still frame; the preferred image file format used as output are usually Cineon, DPX or TIFF, because they can store color information as raw data, preserving the optical characteristics of the ...
Digital imaging or digital image acquisition is the creation of a digital ... Many technical images—such as those acquired with tomographic equipment, side-scan ...
Dust and scratches on the film can be a big problem for scanning. Because of their reduced size (compared to prints), the scanners are capable of resolutions much higher than a regular flatbed scanner; typically at least 2000 samples per inch (spi), up to 4000 spi or more. At these resolutions dust and scratches take on gigantic proportions.
A digital scan back or scanning back is a type of digital camera back. Digital imaging devices typically use a matrix of light-sensitive photosensors , such as CCD or CMOS technologies. These sensors can be arranged in different ways, like a Bayer filter , where each row captures RGB components, or using one full-sized layer for each color ...
Document imaging is an information technology category for systems capable of replicating documents commonly used in business. 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.
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The first working fax machine, invented by the English physicist Frederick Bakewell in 1847, was in essence an early drum scanner. Instead of scanning a paper print or transparency using light, however, the revolving drum of Bakewell's machine is coated in tinfoil, with non-conductive ink painted on the foil and a stylus that scans across the drum and sends a pulse down a pair of wires when it ...
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