Examples of appropriate methods and formats are available on NARA’s Digitization Services Products and Services page īitonal (1-bit black and white) images must be scanned at 300-600 ppi. When converting analog or film based material (microfilm, microfiche, slides, etc.), agencies must digitize to standards appropriate for the accurate preservation of the original image. General requirements for scanned text include the following:Īgencies must digitize to standards appropriate for the accurate preservation of the information on the printed page. Scanned text is a photograph of a printed page produced either by a digital camera or scanner.
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