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The most common type of scanner used in offices and in the home is the flatbed scanner, where the document is placed on a glass window for scanning. A sheetfed scanner , which moves the page across an image sensor using a series of rollers, may be used to scan one document at a time or multiple, as in an automatic document feeder .
A microscopy slide scanner. Whole slide image quality comparison, with a slide scanned with a 20x objective and about 0.8 gigabytes (GB) in size to the left, and a 40x objective and approximately 1.2 GB in size to the right. Each image shows a red blood cell. Digital slides are created from glass slides using specialized scanning machines.
Digital slides can be retrieved from a storage system, and viewed on a computer screen, by running image management software on a standard web browser, and assessed in exactly the same way as on a microscope. [1] Digital slides can be used as an alternative to traditional viewing for the purpose of teleconsultation. [2]
Prior to recent advances in virtual microscopy, slides were commonly digitized by various forms of film scanner and image resolutions rarely exceeded 5000 dpi. Nowadays, it is possible to achieve more than 100,000 dpi and thus resolutions approaching that visible under the optical microscope .
1967 The Flying Spot Color Slide Scanner made, with two slides with manual changeover. 1975 The Model Mk III used a new system called jump scan Analog. 1977 The first Rank Cintel Flying Spot Scanner was introduced into North America by MPV, (Motion Picture Video Corporation, Toronto) and the first colorist and pan & scan operator was the then ...
A slide viewer is usually a small handheld device with a slot in which a slide can be inserted to see a magnified illuminated view of it. A slide viewer is an instrument for individual viewing. Some models have an automatic feeder for inserting multiple slides and some have a slot for a strip of film.
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