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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]
Glass chart. A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens.
A method for protein quantitation on nitrocellulose coated glass slides uses near-IR fluorescent detection with quantum dots. Traditional porous nitrocellulose signal to noise is limited by auto-fluorescence of the nitrocellulose at the respective required wavelengths of excitation and emission for standard organic fluorescent detection probes.
Flying-spot scanners were used to scan both still print sides and motion picture film for both broadcast TV and later post-production use. Flying-spot slide scanners were used for Station identification picture and to turn Test film into test TV pictures. There would be a slide changer like on slide projectors to change the slide.
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 ...
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Using a flatbed scanner to scan items other than paper documents exceeds the original purpose of the scanner, so special care must be taken with the process. The bed of the scanner is typically made of glass, and care needs to be taken that the glass not be scratched or cracked when placing or removing items on the bed. Since the items to be ...
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