a form of television camera tube in which an electron image produced by a photoemitting surface is focused in the plane of an aperture and deflected past the aperture to achieve scanning.


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  • Image enhancement

    noun 1. a method of improving the definition of a video picture by a computer program, which reduces the lowest grey values to black and the highest to white: used for pictures from microscopes, surveillance cameras, and scanners

  • Image formats

    graphics, file format There are many formats used to store images in files. GIF, TIFF and JPEG are very common. Others are BIFF, bmp, Clear, FITS, IFF, NFF, OFF, PCX, PNG, TGA, XBM. Some of these are documented on-line at the following sites: The Graphics File Format Page ( The NCSA file formats archive ( […]

  • Image intensifier

    noun 1. any of various devices for amplifying the intensity of an optical image, sometimes used in conjunction with an image converter

  • Imagemaker

    [im-ij-mey-ker] /ˈɪm ɪdʒˌmeɪ kər/ noun 1. a person, as a publicist, who specializes in creating for companies, political candidates, etc. noun See image consultant

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