Raster meaning

răstər
A scanning pattern of parallel lines that form the image projected on a cathode-ray tube of a television set or display screen.
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The pattern of illuminated horizontal scanning lines formed on a picture tube when no signal is being received.
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The horizontal lines (scan lines) displayed on a TV or computer monitor. This is the origin of the term "raster graphics," which is the major category that all bitmapped images and video frames fall into (GIF, JPEG, MPEG, etc.). See raster scan, raster display, analog video and bitmapped graphics.
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The pattern of uniformly spaced horizontal scan lines that cover the display space of a device, such as a computer monitor or television monitor.Within each line are pixels (picture elements) that can be illuminated individually.
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A scanning pattern of parallel lines that form the display of an image projected on a cathode-ray tube of a television set or display screen.
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A bitmap image, consisting of a grid of pixels, stored as a sequence of lines.
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Origin of raster

  • German from Latin rāstrum rake (from the resemblance of the parallel lines to a rake's path) rēd- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From German Raster, from Latin raster, from rastrum (“a rake"), from verb radere (“to scrape").

    From Wiktionary