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 for image processing
From The Free On-line Dictionary of Computing (30 December 2018) :

  image processing
      Computer manipulation of images.  Some of the
     many algorithms used in image processing include
     convolution (on which many others are based), FFT, DCT,
     thinning (or skeletonisation), edge detection and
     contrast enhancement.  These are usually implemented in
     software but may also use special purpose hardware for
     Image processing contrasts with computer graphics, which is
     usually more concerned with the generation of artificial
     images, and visualisation, which attempts to understand
     (real-world) data by displaying it as an artificial image
     (e.g. a graph).  Image processing is used in image
     recognition and computer vision.
     Silicon Graphics manufacture workstations which are often
     used for image processing.  There are a few programming
     languages designed for image processing, e.g. CELIP, VPL.
     See also Pilot European Image Processing Archive.
     Usenet newsgroup: news:sci.image.processing.
     [Other algorithms, languages?  FAQ?]

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