• DocumentCode
    1480611
  • Title

    Median and mean filters produce similar shifts on curved boundaries

  • Author

    Davies, E.R.

  • Author_Institution
    Dept. of Phys. R. Holloway & Bedford New Coll., Egham, UK
  • Volume
    27
  • Issue
    10
  • fYear
    1991
  • fDate
    5/9/1991 12:00:00 AM
  • Firstpage
    826
  • Lastpage
    828
  • Abstract
    The author considers the shifts produced by median filters on curved boundaries and contours, and shows that mean and Gaussian filters produce similar but generally slightly smaller shifts, the cases of linear intensity variations and of step edges being somewhat different and at opposite extremes of a continuum. In all cases, the shifts are zero for straight edges and contours, and are proportional to the angle turned through within the filter neighbourhood.
  • Keywords
    filtering and prediction theory; interference suppression; noise; picture processing; Gaussian filters; contours; curved boundaries; linear intensity variations; mean filters; median filters; noise reduction; step edges;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:19910518
  • Filename
    74951
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1480611