發送短信 : Further properties and a fast realization of the iterative truncated arithmetic mean filter

  ______     ___     _    _      ___      _____   
 /_   _//   / _ \\  | \  / ||   / _ \\   / ____|| 
   | ||    / //\ \\ |  \/  ||  / //\ \\ / //---`' 
  _| ||   |  ___  ||| .  . || |  ___  ||\ \\___   
 /__//    |_||  |_|||_|\/|_|| |_||  |_|| \_____|| 
 `--`     `-`   `-` `-`  `-`  `-`   `-`   `----`