Science in China Series A: Mathematics

, Volume 42, Issue 4, pp 382–386 | Cite as

Convergence of the median filterings of sequences

  • Ye Wanzhou 
  • Zhou Xingwei 


Suppose thatx=|x(n)|n∈ℤ is a sequence of real numbers. For eachp∈ℕ,x p =|x p (n)|n∈ℤis the resulting sequence ofx throughp times median filterings with window 2k+1. It is proved that whenp→∞, bothx (2p) andx(2 p}-1) are convergent. Thus the problem of convergence of the median filters of infinite-length sequences is completely solved.


median filter non-linear filter recurrent sequence 


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Copyright information

© Science in China Press 1999

Authors and Affiliations

  • Ye Wanzhou 
    • 1
  • Zhou Xingwei 
    • 1
  1. 1.Mathematics SchoolNankai UniversityTianjinChina

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