Median Filtering of Video Signals — A Powerful Alternative

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: SMPTE J
Volume: 100, No. 7, pp. 541–546
Abstract: This article describes a novel filtering technique to free video signals from interfering signals. In contrast to the procedures based on recursive or transversal digital filter structures, a nonlinear technique is introduced with the median filtering. Nonlinearities in the course of a signal-processing chain produce distortions, harmonic waves, aliasing, and other defects that seem to render the application of the median filtering of video signals unsuitable. A three-dimensional median filter utilizing the statical linkages of picture elements with regard to space and time is suitable for filtering a video signal without visible artifacts appearing in the picture. The median filter thereby eliminates almost all interferences in the video signal. Picture elements disturbed by noise are replaced by a nearby picture element that is less disturbed. The median filtering is also an effective procedure for such other statical disturbances as bit errors or dropouts. Even regular interference structures such as cross color and cross luminance can be suppressed by special design of the filter window.
Publication Date: 1991-07-01
DOI: 10.5594/J08966
ISSN: Print: 0036-1682
Link: https://doi.org/10.5594/J08966
Author(s): Gerhard WischermannBTS Broadcast Television Systems GmbH, Darmstadt, Germany
Copyright: © 1991 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

Huang T.S. , “Two-Dimensional Digital Signal Processing II,” Transforms and Median Fillers , Springer-Verlag , Berlin / Heidelberg / New York , 1981 . EXTERNAL
Wahl F.M. , Digitate Bildsignalverarbeitung , Springer-Verlag , Berlin / Heidelberg / New York / London / Paris / Tokyo / Hong Kong , 1989 . EXTERNAL
Haberacker P. , Digitate Bildverarbeitung Grundlagen und Anwendungen , 3. Auflage , Hanser Verlag . EXTERNAL
Pitas I. , “Nonlinear Order Statistic Filters for Image Filtering and Edge Detection,” Signal Processing , 10 : 395 – 413 , 1986 . EXTERNAL
Doyle T. Frencken P. , “Median Filtering of Television Images,” ICCE Digest of Technical Papers pp. 186 – 187 , 1986 . EXTERNAL
Hodgson R.M. Bailey D.G. Naylor N.J. Ng A.L.M. McNeill S.J. , “Properties, Implementations and Applications of Rank Filters,” Image and Vision Computing 3 : 3 – 14 , 1985 . EXTERNAL
Marendra P.M. , “A Separable Median Filter for Image Noise Smoothing,” IEEE Trans, on Pattern Analysis and Machine Intelligence , PAMI-3 : 20 – 29 , 1981 . EXTERNAL
Nodes T.A. Gallagher N.C. , “Median Filters: Some Modifications and Their Properties,” IEEE Trans, on Acoustics, Speech, and Signal Processing ASSP-30 : 1982 . EXTERNAL

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Gerhard Wischermann; Median Filtering of Video Signals — A Powerful Alternative, SMPTE Journal ( Volume: 100, Issue: 7, July 1991); SMPTE, 1991. Available at https://doi.org/10.5594/J08966

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Gerhard Wischermann; Median Filtering of Video Signals — A Powerful Alternative, SMPTE Journal ( Volume: 100, Issue: 7, July 1991); SMPTE, 1991. Available at https://doi.org/10.5594/J08966

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Gerhard Wischermann; Median Filtering of Video Signals — A Powerful Alternative, SMPTE Journal ( Volume: 100, Issue: 7, July 1991); SMPTE, 1991. Available at https://doi.org/10.5594/J08966

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<span class="citation">Gerhard Wischermann; <cite>Median Filtering of Video Signals — A Powerful Alternative</cite>, SMPTE Journal ( Volume: 100, Issue: 7, July 1991); SMPTE, 1991. Available at <a href="https://doi.org/10.5594/J08966" target="_blank" rel="noopener">https://doi.org/10.5594/J08966</a></span>

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Gerhard Wischermann; Median Filtering of Video Signals — A Powerful Alternative, SMPTE Journal ( Volume: 100, Issue: 7, July 1991); SMPTE, 1991
doi: 10.5594/J08966
url: https://doi.org/10.5594/J08966

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Gerhard Wischermann; <cite id="bib-10-5594-j08966">Median Filtering of Video Signals — A Powerful Alternative</cite>, SMPTE Journal ( Volume: 100, Issue: 7, July 1991); SMPTE, 1991
<span class="doi">10.5594/J08966</span>
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