A Generalized Coding Artifacts and Noise Removal Algorithm for Digitally Compressed Video Signals

  • Ling Shao
  • Hui Zhang
  • Yan Liu
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6523)

Abstract

A generalized coding artifact reduction algorithm is proposed for a variety of artifacts, including blocking artifact, ringing artifact and mosquito noise. This algorithm does not require grid position detection and any coding parameters. All the filtering is based on local content analysis. Basically, the algorithm attempts to apply mild low-pass filtering on more informative regions to preserve the sharpness of the object details, and to apply strong low-pass filtering on less informative regions to remove severe artifacts. The size and parameters of the low-pass filters are changed continuously based on the entropy of a local region.

Keywords

Coding artifacts removal noise reduction entropy analysis content adaptive filter 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Ling Shao
    • 1
  • Hui Zhang
    • 2
  • Yan Liu
    • 3
  1. 1.Department of Electronic & Electrical EngineeringThe University of SheffieldUK
  2. 2.Department of Computer Science and TechnologyUnited International CollegeChina
  3. 3.Department of ComputingHong Kong Polytechnic UniversityHong Kong

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