Adaptive postprocessors with DCT-based block classifications

Chung Bin Wu, Bin Da Liu, Jar Ferr Yang

研究成果: Article同行評審

15 引文 斯高帕斯(Scopus)


In this paper, an adaptive postprocessor figured with discrete cosine transform (DCT)-based block classification to effectively remove the so-called blocky effect from compressed video sequences is proposed. The proposed DCT-based detection algorithms for both intraframes and interframes require much lower computation complexity than the spatial-domain approaches. In order to preserve the edge information, the adaptive postprocessor is also designed with a DCT-based edge detection mechanism such that a one-dimensional median filter can be adaptively adjusted to match with the edge orientation. Simulation results show that the proposed DCT-based detection algorithms accurately classifies smooth, edge, or nonsmooth blocks to help the adaptive postprocessor to effectively remove the blocky effect and sharply preserve the edge information.

頁(從 - 到)365-375
期刊IEEE Transactions on Circuits and Systems for Video Technology
出版狀態Published - 2003 5月

All Science Journal Classification (ASJC) codes

  • 媒體技術
  • 電氣與電子工程


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