Algorithm and architecture for blocking artifact correction unconstrained by region types

J. Caviedes, C. Miro, A. Gesnot

Research output: Contribution to conferencePaper

9 Scopus citations

Abstract

Blocking artifacts are discontinuities visible on the MPEG grid edges. They are caused by coarse, independent quantization of the block DCT coefficients. Artifacts can be corrected by filtering image contents perpendicularly to the discontinuities (vertical and horizontal) if they are in uniform image regions that contain only low spatial frequencies. In this paper we present a new approach to blocking artifact correction algorithm. It uses three one-dimension DCTs, and one inverse DCT operation to correct all horizontal and vertical artifacts in an image. We call it the DCT frequency deblocking (DFD). DFD filters out artifact frequencies unconstrained by image region types, and is subject to maintaining best image quality with a minimum loss of energy. We also present a hardware architecture suitable for real-time execution of the algorithm.

Original languageEnglish (US)
Pages89-92
Number of pages4
StatePublished - Dec 1 2001
Externally publishedYes
EventProceedings of the 22nd Picture Coding Symposium: PCS-2001 - Seoul, Korea, Republic of
Duration: Apr 25 2001Apr 27 2001

Other

OtherProceedings of the 22nd Picture Coding Symposium: PCS-2001
CountryKorea, Republic of
CitySeoul
Period4/25/014/27/01

Keywords

  • Blocking artifact
  • DCT
  • Deblocking
  • MPEG artifact
  • Real-time MPEG post-processing

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Caviedes, J., Miro, C., & Gesnot, A. (2001). Algorithm and architecture for blocking artifact correction unconstrained by region types. 89-92. Paper presented at Proceedings of the 22nd Picture Coding Symposium: PCS-2001, Seoul, Korea, Republic of.