A new approach for restoring block-transform coded images with estimation of correlation matrices

S.S.O. Choy, Yuk Hee Chan, W.C. Siu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic research


This paper presents a new restoration approach to reduce coding artifacts in block-transform image coding. Different from conventional restoration techniques, the proposed one is non-iterative and requires light computational cost, yet can reconstruct objectively and subjectively better images. This good performance is achieved because of the following advantages the proposed approach has: (i) efficient incorporation of the solution bound into restoration; and (ii) effective exploitation of local image properties and statistical knowledge about the quantizers used.
Original languageEnglish
Title of host publicationInternational Conference on Image Processing : proceedings : October 26-29, 1997, Santa Barbara, California
ISBN (Print)0818681837
Publication statusPublished - 1997
EventIEEE International Conference on Image Processing [ICIP] -
Duration: 1 Jan 1997 → …


ConferenceIEEE International Conference on Image Processing [ICIP]
Period1/01/97 → …


  • Block codes
  • Computational complexity
  • Correlation methods
  • Cost effectiveness
  • Image coding
  • Image compression
  • Image quality
  • Matrix algebra
  • Parameter estimation
  • Standards

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