Suppression of ringing artifacts with an adaptive shrinkage algorithm

Ngai Fong Law, Wan Chi Siu, Degan Feng

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

Abstract

A non-iterative wavelet-based algorithm was proposed to reduce the ringing artifacts associated with a lossy compressed image. The proposed algorithm is based on the fact that increases in magnitude of the quantized wavelet coefficients lead to decreases in visual smoothness. Thus a shrinkage algorithm is applied to maintain visual smoothness. The proposed algorithm is, however, adaptive in nature, in which the amount of shrinkage depends on edge strength, region activity and compression ratio. Experimental results have confirmed that the adaptive algorithm could suppress the ringing artifacts and improve visual smoothness, especially around edges where ringing is severe.
Original languageEnglish
Title of host publicationIEEE Pacific RIM Conference on Communications, Computers, and Signal Processing - Proceedings
PublisherIEEE
Pages181-184
Number of pages4
Publication statusPublished - 1 Dec 1999
EventProceedings of the 1999 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM'99) - Victoria, BC, United States
Duration: 22 Aug 199924 Aug 1999

Conference

ConferenceProceedings of the 1999 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM'99)
CountryUnited States
CityVictoria, BC
Period22/08/9924/08/99

ASJC Scopus subject areas

  • Signal Processing

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