Blocking artifacts reduction in block-based dual-tree complex wavelet transform

Takaaki Ishikawa, Hiroshi Watanabe, Yukihiro Bandoh, Seishi Takamura, Hirohisa Jozawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We propose a new method to reduce blocking artifacts in an encoded image by block-based Dual-Tree Complex Wavelet. In this paper, we describe a cause of blocking artifacts of the block-based approach and focus on a method for finding sparse representations from redundant complex coefficients. The proposed method offers minimal transform operation performing on the same resolution for an input image. Experimental results show that the proposed method reduces blocking artifacts that are observed along block boundaries and thus improves the visual quality.

Original languageEnglish
Title of host publicationISPACS 2009 - 2009 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings
Pages260-263
Number of pages4
DOIs
Publication statusPublished - 2009 Dec 1
Event2009 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2009 - Kanazawa, Japan
Duration: 2009 Dec 72009 Dec 9

Publication series

NameISPACS 2009 - 2009 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings

Conference

Conference2009 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2009
CountryJapan
CityKanazawa
Period09/12/709/12/9

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Signal Processing
  • Electrical and Electronic Engineering
  • Communication

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