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

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

doi:10.1109/ISPACS.2009.5383851

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

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

^*Corresponding author for this work

School of Fundamental Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	ISPACS 2009 - 2009 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings
Pages	260-263
Number of pages	4
DOIs	https://doi.org/10.1109/ISPACS.2009.5383851
Publication status	Published - 2009 Dec 1
Event	2009 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2009 - Kanazawa, Japan Duration: 2009 Dec 7 → 2009 Dec 9

Publication series

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

Conference

Conference	2009 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2009
Country/Territory	Japan
City	Kanazawa
Period	09/12/7 → 09/12/9

ASJC Scopus subject areas

Computer Networks and Communications
Signal Processing
Electrical and Electronic Engineering
Communication

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10.1109/ISPACS.2009.5383851

Cite this

Ishikawa, T., Watanabe, H., Bandoh, Y., Takamura, S., & Jozawa, H. (2009). Blocking artifacts reduction in block-based dual-tree complex wavelet transform. In ISPACS 2009 - 2009 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings (pp. 260-263). [5383851] (ISPACS 2009 - 2009 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings). https://doi.org/10.1109/ISPACS.2009.5383851

Blocking artifacts reduction in block-based dual-tree complex wavelet transform. / Ishikawa, Takaaki; Watanabe, Hiroshi; Bandoh, Yukihiro et al.

ISPACS 2009 - 2009 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings. 2009. p. 260-263 5383851 (ISPACS 2009 - 2009 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Ishikawa, T, Watanabe, H, Bandoh, Y, Takamura, S & Jozawa, H 2009, Blocking artifacts reduction in block-based dual-tree complex wavelet transform. in ISPACS 2009 - 2009 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings., 5383851, ISPACS 2009 - 2009 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings, pp. 260-263, 2009 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2009, Kanazawa, Japan, 09/12/7. https://doi.org/10.1109/ISPACS.2009.5383851

Ishikawa T, Watanabe H, Bandoh Y, Takamura S, Jozawa H. Blocking artifacts reduction in block-based dual-tree complex wavelet transform. In ISPACS 2009 - 2009 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings. 2009. p. 260-263. 5383851. (ISPACS 2009 - 2009 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings). doi: 10.1109/ISPACS.2009.5383851

Ishikawa, Takaaki ; Watanabe, Hiroshi ; Bandoh, Yukihiro et al. / Blocking artifacts reduction in block-based dual-tree complex wavelet transform. ISPACS 2009 - 2009 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings. 2009. pp. 260-263 (ISPACS 2009 - 2009 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings).

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

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