A generalized lapped transform with unequal length filters based on first-order linear-phase filter banks

Taichi Yoshida; Yuichi Tanaka; Masaaki Ikehara

doi:10.1109/ACSSC.2007.4487389

A generalized lapped transform with unequal length filters based on first-order linear-phase filter banks

Taichi Yoshida, Yuichi Tanaka, Masaaki Ikehara

Department of Electronics and Electrical Engineering

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

Abstract

In this paper, we propose design methods for biorthogonal linear-phase filter banks (BOLPFBs) which have unequal length filters in their synthesis banks or in their both (analysis and synthesis) banks based on first-order linear-phase filter banks (FOLPFBs). First, we indicate that the building blocks in FOLPFBs can be used as those in variable-order LPFBs (VOLPFBs). Second, we propose a VOLPFB which have unequal length filters in its synthesis bank (UVLPFB). Long highpass filters of a synthesis bank often generate the ringing artifacts. Ringing artifacts are a main disadvantage in image coding based on FOLPFBs. Since UVLPFBs have long lowpass filters and short highpass filters in their synthesis bank, they can reduce the ringing artifacts as well as approximate smooth regions well.

Original language	English
Title of host publication	Conference Record of the 41st Asilomar Conference on Signals, Systems and Computers, ACSSC
Pages	1083-1087
Number of pages	5
DOIs	https://doi.org/10.1109/ACSSC.2007.4487389
Publication status	Published - 2007 Dec 1
Event	41st Asilomar Conference on Signals, Systems and Computers, ACSSC - Pacific Grove, CA, United States Duration: 2007 Nov 4 → 2007 Nov 7

Publication series

Name	Conference Record - Asilomar Conference on Signals, Systems and Computers
ISSN (Print)	1058-6393

Other

Other	41st Asilomar Conference on Signals, Systems and Computers, ACSSC
Country/Territory	United States
City	Pacific Grove, CA
Period	07/11/4 → 07/11/7

Keywords

Biorthogonal filter banks
First-order linear-phase filter banks
Image coding
Unequal length filter banks

ASJC Scopus subject areas

Signal Processing
Computer Networks and Communications

Access to Document

10.1109/ACSSC.2007.4487389

Cite this

Yoshida, T., Tanaka, Y., & Ikehara, M. (2007). A generalized lapped transform with unequal length filters based on first-order linear-phase filter banks. In Conference Record of the 41st Asilomar Conference on Signals, Systems and Computers, ACSSC (pp. 1083-1087). [4487389] (Conference Record - Asilomar Conference on Signals, Systems and Computers). https://doi.org/10.1109/ACSSC.2007.4487389

A generalized lapped transform with unequal length filters based on first-order linear-phase filter banks. / Yoshida, Taichi; Tanaka, Yuichi; Ikehara, Masaaki.
Conference Record of the 41st Asilomar Conference on Signals, Systems and Computers, ACSSC. 2007. p. 1083-1087 4487389 (Conference Record - Asilomar Conference on Signals, Systems and Computers).

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

Yoshida, T, Tanaka, Y & Ikehara, M 2007, A generalized lapped transform with unequal length filters based on first-order linear-phase filter banks. in Conference Record of the 41st Asilomar Conference on Signals, Systems and Computers, ACSSC., 4487389, Conference Record - Asilomar Conference on Signals, Systems and Computers, pp. 1083-1087, 41st Asilomar Conference on Signals, Systems and Computers, ACSSC, Pacific Grove, CA, United States, 07/11/4. https://doi.org/10.1109/ACSSC.2007.4487389

Yoshida T, Tanaka Y, Ikehara M. A generalized lapped transform with unequal length filters based on first-order linear-phase filter banks. In Conference Record of the 41st Asilomar Conference on Signals, Systems and Computers, ACSSC. 2007. p. 1083-1087. 4487389. (Conference Record - Asilomar Conference on Signals, Systems and Computers). doi: 10.1109/ACSSC.2007.4487389

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AB - In this paper, we propose design methods for biorthogonal linear-phase filter banks (BOLPFBs) which have unequal length filters in their synthesis banks or in their both (analysis and synthesis) banks based on first-order linear-phase filter banks (FOLPFBs). First, we indicate that the building blocks in FOLPFBs can be used as those in variable-order LPFBs (VOLPFBs). Second, we propose a VOLPFB which have unequal length filters in its synthesis bank (UVLPFB). Long highpass filters of a synthesis bank often generate the ringing artifacts. Ringing artifacts are a main disadvantage in image coding based on FOLPFBs. Since UVLPFBs have long lowpass filters and short highpass filters in their synthesis bank, they can reduce the ringing artifacts as well as approximate smooth regions well.

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A generalized lapped transform with unequal length filters based on first-order linear-phase filter banks

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