Design of generalized filter banks with unequal-length and its application of image coding

Atsuhiko Saito, Toshichika Urushibara, Masaaki Ikehara

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In this paper, we present a design and implementation of the M-channel linear-phase filter banks with unequal-length and same center of symmetry. The filter banks are separated into paraunitary and biorthogonal case. We discuss both cases. A novel filter bank can be regarded as a special class of generalized lapped transform with arbitrary number of channels M. In image coding applications, long basis functions should be used to avoid the blocking artifacts in low-frequency bands, while short basis functions should be used to reduce the ringing artifacts in high-frequency bands. Having the same center of symmetry is suitable for progressive image coder [SPIHT]. Filter banks with such characteristics can be achieved structurally by taking acount of the lattice structure. Finally, several design and image coding examples are shown.

Original languageEnglish
Pages (from-to)1756-1764
Number of pages9
JournalIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
VolumeE87-A
Issue number7
Publication statusPublished - 2004 Jul

Fingerprint

Image Coding
Filter Banks
Filter banks
Image coding
Unequal
Point of symmetry
Frequency bands
Basis Functions
SPIHT
Lattice Structure
Low Frequency
Transform
Design
Arbitrary

Keywords

  • Filter banks
  • Image coding
  • Lapped transforms

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Hardware and Architecture
  • Information Systems

Cite this

Design of generalized filter banks with unequal-length and its application of image coding. / Saito, Atsuhiko; Urushibara, Toshichika; Ikehara, Masaaki.

In: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E87-A, No. 7, 07.2004, p. 1756-1764.

Research output: Contribution to journalArticle

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