Design of a new DFT filter bank with modified sampling kernels and its application to arbitrary image scaling

J. Y. Kim, S. W. Nam

Research output: Contribution to journalArticle

Abstract

A new M-channel DFT filter bank with its analysis and synthesis parts being modified is proposed for arbitrary image scaling, whereby down/up sampling kernels are newly introduced along with a compactly supported sampling function of degree 2. In particular, while only an even number of channels is allowed in the conventional MDFT FB, arbitrary (even/odd) number of channels can be applied in the proposed approach. Furthermore, it is shown that images of arbitrary size can be obtained from an original image without changing the number of channels. Finally, simulation results demonstrate that high-quality images of arbitrary size can be achieved by the proposed approach.

Original languageEnglish
Pages (from-to)58-64
Number of pages7
JournalIEICE Electronics Express
Volume6
Issue number2
DOIs
StatePublished - 2009 Jan 25

Fingerprint

Design for testability
Filter banks
sampling
Sampling
filters
scaling
Discrete Fourier transforms
Image quality
synthesis
simulation

Keywords

  • Arbitrary scalability
  • Closed-form sampling kernel
  • Compactly supported sampling function (CSSF)
  • Modified DFT (MDFT) filter bank (FB)

Cite this

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Design of a new DFT filter bank with modified sampling kernels and its application to arbitrary image scaling. / Kim, J. Y.; Nam, S. W.

In: IEICE Electronics Express, Vol. 6, No. 2, 25.01.2009, p. 58-64.

Research output: Contribution to journalArticle

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