Cosine-modulated two-dimensional time-varying filter banks

Satoshi Imata, Masaaki Ikehara, Shin ichi Takahashi

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

Abstract

Two-dimensional (2-D) filter banks are widely used for analysis and synthesis systems applied to subband coding of image. Recent years, time-varying filter banks that vary the structure of them appropriately for a local property of signals have been studied to apply to the compression of data of image. In time-varying filter banks, each different part of signals is processed with different filter coefficients or different number of channels (a different sampling matrix). Those signals have to be perfectly reconstructed even across transition of the filter banks. In this paper, we consider time-varying systems of cosine-modulated 2-D filter banks for arbitrary sampling lattices. We show perfect reconstruction (PR) conditions for such time-varying filter banks that vary filter coefficients or a sampling matrix. Some applications are presented to show the effectiveness of this method.

Original languageEnglish
Title of host publicationIEEE Region 10 Annual International Conference, Proceedings/TENCON
PublisherIEEE
Pages828-833
Number of pages6
Volume2
Publication statusPublished - 1996
EventProceedings of the 1996 IEEE Region 10 TENCON - Digital Signal Processing Applications Conference. Part 2 (of 2) - Perth, Aust
Duration: 1996 Nov 261996 Nov 29

Other

OtherProceedings of the 1996 IEEE Region 10 TENCON - Digital Signal Processing Applications Conference. Part 2 (of 2)
CityPerth, Aust
Period96/11/2696/11/29

Fingerprint

Filter banks
Sampling
Time varying systems

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Imata, S., Ikehara, M., & Takahashi, S. I. (1996). Cosine-modulated two-dimensional time-varying filter banks. In IEEE Region 10 Annual International Conference, Proceedings/TENCON (Vol. 2, pp. 828-833). IEEE.

Cosine-modulated two-dimensional time-varying filter banks. / Imata, Satoshi; Ikehara, Masaaki; Takahashi, Shin ichi.

IEEE Region 10 Annual International Conference, Proceedings/TENCON. Vol. 2 IEEE, 1996. p. 828-833.

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

Imata, S, Ikehara, M & Takahashi, SI 1996, Cosine-modulated two-dimensional time-varying filter banks. in IEEE Region 10 Annual International Conference, Proceedings/TENCON. vol. 2, IEEE, pp. 828-833, Proceedings of the 1996 IEEE Region 10 TENCON - Digital Signal Processing Applications Conference. Part 2 (of 2), Perth, Aust, 96/11/26.
Imata S, Ikehara M, Takahashi SI. Cosine-modulated two-dimensional time-varying filter banks. In IEEE Region 10 Annual International Conference, Proceedings/TENCON. Vol. 2. IEEE. 1996. p. 828-833
Imata, Satoshi ; Ikehara, Masaaki ; Takahashi, Shin ichi. / Cosine-modulated two-dimensional time-varying filter banks. IEEE Region 10 Annual International Conference, Proceedings/TENCON. Vol. 2 IEEE, 1996. pp. 828-833
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