Generalized lapped biorthogonal transforms using lifting steps

M. Kawada, Masaaki Ikehara

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

Abstract

In this paper, a large class of lapped biorthogonal transforms using lifting steps(LLBT) is presented. The transform cofficients are parametarized as a basic matrix and a series of lifting steps, providing fast, efficient in-place computation of them. Our main motivation of the new transform is its application in image coding. The LLBT has several long overlapped basis functions of the synthesis bank for representing smooth signals to avoid annoying blocking artifacts. The bases of the synthesis bank covering high-frequency bands are constrained to be short to reduce ringing artifacts. Moreover, the analysis bandpass filters provide better stopband attenuation. Comparing to the popular 8×8 DCT,the LLBT only requires several more additions and shifting operations. However, image coding examples show that the LLBT is far superior to the DCT and 8×16 LOT in both objective and subjective coding performance.

Original languageEnglish
Title of host publicationConference Record of the Asilomar Conference on Signals, Systems and Computers
Pages197-201
Number of pages5
Volume1
Publication statusPublished - 2000
Event34th Asilomar Conference - Pacific Grove, CA, United States
Duration: 2000 Oct 292000 Nov 1

Other

Other34th Asilomar Conference
CountryUnited States
CityPacific Grove, CA
Period00/10/2900/11/1

Fingerprint

Image coding
Bandpass filters
Frequency bands

ASJC Scopus subject areas

  • Hardware and Architecture
  • Signal Processing
  • Electrical and Electronic Engineering

Cite this

Kawada, M., & Ikehara, M. (2000). Generalized lapped biorthogonal transforms using lifting steps. In Conference Record of the Asilomar Conference on Signals, Systems and Computers (Vol. 1, pp. 197-201)

Generalized lapped biorthogonal transforms using lifting steps. / Kawada, M.; Ikehara, Masaaki.

Conference Record of the Asilomar Conference on Signals, Systems and Computers. Vol. 1 2000. p. 197-201.

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

Kawada, M & Ikehara, M 2000, Generalized lapped biorthogonal transforms using lifting steps. in Conference Record of the Asilomar Conference on Signals, Systems and Computers. vol. 1, pp. 197-201, 34th Asilomar Conference, Pacific Grove, CA, United States, 00/10/29.
Kawada M, Ikehara M. Generalized lapped biorthogonal transforms using lifting steps. In Conference Record of the Asilomar Conference on Signals, Systems and Computers. Vol. 1. 2000. p. 197-201
Kawada, M. ; Ikehara, Masaaki. / Generalized lapped biorthogonal transforms using lifting steps. Conference Record of the Asilomar Conference on Signals, Systems and Computers. Vol. 1 2000. pp. 197-201
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